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Keyword: solarsystem

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  • Dramatic Polar Light Show On Saturn

    08/31/2018 2:25:58 AM PDT · by zeestephen
    Watts Up With That ^ | 30 August 2018 | Anthony Watts
    Astronomers using the Hubble Space telescope have taken a series of images featuring the fluttering auroras at the north pole of Saturn. The observations were taken in ultraviolet light and the resulting images provide astronomers with the most comprehensive picture so far of Saturn’s northern aurora...Because the atmosphere of each of the four outer planets in the Solar System is – unlike the Earth – dominated by hydrogen, Saturn’s auroras can only be seen in ultraviolet wavelengths
  • 'Cataclysmic' collision shaped Uranus' evolution

    07/03/2018 6:34:48 AM PDT · by Red Badger · 30 replies
    phys.org ^ | July 2, 2018 | Durham University
    The collision with Uranus of a massive object twice the size of Earth that caused the planet's unusual spin, from a high-resolution simulation using over ten million particles, coloured by their internal energy. Credit: Jacob Kegerreis/Durham University ___________________________________________________________________________ Uranus was hit by a massive object roughly twice the size of Earth that caused the planet to tilt and could explain its freezing temperatures, according to new research. Astronomers at Durham University, UK, led an international team of experts to investigate how Uranus came to be tilted on its side and what consequences a giant impact would have had on the...
  • This Extraterrestrial Stone Contains Compounds Not Found Anywhere Else in Our Solar System

    01/09/2018 9:03:11 PM PST · by BenLurkin · 30 replies
    sciencealert.com ^ | Jan 10, 2018 | Michelle Starr
    The Hypatia stone, as it is known, is not only extraterrestrial in origin. It contains micro-mineral compounds not known to occur anywhere on Earth, not found in any other meteorites, and not known to occur anywhere in the Solar System. It's a discovery that raises some questions about the formation of the Solar System. Subsequent analysis revealed that the diamond-filled stone was not from any known comet or meteorite - its combined features were unique among known extraterrestrial materials. One hypothesis proposed that it might be a fragment of comet nucleus, shocked on impact, and another found that it was...
  • Is There Still an Astronomy Ping List?

    06/22/2017 6:44:36 PM PDT · by originalbuckeye · 24 replies
    6/22/17 | Originalbuckeye
    Sorry for the Vanity, but I was on an Astronomy Ping List and haven't seen any pictures in a good, long while. Is it still active?
  • New 'large and bright' dwarf planet discovered in our solar system (unnamed,700 year solar orbit)

    07/13/2016 7:24:27 PM PDT · by NormsRevenge · 24 replies
    Yahoo News ^ | 7/11/16 | Fox News
    Using a telescope at the top of Mauna Kea, Hawaii, scientists have discovered a new dwarf planet in our solar system, a body about 435 miles across that lacks a name and that researchers still know little about. The new dwarf planet, dubbed 2015 RR245, has such a huge, highly elliptical orbit that it takes an astonishing 700 Earth years to complete one trip around the sun, and it ventures over 120 times further away from the sun than our planet does. "The icy worlds beyond Neptune trace how the giant planets formed and then moved out from the Sun....
  • Astronomy Picture of the Day -- Galaxy and Planets Beyond Bristlecone Pines

    06/19/2016 6:48:50 AM PDT · by SunkenCiv · 9 replies
    NASA ^ | Sunday, June 19, 2016 | (see photo credit)
    Explanation: What's older than these ancient trees? Nobody you know -- but almost everything in the background of this picture. The trees are impressively old -- each part of the Ancient Bristlecone Pine Forest located in eastern California, USA. There, many of the oldest trees known are located, some dating as far back as about 5,000 years. Seemingly attached to tree branches, but actually much farther in the distance, are the bright orbs of Saturn (left) and Mars. These planets formed along with the Earth and the early Solar System much earlier -- about 4.5 billion years ago. Swooping down...
  • Planet Nine's profile fleshed out

    04/09/2016 7:29:13 PM PDT · by JimSEA · 52 replies
    BBC ^ | 4/8/2916 | Paul Rincon
    In January, researchers at Caltech in the US suggested a large, additional planet might be lurking in the icy outer reaches of the Solar System. Now, a team at the University of Bern in Switzerland has worked out what they say are upper and lower limits on how big, bright and cold it might be. The study has been accepted by the journal Astronomy and Astrophysics. Prof Mike Brown and Dr Konstantin Batygin made their case for the existence of a ninth planet in our Solar System orbiting far beyond even the dwarf world Pluto. There are no direct observations...
  • Researchers find evidence of a real ninth planet

    01/20/2016 7:52:49 PM PST · by Utilizer · 31 replies
    Phys.org ^ | January 20, 2016 | Kimm Fesenmaier
    Caltech researchers have found evidence of a giant planet tracing a bizarre, highly elongated orbit in the outer solar system. The object, which the researchers have nicknamed Planet Nine, has a mass about 10 times that of Earth and orbits about 20 times farther from the sun on average than does Neptune (which orbits the sun at an average distance of 2.8 billion miles). In fact, it would take this new planet between 10,000 and 20,000 years to make just one full orbit around the sun. The researchers, Konstantin Batygin and Mike Brown, discovered the planet's existence through mathematical modeling...
  • Astronomy Picture of the Day -- To Scale: The Solar System

    12/25/2015 7:21:35 AM PST · by SunkenCiv · 19 replies
    NASA ^ | December 25, 2015 | (see photo credit)
    Explanation: Want to build a scale model Solar System? A blue marble 1.4 centimeters (about half an inch) across would be a good choice for a scale model Earth. Since the Sun is 109 times the diameter of Earth, a 1.5 meter diameter balloon could represent the Sun. But the distance between the Earth and Sun, 150 million kilometers, would translate to just under 180 meters (590 feet) at the same scale. That would mean the completed project, including the orbits of the outer planets, is probably not going to fit in your backyard. Still, you might find enough room...
  • Astronomy Picture of the Day -- A Gegenschein Lunar Eclipse

    11/14/2015 12:50:55 AM PST · by SunkenCiv · 6 replies
    NASA ^ | November 14, 2015 | (see photo credit)
    Explanation: Is there anything interesting to see in the direction opposite the Sun? One night last month, there were quite a few things. First, the red-glowing orb on the lower right of the featured image is the full moon, darkened and reddened because it has entered Earth's shadow. Beyond Earth's cone of darkness are backscattering dust particles orbiting the Sun that standout with a diffuse glow called the gegenschein, visible as a faint band rising from the central horizon and passing behind the Moon. A nearly horizontal stripe of green airglow is also discernable just above the horizon, partly blocked...
  • Why Earth is so much bigger than Mars: Rocky planets formed from 'pebbles'

    10/27/2015 11:47:58 AM PDT · by JimSEA · 9 replies
    Science Daily ^ | 10/27/2015 | Southwest Research Institute
    Using a new process in planetary formation modeling, where planets grow from tiny bodies called "pebbles," Southwest Research Institute scientists can explain why Mars is so much smaller than Earth. This same process also explains the rapid formation of the gas giants Jupiter and Saturn, as reported earlier this year. "This numerical simulation actually reproduces the structure of the inner solar system, with Earth, Venus, and a smaller Mars," said Hal Levison, an Institute scientist at the SwRI Planetary Science Directorate. He is the first author of a new paper published in the Proceedings of the National Academy of Sciences...
  • New NASA images show Pluto’s moon Charon in stunning detail

    10/03/2015 7:42:02 PM PDT · by ETL · 64 replies
    FoxNews.com - Science ^ | October 03, 2015
    NASA’s New Horizons spacecraft has sent incredible images of Pluto’s largest moon Charon back to Earth. The latest images reveal the moon’s complex and violent history, according to NASA. “Many New Horizons scientists expected Charon to be a monotonous, crater-battered world; instead, they’re finding a landscape covered with mountains, canyons, landslides, surface-color variations and more,” explained the space agency, in a statement. The high-resolution images, which were taken on July 14 and transmitted to Earth on Sept. 21, reveal a belt of fractures and canyons just north of the moon’s equator. Four times as long as the Grand Canyon, and...
  • Is there a Planet X, a ‘massive perturber,’ hidden beyond Pluto?

    09/05/2015 7:46:28 PM PDT · by BenLurkin · 32 replies
    Washington Post ^ | September 3 | Joel Achenbach
    The paper ... noted that a number of large, very remote objects share a similar orbital angle. That's suspicious if you're an astronomer expecting to see a random distribution of objects. The key orbital feature is known, rather obtusely, as the “argument of perihelion.” We're not shy of complicated orbital concepts (we try to toss around the phrase "obliquity of the ecliptic" whenever possible), but this one is not very easy to explain. "The argument of perihelion is the angle at which an object comes to perihelion with respect to the ecliptic plane," Sheppard said in an e-mail. Mike Brown,...
  • Face the facts people, there is no life on Mars

    07/31/2015 11:20:25 AM PDT · by SeekAndFind · 53 replies
    The Telegraph ^ | 07/24/2015 | Michael Hanlon
    Suddenly, space is getting interesting again. After decades of going boldly nowhere in low Earth orbit, Man, or rather his robotic emissaries, have made some startling discoveries in our Solar System. Cold, distant Pluto is – who would have thought it? – turning out to be one of the most interesting planets (yes, it is a planet) in the Solar System. Before the New Horizons probe turned up earlier this month, astronomers assumed it would be a dull, grey cratered rock. [SNIP] If we find life of any kind out there – whether it be Martian microbes (we have several...
  • What's That Spot On World Ceres?

    07/31/2015 8:51:48 AM PDT · by JimSEA · 21 replies
    JPL ^ | Unknown | NASA
    What's the spot on World Ceres? Can you guess what's creating those unusual bright spots on Ceres? On March 6, NASA's Dawn spacecraft began orbiting Ceres, the largest body in the main asteroid belt between Mars and Jupiter. Even before the spacecraft arrived at the dwarf planet, images revealed mysterious bright spots that captivated scientists and observers alike. Until Dawn gets a closer look over the next few months, it's anyone's guess what those spots could be. So, go ahead! Cast your vote below. - See more at: http://www.jpl.nasa.gov/dawn/world_ceres/#sthash.bwDwq56N.dpuf
  • NASA's New Horizons Probe Gives Us Our First Look at the 'Person in Pluto'

    06/22/2015 6:24:00 PM PDT · by BenLurkin · 33 replies
    nbc ^ | Jun 22 2015, 1:37 pm ET | Alan Boyle
    Humanity has looked up to the "Man in the Moon" for millennia, but this could be one of our first views of the "Person in Pluto." The views are getting better and better as NASA's New Horizons spacecraft approaches Pluto for its July 14 flyby — and the pictures have begun revealing surface details. Ian Regan, an image-processing enthusiast from Plymouth, England, combined four images from New Horizons' Long Range Reconnaissance Imager with color data from the probe's Multispectral Visible Imaging Camera to produce an eerie colorized view of Pluto and its biggest moon, Charon.
  • If the Moon Were Only 1 Pixel: A tediously accurate scale model of the Solar System

    06/21/2015 6:13:32 AM PDT · by rickmichaels · 69 replies
    joshworth.com | Josh Worth
    This is a waaaaaaaaaaaaay cool scale model of the Solar System that shows just how freakin' HUGE our own "little" neck of the woods really is. Scroll to the right... If the Moon Were Only 1 Pixel
  • Photos of Earth from Mars and Mars from Earth

    05/25/2015 4:24:26 PM PDT · by rickmichaels · 25 replies
    ebaumsworld.com ^ | March 18, 2015
    Just saw these cool pics of opposite views of the same thing...sort of:
  • Jupiter's moon Ganymede has vast underground ocean

    03/12/2015 2:27:53 PM PDT · by BenLurkin · 39 replies
    cbs ^ | WIlliam Harwood
    Larger than the planet Mercury, Ganymede is one of four moons discovered by Galileo in 1610, easily visible in small telescope and large binoculars. The subsurface ocean confirmed by Hubble is believed to be at least 60 miles thick, containing more water than all of Earth's ocean's combined. As such, Ganymede joins a growing list of planets and moons in Earth's solar system, including Jupiter's moon Europa and Saturn's moon Enceladus, that are known to harbor vast reservoirs of liquid water. The latest findings using the Hubble Space Telescope build on earlier observations by NASA's Galileo spacecraft that showed Ganymede...
  • Astronomy Picture of the Day -- Solar System Portrait

    02/14/2015 5:10:04 AM PST · by SunkenCiv · 7 replies
    NASA ^ | February 14, 2015 | (see photo credit)
    Explanation: On another Valentine's Day 25 years ago, cruising four billion miles from the Sun, the Voyager 1 spacecraft looked back one last time to make this first ever Solar System family portrait. The complete portrait is a 60 frame mosaic made from a vantage point 32 degrees above the ecliptic plane. In it, Voyager's wide angle camera frames sweep through the inner Solar System at the left, linking up with gas giant Neptune, the Solar System's outermost planet, at the far right. Positions for Venus, Earth, Jupiter, Saturn, Uranus, and Neptune are indicated by letters, while the Sun is...