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Keyword: comet

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  • OSIRIS discovers balancing rock on 67P

    05/19/2015 4:24:15 PM PDT · by OK Sun · 17 replies
    Max Planck Institute ^ | May 18, 2015 | Max Planck Institute
    Scientists from Rosetta’s OSIRIS team have discovered an extraordinary formation on the larger lobe of comet 67P/Churyumov-Gerasimenko in the Aker region. From a group of three boulders the largest one with a diameter of approximately 30 meters stands out: images obtained on 16 September 2014 from a distance of 29 kilometers with the help of Rosetta’s scientific imaging system OSIRIS show it to perch on the rim of a small depression. There seems to be only a very small contact area with the nucleus. Similar geological formations are found also on Earth. So-called balancing rocks touch the underground with only...
  • Astronomy Picture of the Day -- Comet Churyumov Gerasimenko in Crescent

    04/29/2015 9:23:34 AM PDT · by SunkenCiv · 14 replies
    NASA ^ | April 29, 2015 | (see photo credit)
    Explanation: What's happening to Comet 67P/Churyumov-Gerasimenko? As the 3-km wide comet moves closer to the Sun, heat causes the nucleus to expel gas and dust. The Rosetta spacecraft arrived at the comet's craggily double nucleus last July and now is co-orbiting the Sun with the giant dark iceberg. Recent analysis of data beamed back to Earth from the robotic Rosetta spacecraft has shown that water being expelled by 67P has a significant difference with water on Earth, indicating that Earth's water could not have originated from ancient collisions with comets like 67P. Additionally, neither Rosetta nor its Philae lander detected...
  • (Prince) Madoc In America

    07/10/2003 5:56:52 PM PDT · by blam · 75 replies · 7,275+ views
    Madoc In AmericaNative American Histories in the USA Is truth stranger than fiction? Of course it is; it always has been One subject that has been debated for the last four hundred years was whether or not a Khumric-Welsh Prince called Madoc discovered America. Queen Elizabeth I was persuaded by her advisors that this was so and the Khumric-Welsh discovery was put forward as somehow giving England a prior claim in the political wrangles over first rights in the New World of the Americas. No one ever thought to investigate the British records. Caradoc of Llancarfan wrote about it circa...
  • Rosetta's comet is spinning down

    03/20/2015 1:27:12 PM PDT · by BenLurkin · 11 replies
    bbc ^ | Jonathan Amos
    "The gas jets coming out of the comet - they are acting like thrusters and are slowing down the comet," said flight director Andrea Accomazzo. The European Space Agency official was speaking this week at the Royal Aeronautical Society in London. He was describing how his team has learnt to fly Rosetta around the 10-billion-tonne, 4km-wide body with remarkable precision. Navigators use a system of landmarks on the comet to understand how it is rotating and moving through space. This information is fed into a model that helps plan a trajectory for the satellite. And it was while running this...
  • Telescope spots unusual comet 'never seen before' as it SURVIVES close encounter with the sun

    03/05/2015 6:47:38 AM PST · by EBH · 18 replies
    UK Daily Mail ^ | 2/25/2015 | Richard Gray
    An unusual comet that is unlike anything seen before by scientists is expected to become visible from Earth in the coming weeks. Nasa and the European Space Agency's Solar and Heliospheric Observatory, also called SOHO, spotted the comet as it skimmed past the sun. The is not thought to belong to any known family of comets and scientists have been left baffled as to how it survived its close encounter with the sun. Most comets that come that close do not survive the trip, according to solar scientists who study images beamed back by SOHO. Yet this comet managed to...
  • Dark Energy Camera Takes Accidental Gigantic, Magnificent Picture of Comet Lovejoy

    02/27/2015 11:32:31 AM PST · by BenLurkin · 13 replies
    universetoday.com ^ | Nancy Atkinson
    On December 27, 2014, while the Dark Energy Survey was scanning the southern sky, C2014 Q2 entered the camera’s view. Each of the rectangular shapes above represents one of the 62 individual fields of the camera. At the time this image was taken, the comet was passing about 82 million km (51 million miles) from Earth. That’s a short distance for the Dark Energy Camera, which is sensitive to light up to 8 billion light years away. The comet’s center is a ball of ice roughly 5 km (3 miles) across, and the visible head of the comet is a...
  • Astronomy Picture of the Day -- Long Lovejoy and Little Dumbbell

    02/27/2015 4:58:58 AM PST · by SunkenCiv · 2 replies
    NASA ^ | February 27, 2015 | (see photo credit)
    Explanation: Buffeted by the solar wind, Comet Lovejoy's crooked ion tail stretches over 3 degrees across this telescopic field of view, recorded on February 20. The starry background includes awesome bluish star Phi Persei below, and pretty planetary nebula M76 just above Lovejoy's long tail. Also known as the Little Dumbbell Nebula, after its brighter cousin M27 the Dumbbell Nebula, M76 is only a Full Moon's width away from the comet's greenish coma. Still shining in northern hemisphere skies, this Comet Lovejoy (C/2014 Q2) is outbound from the inner solar system some 10 light-minutes or 190 million kilometers from Earth....
  • Thunderbolts.info — Rosetta Mission Update | 67P's Mysterious Water Production

    02/21/2015 2:30:22 AM PST · by Swordmaker · 5 replies
    CLICK ON THE PICTURE FOR THE VIDEO REPORT: Video Report on the Electric Universe Explanation for the findings on 67P's Mysterious Water Production
  • Rosetta space probe takes sharp, close-up images of comet

    02/16/2015 8:09:47 AM PST · by Citizen Zed · 38 replies
    whdh / ap ^ | 2-16-2015
    The European Space Agency says high-resolution images the Rosetta space probe took during a swoop close to a comet it's been tracking for months show boulders on the comet's surface as well as "stunning details of the contrasting terrain." The agency said Monday the boulders ranged in size from a few meters (yards) to a few tens of meters, and lie "scattered across the whole surface of the comet." It says the sun was directly behind Rosetta as the pictures were taken, providing optimal light conditions.
  • Astronomy Picture of the Day -- Jets from Comet Churyumov-Gerasimenko

    02/03/2015 6:44:09 AM PST · by SunkenCiv · 6 replies
    NASA ^ | February 03, 2015 | (see photo credit)
    Explanation: Where do comet tails come from? Although it is common knowledge that comet tails and comas originate from comet nuclei, exactly how that happens is an active topic of research. One of the best images yet of emerging jets is shown in the featured image, taken last November by the robotic Rosetta spacecraft in orbit around the Comet 67P/Churyumov-Gerasimenko (Comet CG), and released last month. The overexposed picture shows plumes of gas and dust escaping numerous places from the Comet CG's nucleus as it nears the Sun and heats up. Although Comet CG is currently further out from the...
  • Latest Research Reveals a Bizarre and Vibrant Rosetta’s Comet

    01/24/2015 8:47:49 PM PST · by BenLurkin · 9 replies
    Despite its solid appearance, 67P is highly porous with a density similar to wood or cork and orbited by a cloud of approximately 100,000 “grains” of material larger than 2 inches (5 cm) across stranded there after the comet’s previous perihelion passage. ... Researchers have identified 19 distinct geological regions on the comet and five basic types of terrain: dust-covered, brittle material, large-scale depressions, smooth terrains and consolidated surfaces. ... Using a spectrometer to scan the comet’s surface researchers discovered complex organic (carbon-based) molecules that could include carboxylic acids – a component of amino acids. These organics only form in...
  • Cosmic Impacts May Have Seeded Early Earth with Ingredients for Life

    01/24/2015 6:09:58 PM PST · by Ernest_at_the_Beach · 38 replies
    space.com Astrobiology Magazine ^ | | January 20, 2015 03:37pm ET | By Charles Q. Choi, Astrobiology Magazine
    A picture of the gun used in the experiments. The big white box at the left end of the gun is where the target is stored. Credit: Impact Laboratory, University of Kent Bullets of ice shot at high speeds can deposit organic compounds on surfaces they strike. New findings suggest that comets might, indeed, have helped deliver key ingredients of life to Earth and perhaps elsewhere, researchers say. The scientists detailed their findings in the June 13 issue of the journal Astrobiology.Craters on the moon are evidence that the Inner Solar System was prone to giant impacts from asteroids...
  • There’s a Crack Forming on Rosetta’s 67P. Is it Breaking Up?

    01/24/2015 9:28:22 AM PST · by BenLurkin · 36 replies
    universetoday.com ^ | on January 24, 2015 | Tim Reyes
    The crack, or fissure, could spell the beginning of the end for comet 67P/Churyumov–Gerasimenko. It is located in the neck area, in the region named Hapi, between the two lobes that make 67P appear so much like a Rubber Duck from a distance. The fissure could represent a focal point of many properties and forces at work, such as the rotation rate and axis – basically head over heels of the comet. The fissure lies in the most active area at present, and possibly the most active area overall. Though the Hapi region appears to receive nearly constant sunlight, at...
  • See a Rare Comet-Moon Conjunction Tonight

    01/24/2015 9:21:38 AM PST · by BenLurkin · 14 replies
    universetoday.com ^ | January 23, 2015 | Bob King on
    Many of you already know about the triple shadow transit of Jupiter’s moons Io, Europa and Callisto. That’s scheduled for late tonight. Earlier, around nightfall, the crescent moon will lie 1° or less to the south-southwest of comet 15P/Finlay. No doubt lunar glare will hamper the view some, but what a fun opportunity to use the moon to find a comet. Finlay underwent a flare in brightness last week when it became easily visible in binoculars.
  • Strange Comet Discoveries Revealed by Rosetta Spacecraft

    01/23/2015 7:39:21 AM PST · by BenLurkin · 54 replies
    Space.com ^ | January 22, 2015 02:03pm ET | Miriam Kramer,
    Researchers working with Rosetta have found that the comet harbors organic compounds, carbon-based molecules that are sometimes known as the chemical building blocks of life. This marks the first time organic molecules have been detected on the surface of a comet's nucleus, according to Fabrizio Capaccioni, the principal investigator of the VIRTIS instrument on Rosetta. The northern hemisphere of the comet's nucleus is also filled with dunes and ripples that look somewhat like geological markings on Earth, Mars and Venus. Comet 67P/C-G doesn't have a robust atmosphere and high gravity like those planets, and yet it still has structures resembling...
  • Astronomy Picture of the Day -- Launch to Lovejoy

    01/22/2015 11:42:36 AM PST · by SunkenCiv · 4 replies
    NASA ^ | January 22, 2015 | (see photo credit)
    Explanation: Blasting skyward an Atlas V rocket carrying a U.S. Navy satellite pierces a cloud bank in this starry night scene captured on January 20. On its way to orbit from Space Launch Complex 41, Cape Canaveral Air Force Station, planet Earth, the rocket streaks past brightest star Sirius, as seen from a dark beach at Canaveral National Seashore. Above the alpha star of Canis Major, Orion the Hunter strikes a pose familiar to northern winter skygazers. Above Orion is the V-shaped Hyades star cluster, head of Taurus the Bull, and farther still above Taurus it's easy to spot the...
  • Astronomy Picture of the Day -- The Complex Ion Tail of Comet Lovejoy

    01/21/2015 2:52:55 AM PST · by SunkenCiv · 6 replies
    NASA ^ | January 21, 2015 | (see photo credit)
    Explanation: What causes the structure in Comet Lovejoy's tail? Comet C/2014 Q2 (Lovejoy), which is currently at naked-eye brightness and near its brightest, has been showing an exquisitely detailed ion tail. As the name implies, the ion tail is made of ionized gas -- gas energized by ultraviolet light from the Sun and pushed outward by the solar wind. The solar wind is quite structured and sculpted by the Sun's complex and ever changing magnetic field. The effect of the variable solar wind combined with different gas jets venting from the comet's nucleus accounts for the tail's complex structure. Following...
  • Astronomy Picture of the Day -- Comet Lovejoy's Tail

    01/17/2015 8:42:18 AM PST · by SunkenCiv · 7 replies
    NASA ^ | January 17, 2015 | (see photo credit)
    Explanation: Sweeping north in planet Earth's sky, Comet Lovejoy's greenish coma and blue tinted ion tail stretched across this field of stars in the constellation Taurus on January 13. The inset at the upper left shows the 1/2 degree angular size of the full moon for scale. So Lovejoy's coma appears only a little smaller (but much fainter) than a full moon on the sky, and its tail is visible for over 4 degrees across the frame. That corresponds to over 5 million kilometers at the comet's estimated distance of 75 million kilometers from Earth. Blown by the solar wind,...
  • Astronomers are Predicting at Least Two More Large Planets in the Solar System

    01/15/2015 3:45:27 PM PST · by BenLurkin · 77 replies
    universetoday.com ^ | on January 15, 2015 | Nancy Atkinson
    In their studies, the team analyzed the effects of what is called the ‘Kozai mechanism,’ which is related to the gravitational perturbation that a large body exerts on the orbit of another much smaller and further away object. They looked at how the highly eccentric comet 96P/Machholz1 is influenced by Jupiter (it will come near the orbit of Mercury in 2017, but it travels as much as 6 AU at aphelion) and it may “provide the key to explain the puzzling clustering of orbits around argument of perihelion close to 0° recently found for the population of ETNOs,” the team...
  • Comet Lovejoy (C/2014 Q2) Lights January Skies, Won’t Return for 8,000 Years

    01/06/2015 4:10:54 PM PST · by Jack Hydrazine · 33 replies
    Indian Country Today Media Network ^ | 6JAN2015 | ICTMN Staff Read more at http://indiancountrytodaymedianetwork.com/2015/01/06/comet-lovejoy-lights-j
    It’s being called the New Year’s Comet, a fuzzy green ball named Comet Lovejoy that is cruising past Mother Earth as we speak and is scheduled to become visible to the naked eye starting midweek. The name Comet Lovejoy may ring a bell; one of its namesakes was last in Earth’s vicinity three years ago, when it survived a death plunge into the sun in 2011, then emerged to grow a new tail. That was C/2011 W3 (Lovejoy). The latest entry into our field of vision is the fifth comet discovery for amateur astronomy Terry Lovejoy of Australia, according to...
  • Astronomy Picture of the Day -- This Comet Lovejoy

    12/25/2014 4:29:32 PM PST · by SunkenCiv · 20 replies
    NASA ^ | December 25, 2014 | (see photo credit)
    Explanation: Comet Lovejoy, C/2014 Q2, is framed like a cosmic Christmas tree with starry decorations in this colorful telescopic portrait, snapped on December 16th. Its lovely coma is tinted green by diatomic C2 gas fluorescing in sunlight. Discovered in August of this year, this Comet Lovejoy is currently sweeping north through the constellation Columba, heading for Lepus south of Orion and bright enough to offer good binocular views. Not its first time through the inner Solar System, this Comet Lovejoy will pass closest to planet Earth on January 7, while its perihelion (closest point to the Sun) will be on...
  • Astronomy Picture of the Day -- Comet Lovejoy over the Great Wall

    02/20/2014 3:29:47 PM PST · by SunkenCiv · 4 replies
    NASA ^ | February 20, 2014 | (see photo credit)
    Explanation: Fading now as it returns to the outer solar system Comet Lovejoy (C/2013 R1) still graces planet Earth's sky, a delicate apparition in binoculars or small telescopes. The comet, a relic of the solar system's formative years, is seen here rising in the morning twilight on January 12 among the stars of Ophiuchus, the Serpent Bearer. Posing near the comet is bright star Alpha Ophiuchi, also known as Rasalhague, from Arabic "the head of the serpent collector". Of course, the serpentine shape below is the ancient Great Wall of China, along the Panlongshan section northeast of Beijing. Panlongshan is...
  • Astronomy Picture of the Day -- Lovejoy in the New Year

    01/04/2014 12:44:17 AM PST · by SunkenCiv · 1 replies
    NASA ^ | January 03, 2014 | (see photo credit)
    Explanation: A rival to vanquished Comet ISON in 2013, Comet Lovejoy (C/2013 R1) still sweeps through early morning skies, captured in this starry scene on New Year's day. The frame stretches some 3.5 degrees (about 7 full moons) across a background of faint stars in the constellation Hercules. Only just visible to the naked eye from dark sites before dawn, Lovejoy remains a good target for the northern hemisphere's binocular equipped skygazers. But this deep exposure shows off Lovejoy's beautiful tails and tantalizing greenish coma better than binocular views. Not a sungrazer, this Comet Lovejoy made its closest approach to...
  • Astronomy Picture of the Day -- Comet Lovejoy Over a Windmill

    12/09/2013 5:28:01 PM PST · by SunkenCiv · 21 replies
    NASA ^ | December 09, 2013 | (see photo credit)
    Explanation: Lovejoy continues to be an impressive camera comet. Pictured above, Comet C/2013 R1 (Lovejoy) was imaged above the windmill in Saint-Michel-l'Observatoire in southern France with a six-second exposure. In the foreground is a field of lavender. Comet Lovejoy should remain available for photo opportunities for northern observers during much of December and during much of the night, although it will be fading as the month progresses and highest in the sky before sunrise. In person, the comet will be best viewed with binoculars. A giant dirty snowball, Comet Lovejoy last visited the inner Solar System about 7,000 years ago,...
  • Astronomy Picture of the Day -- Comet Lovejoy through Mörby Castle Ruins

    12/04/2013 8:11:38 PM PST · by SunkenCiv · 7 replies
    NASA ^ | December 04, 2013 | (see photo credit)
    Explanation: This new comet is quite photogenic. Comet Lovejoy, discovered only three months ago, was imaged through ruins of ancient Mörby Castle in Sweden last week sporting a green-glowing coma and tails trailing several degrees. The past few weeks have been an unusually active time for comet watchers as four comets were visible simultaneously with binoculars: ISON, Lovejoy, Encke, and LINEAR. C/2013 R1 (Lovejoy) comet is currently visible to the unaided eye from a dark location. As Monday's new Moon will provide little glare, the next few days provide a good time to see Comet Lovejoy as it reaches its...
  • Astronomy Picture of the Day -- Comet Lovejoy Before Galaxy M63

    12/02/2013 8:49:44 PM PST · by SunkenCiv · 2 replies
    NASA ^ | December 02, 2013 | (see photo credit)
    Explanation: Comet Lovejoy was captured last week passing well in front of spiral galaxy M63. Discovered only three months ago and currently near its maximum brightness, Comet Lovejoy can be seen near the Big Dipper from dark northerly locations before dawn with the unaided eye. An unexpected rival to Comet ISON, C/2013 R1 (Lovejoy), pictured above, is currently sporting a large green coma and a beautifully textured ion tail. Comet Lovejoy is now headed back to the outer Solar System but should remain a good sight in binoculars for another few weeks. Conversely, spiral galaxy M63, lies far in the...
  • Astronomy Picture of the Day -- Comet Lovejoy with M44

    11/09/2013 11:29:50 PM PST · by SunkenCiv · 1 replies
    NASA ^ | November 09, 2013 | (see photo credit)
    Explanation: While anxiously waiting for Comet ISON to brighten further as it falls toward the Sun, northern skygazers can also find three other bright comets in the east before dawn. In fact, Comet Lovejoy C/2013 R1 is currently the morning sky's brightest. Only discovered in September and not a sungrazing comet, this Comet Lovejoy is nearing the edge of naked-eye visibility and might be spotted from very dark sky sites. Sporting a greenish coma and tail in this telescopic view taken on November 7, Comet Lovejoy is about 0.5 AU from our fair planet and 1.2 AU from the Sun....
  • Video: Close Call in the Corona

    06/09/2013 11:10:06 AM PDT · by neverdem · 11 replies
    ScienceNOW ^ | 6 June 2013 | Sid Perkins
    Credit: Video courtesy of Cooper Downs Deep inside the sun's atmosphere, temperatures reach millions of degrees—so hot that even the best-shielded spacecraft can't go there (even at night). But natural objects that pass exceptionally close to the sun do provide scientists opportunities to directly probe the solar corona. Enter sun-grazing comets, such as comet Lovejoy, which whizzed within 140,000 kilometers of the sun's surface in mid-December 2011 (as seen in the first 20 seconds of the video). When a comet is far from the sun, its tail acts like a weather vane in the solar wind (the torrent of...
  • Astronomy Picture of the Day -- Little Planet Lovejoy

    01/10/2012 9:47:55 PM PST · by SunkenCiv · 5 replies · 1+ views
    NASA ^ | January 11, 2012 | (see photo credit)
    Explanation: Once a bright apparition in the southern hemisphere dawn Comet Lovejoy is fading, but its long tail still stretches across skies near the south celestial pole. Captured on the morning of December 30th, the comet appears near edge of this little planet as well. Of course, the little planet is actually planet Earth and the image was created from a 12 frame mosaic used to construct a spherical panorama. The type of stereographic projection used to map the image pixels is centered directly below the camera and is known as the little planet projection. Stars surrounding this little planet...
  • Astronomy Picture of the Day -- Comet Lovejoy and the ISS

    12/30/2011 9:36:05 PM PST · by SunkenCiv · 7 replies
    NASA ^ | December 31, 2011 | (see photo credit)
    Explanation: On December 24, Comet Lovejoy rose in dawn's twilight, arcing above the eastern horizon, its tails swept back by the solar wind and sunlight. Seen on the left is the comet's early morning appearance alongside the southern Milky Way from the town of Intendente Alvear, La Pampa province, Argentina. The short star trails include bright southern sky stars Alpha and Beta Centauri near the center of the frame, but the long bright streak that crosses the comet tails is a little closer to home. Waiting for the proper moment to start his exposure, the photographer has also caught the...
  • Astronomy Picture of the Day -- Comet Lovejoy over Paranal

    12/28/2011 2:28:24 PM PST · by SunkenCiv · 10 replies
    NASA ^ | December 28, 2011 | (see photo credit)
    Explanation: Comet Lovejoy (C/2011 W3) survived its close encounter with the Sun earlier this month, taking its place among wonders of the southern skies just in time for Christmas. Seen here before sunrise from Paranal Observatory in Chile, the sungrazing comet's tails stretch far above the eastern horizon. Spanning over 20 degrees they rise alongside the plane of the our Milky Way galaxy. A breathtaking spectacle in itself, Lovejoy performs on this celestial stage with southern stars and nebulae, including the Large and Small Magellanic clouds right of the telescope dome, and the glow of zodiacal light along the left...
  • Bright Comet Lovejoy Rings in the New Year! (Closest approach 7JAN2015)

    01/01/2015 7:01:59 PM PST · by Jack Hydrazine · 34 replies
    Slate.com ^ | 30DEC2014 | Phil Plait
    2014 hasn’t even ended yet and we already have one of the best comets of 2015 showing off in our skies: C/2014 Q2 (Lovejoy), already visible to the naked eye and predicted to get brighter over the next couple of weeks! This is the fifth comet discovered by Australian "amateur" astronomer Terry Lovejoy. In 2011, one of “his” comets made a spectacular pass through the sky. This one may not be quite so ostentatious, but its location and brightness make it a winner. On Jan. 7 it will pass about 70 million kilometers (44 million miles) from Earth, and it’s...
  • Astronomy Picture of the Day -- Comet Lovejoy before a Globular Star Cluster

    12/31/2014 11:47:49 AM PST · by SunkenCiv · 19 replies
    NASA ^ | December 31, 2014 | (see photo credit)
    Explanation: Comet Lovejoy has become visible to the unaided eye. To see the comet, just go outside an hour or so after sunset and look for a fuzzy patch to the right of Orion's belt. Binoculars and a star chart may help. Pictured here, Comet C/2014 Q2 (Lovejoy) was captured three days ago passing nearly in front of M79, the globular star cluster visible as the bright spot slightly above and to the left of the comet's green-hued coma. The nucleus of Comet Lovejoy is a giant dirty iceberg that is shedding gas into a long and intricate ion tail,...
  • Watch the New Year's Skies for a Green Comet

    12/30/2014 2:20:17 PM PST · by Red Badger · 20 replies
    National Geographic ^ | Published December 30, 2014 | Andrew Fazekas
    Comet Lovejoy is brightening faster than expected, putting on a show you can see for yourself this holiday season. Comet Lovejoy, snapped here through a telescope on December 16, is streaking through the night sky this holiday season. Just in time for the holidays, the skies are serving up a special cosmic gift: a brightening comet that may not have been in our part of the solar system for nearly 12,000 years. Discovered only this past August, comet Lovejoy (C/2014 Q2) is now quickly brightening to naked-eye visibility as it moves from the deep southern sky into prime viewing location...
  • Astronomy Picture of the Day -- The Cliffs of Comet Churyumov–Gerasimenko

    12/24/2014 5:24:51 AM PST · by SunkenCiv · 14 replies
    NASA ^ | December 23, 2014 | (see photo credit)
    Explanation: These high cliffs occur on the surface of a comet. They were discovered to be part of the dark nucleus of Comet Churyumov–Gerasimenko (CG) by Rosetta, a robotic spacecraft launched by ESA which began orbiting the comet in early August. The ragged cliffs, as featured here, were imaged by Rosetta about two weeks ago. Although towering about one kilometer high, the low surface gravity of Comet CG would likely make a jump from the cliffs, by a human, survivable. At the foot of the cliffs is relatively smooth terrain dotted with boulders as large as 20 meters across. Data...
  • The apocalyptic prophecies of Hildegard of Bingen, the next Doctor of the Church [Catholic Caucus]

    12/18/2011 10:50:36 PM PST · by Brian Kopp DPM · 28 replies
    summorumpontificum.net ^ | 12/19/2011 | Brian Kopp
    Monday, December 19, 2011 The apocalyptic prophecies of Hildegard of Bingen, the next Doctor of the ChurchBy Brian Kopp Earlier this fall, Pope Benedict XVI beatified Venerable Elena Aiello, bringing to light her little known prophecies, which have strong parallels to those of both Our Lady of Akita as well as statements Pope JPII and Cardinal Ratzinger made in the past regarding the Third Secret of Fatima. (See this earlier blog post for a summary of the parallels: For fourth anniversary of Summorum Pontificum, Pope draws attention to little known prophecies of Venerable Elena Aiello) Now, Pope Benedict XVI is...
  • A Stunning Look at the Cliffs of Comet 67P/Churyumov-Gerasimenko

    12/16/2014 3:18:00 PM PST · by BenLurkin · 21 replies
    universetoday.com ^ | on December 16, 2014 | Nancy Atkinson
    Images from space don’t get more dramatic than this. Image processing wizard Stuart Atkinson zoomed in on one of the most intriguing views yet of Comet 67P/Churyumov-Gerasimenko, highlighting the contrasts of dark and light, smooth and rugged, soft contours and frighteningly vertical cliffs.
  • We're Running Out of the Nuclear Fuel That Powers Space Travel

    12/02/2014 7:57:35 PM PST · by 2ndDivisionVet · 13 replies
    Gizmodo ^ | December 2, 2014 | Sarah Zhang
    Rosetta's lander lasted just 60 hours on a comet after it bounced into the dark shadows of a cliff, where its solar panels couldn't power the vehicle. Why didn't it carry a more reliable power source, say a nuclear battery like one that's unfailingly fueled Voyager for decades? It's a simple question with a fascinating answer, one that begins with the Cold War and ends with the future space exploration. When it comes to space travel, plutonium-238 is the perfect fuel: long-lasting and, as I'll explain later, relatively safe. Without it, we have no hope of going much further than...
  • Astronomy Picture of the Day -- 3D 67P

    11/29/2014 4:07:38 PM PST · by SunkenCiv · 9 replies
    NASA ^ | November 29, 2014 | (see photo credit)
    Explanation: Get out your red/blue glasses and float next to a comet! The Rosetta mission lander Philae's ROLIS camera snapped the two frames used to create this stereo anaglyph for 3D viewing during its November 12 descent to the nucleus of Comet 67P/Churyumov-Gerasimenko. The comet's curious double lobed nucleus is seen nearly end on from a distance of about 3 kilometers, about 1 hour before Philae arrived at the surface. Philae's initial landing site is near the center of the front facing lobe. Part of a landing gear foot cuts across the upper right corner, in the close foreground of...
  • Jet! Rosetta’s Comet Is Feeling The Heat As Gas and Dust Erupts From Surface

    As the European Space Agency scurries to find the final resting place of the Philae lander, Rosetta continues normal operations above the comet and will keep tracking it through 2015. Rosetta is the first orbiter to stick around near a comet, which will allow scientists an unprecedented chance to see a comet change from up close as the Sun’s heat and particles affect it. Could there be an atmosphere starting up? “At the bottom of the mosaic, the non-illuminated part of the comet stands out as a silhouette against the broader diffuse emission coming from the comet’s coma,” ESA stated....
  • No ‘Rubber Duckie’! Rosetta’s Comet Looks Weird In Decade-Old Hubble Model

    11/18/2014 10:14:06 AM PST · by BenLurkin · 7 replies
    universetoday.com ^ | on November 18, 2014 | Elizabeth Howell
    This Hubble Space Telescope model from 2003 shows us why. From afar, Comet 67P/Churyumov-Gerasimenko is a tiny object to image, even for the NASA probe’s powerful lens. Back then, the telescope was tasked with examining the comet to look at its size and shape to better design the Philae lander spacecraft. And the model reveals no duckie; it looks more like a sombrero from some angles. The main concern of scientists back then was redirecting Rosetta to a new target when its original comet (46P/Wirtanen) fell out of reach due to a launch delay. 67P was bigger and had a...
  • Philae Lander Early Science Results: Ice, Organic Molecules and Half a Foot of Dust

    11/18/2014 2:42:31 PM PST · by BenLurkin · 58 replies
    universetoday.com ^ | November 18, 2014 | Bob King
    With just 60 hours of battery power, the lander drilled, hammered and gathered science data on the surface of comet 67P/Churyumov-Gerasimenko before going into hibernation. Despite appearances, the comet’s hard as ice. The team responsible for the MUPUS (Multi-Purpose Sensors for Surface and Sub-Surface Science) instrument hammered a probe as hard as they could into 67P’s skin but only dug in a few millimeters: “Although the power of the hammer was gradually increased, we were not able to go deep into the surface,” said Tilman Spohn ... “If we compare the data with laboratory measurements, we think that the probe...
  • Alone and Confused, Philae Breaks our Hearts [laughably maudlin Millenials]

    11/16/2014 8:49:02 AM PST · by BenLurkin · 26 replies
    universetoday.com ^ | on November 16, 2014 | Morgan Rehnberg
    I was thirteen years old when Columbia disintegrated. Space exploration was not even a particular interest of mine at the time, but I remember exactly where I was when the news came. My dad and I were sitting in the living room of my childhood home, listening to NPR. I don’t really recall how I felt when they broke into our program with the news, but I remember well the two emotions that seemed to permeate the coverage that soon become constant: confusion and sadness. As I watched the almost surreal saga of ESA’s Philae this week, I found my...
  • Astronomy Picture of the Day -- Leonids Above Torre de la Guaita [1999]

    11/16/2014 3:33:42 AM PST · by SunkenCiv · 4 replies
    NASA ^ | November 16, 2014 | (see photo credit)
    Explanation: Leonids Meteor Shower came to an impressive crescendo in 1999. Observers in Europe saw a sharp peak in the number of meteors visible around 0210 UTC during the early morning hours of November 18. Meteor counts then exceeded 1000 per hour - the minimum needed to define a true meteor storm. At other times and from other locations around the world, observers typically reported respectable rates of between 30 and 100 meteors per hour. This photograph is a 20-minute exposure ending just before the main Leonids peak began. Visible are at least five Leonid meteors streaking high above the...
  • 5 Reasons “feminists” can’t complain about comet scientist’s “sexist” shirt

    11/15/2014 5:16:44 AM PST · by Perdogg · 38 replies
    Yesterday, mankind achieved something seriously amazing: we landed a space probe on a comet millions of miles away from Earth. Unfortunately for the scientists involved in this momentous accomplishment, modern day “feminists” exist. One of the scientists was wearing a shirt covered in sketches of of scantily clad women. Not actual photos of women, but sketched images of pin ups in skivvies. So this chick from The Atlantic does what “feminists” do when encountering the inane: she lost her damn mind. Naturally, this scientist’s wardrobe selection means women are not welcome to participate in scientific oriented fields…
  • Forget skunks. Comet 67P/Churyumov-Gerasimenko smells like of horse urine, vinegar, rotten eggs

    11/15/2014 1:28:14 AM PST · by Swordmaker · 30 replies
    Tech Times ^ | October 25, 2014 | By Rhodi Lee,
    ROSINA, the mass spectrometer aboard the Rosetta spacecraft gives scientists an idea how comet 67P/Churyumov-Gerasimenko smells like: it stinks. (Photo : ESA - C. Carreau/ATG medialab) Given its distance from the Earth, it seems far-fetched to have an idea what comet 67P/Churyumov-Gerasimenko, the target comet of the Rosetta mission, smells like. The Rosetta spacecraft of the European Space Agency has so far hinted scientists on how the comet looks like but it appears that the robotic space probe isn't just equipped to take images. It also has an instrument on board that can give scientists clues on what the comet...
  • Rosetta scientist Dr Matt Taylor apologises for ‘offensive’ shirt

    11/15/2014 1:56:04 AM PST · by Berlin_Freeper · 35 replies
    theguardian.com ^ | 14 November 2014 | James Meikle
    Dr Matt Taylor, the British scientist involved in the Rosetta mission, cries as he makes an apology for wearing an ‘offensive’ shirt.
  • Concerns over ESA’s Data Release Policy Amidst Rosetta Comet Landing

    11/14/2014 11:09:11 AM PST · by BenLurkin · 8 replies
    universetoday.com ^ | on November 14, 2014 | Matt Williams
    Unfortunately for millions of space enthusiasts around the world, none of these exciting images were released to the public. In addition, much of the images taken of the comet over the past few months as Rosetta closed in on it have similarly not been released. This has led to demands for more openness, which in turn has focused attention on ESA’s image and data release policy. Allowing scientists to withhold data for some period of time is not uncommon in planetary science. According to Jim Green, the director of NASA’s Planetary Science Division, a 6-month grace period is typical for...
  • Comet lander: Future of Philae probe 'uncertain'

    11/14/2014 9:43:11 AM PST · by Red Badger · 20 replies
    BBC ^ | 14 November 2014 Last updated at 08:39 ET | By Jonathan Amos Science correspondent, BBC News
    The Philae lander has attempted to drill into the surface of Comet 67P, amid fears that its battery may die within hours. The European Space Agency (Esa) says the instrument is being deployed to its maximum extent, despite the risk of toppling the lander. Scientists hope the tool will be able to capture some samples for analysis in the robot's onboard laboratories. If the battery dies, the results may not make it back to Earth. It is not known precisely where on the comet Philae is located, but the pictures it has returned indicate it is in the shadow of...
  • Rosetta: Battery will limit life of Philae comet lander (Houston, We Have NO Sunshine!!!)

    11/13/2014 4:56:14 PM PST · by NormsRevenge · 59 replies
    BBC News ^ | 11/13/14 | Jonathan Amos
    After a historic but awkward comet landing, the robot probe Philae is now stable and sending pictures - but there are concerns about its battery life. The lander bounced twice, initially about 1km back out into space, before settling in the shadow of a cliff, 1km from its intended target site. It may now be problematic to get enough sunlight to charge its battery systems. -- The key issue vexing controllers right now is the lighting conditions. Philae is receiving about 1.5 hours of illumination during every 12-hour rotation of the comet. This will be insufficient to top up its...