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Keyword: hyades

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  • Astronomy Picture of the Day -- Yosemite Winter Night

    12/25/2012 8:30:36 PM PST · by SunkenCiv · 17 replies
    NASA ^ | December 25, 2012 | (see photo credit)
    Explanation: In this evocative night skyscape a starry band of the Milky Way climbs over Yosemite Valley, Sierra Nevada Range, planet Earth. Jupiter is the brightest celestial beacon on the wintry scene, though. Standing nearly opposite the Sun in the constellation Taurus, the wandering planet joins yellowish Aldebaran and the Hyades star cluster. Below, Orion always comes up sideways over a fence of mountains. And from there the twin stars of Gemini rise just across the Milky Way. As this peaceful winter night began, they followed Auriga the charioteer, its alpha star Capella near the top of the frame.
  • Astronomy Picture of the Day -- Hyades for the Holidays

    12/24/2012 3:46:57 PM PST · by SunkenCiv · 6 replies
    NASA ^ | December 24, 2012 | (see photo credit)
    Explanation: Recognized since antiquity and depicted on the shield of Achilles according to Homer, stars of the Hyades cluster form the head of the constellation Taurus the Bull. Their general V-shape is anchored by Aldebaran, the eye of the Bull and by far the constellation's brightest star. Yellowish in appearance, red giant Aldebaran is not a Hyades cluster member, though. Modern astronomy puts the Hyades cluster 151 light-years away making it the nearest established open star cluster, while Aldebaran lies at less than half that distance, along the same line-of-sight. Along with colorful Hyades stars, this stellar holiday portrait locates...
  • Astronomy Picture of the Day -- Bright Jupiter in Taurus

    11/27/2012 3:22:35 AM PST · by SunkenCiv · 4 replies
    NASA ^ | November 27, 2012 | (see photo credit)
    Explanation: That bright star you've recently noticed rising just after sunset isn't a star at all. It's Jupiter, the solar system's ruling gas giant. Bright Jupiter is nearing its December 3rd opposition when it will stand in Taurus, opposite the Sun in planet Earth's sky. Clearly outshining yellowish Aldebaran, alpha star of Taurus, Jupiter is centered in this skyview from November 14th, also featuring the Pleiades and Hyades star clusters, familiar celestial sights as the northern hemisphere winter approaches. Sliding your cursor over the image will label the scene and identify two other solar system worlds approaching their opposition in...
  • Astronomy Picture of the Day -- Planet Aurora Borealis

    01/28/2012 8:49:34 AM PST · by SunkenCiv · 7 replies
    NASA ^ | January 28, 2012 | (see photo credit)
    Explanation: Illuminated by an eerie greenish light, this remarkable little planet is covered with ice and snow and ringed by tall pine trees. Of course, this little planet is actually planet Earth, and the surrounding stars are above the horizon near Östersund, Sweden. The pale greenish illumination is from a curtain of shimmering Aurora Borealis also known as the Northern Lights. The display was triggered when a giant solar coronal mass ejection (CME) rocked planet Earth's magnetosphere on January 24th and produced a strong geomagnetic storm. Northern hemisphere skygazers will also recognize the familiar orientation of stars at the left,...
  • Astronomy Picture of the Day -- Pleiades to Hyades

    11/17/2011 3:31:03 PM PST · by SunkenCiv · 24 replies · 1+ views
    NASA ^ | November 17, 2011 | (see photo credit)
    Explanation: This cosmic vista stretches almost 20 degrees across the gentle constellation Taurus. It begins at the Pleiades and ends at the Hyades, two of the best known star clusters in planet Earth's sky. At left, the lovely Pleiades star cluster is about 400 light-years away. In a familiar celestial scene, the cluster stars shine through dusty clouds that scatter blue starlight. At right, the V-shaped Hyades cluster looks more spread out compared to the compact Pleiades and lies much closer, 150 light-years distant. Of course, the Hyades cluster stars seem anchored by bright Aldebaran, a red giant star with...
  • Astronomy Picture of the Day 4-29-02

    04/28/2002 10:18:06 PM PDT · by petuniasevan · 8 replies · 317+ views
    NASA ^ | 4-29-02 | Robert Nemiroff and Jerry Bonnell
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 April 29 Dusk of the Planets Credit & Copyright: Jerry Lodriguss Explanation: A great grouping of planets is now visible to the west just after sunset. Over the next two weeks, Mercury, Venus, Earth, Mars, Jupiter, and Saturn -- all the planets of the inner Solar System -- can be seen in a single knowing glance. The image on the left captured them all in one frame. Connecting...