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Thread: Space Pics v.3

  1. #881
    Moderator at Work ilan's Avatar
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    Astronomy Picture of the Day
    NASA Release | 27 October 2019


    Dark Seahorse in Cepheus
    Image Credit & Copyright: Sergio Kaminsky
    Light-years across, this suggestive shape known as the Seahorse Nebula appears in silhouette against a rich, luminous background of stars. Seen toward the royal northern constellation of Cepheus, the dusty, obscuring clouds are part of a Milky Way molecular cloud some 1,200 light-years distant. It is also listed as Barnard 150 (B150), one of 182 dark markings of the sky cataloged in the early 20th century by astronomer E. E. Barnard. Packs of low mass stars are forming within from collapsing cores only visible at long infrared wavelengths. Still, colorful stars in Cepheus add to the pretty, galactic skyscape.
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  2. #882
    Nascar Pool Diecast Winner Ryu's Avatar
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    cool stuff Ilan. Thanks
    All information provided is for informational purposes only. Use at your own risk.

  3. #883
    Moderator at Work ilan's Avatar
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    Celestial dust bunnies
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  4. #884
    Moderator at Work ilan's Avatar
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    Astronomy Picture of the Day
    NASA Release | 1 November 2019

    The Ghostly Veil Nebula
    Image Credit & Copyright: Anis Abdul
    A ghostly visage on a cosmic scale, these remains of shocked, glowing gas haunt planet Earth's sky toward the constellation of Cygnus and form the Veil Nebula. The nebula itself is a large supernova remnant, an expanding cloud born of the death explosion of a massive star. Light from the original supernova explosion likely reached Earth over 5,000 years ago. Also known as the Cygnus Loop, the Veil Nebula now spans nearly 3 degrees or about 6 times the diameter of the full Moon. That translates to over 70 light-years at its estimated distance of 1,500 light-years. In fact, the Veil is so large its brighter parts are recognized as separate nebulae, including The Witch's Broom (NGC 6960) below and right of center. At the top left you can find the Spectre of IC 1340. Happy Halloween!
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  5. #885
    Moderator at Work ilan's Avatar
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    Astronomy Picture of the Day
    NASA Release | 11 November 2019

    The history of the Moon is partly written in its craters. Pictured here is a lunar panorama taken from Earth featuring the large craters Langrenus, toward the left, and Petavius, toward the right. The craters formed in separate impacts. Langrenus spans about 130 km, has a terraced rim, and sports a central peak rising about 3 km. Petavius is slightly larger with a 180 km diameter and has a distinctive fracture that runs out from its center. Although it is known that Petravius crater is about 3.9 billion years old, the origin of its large fracture is unknown. The craters are best visible a few days after a new Moon, when shadows most greatly accentuate vertical walls and hills. The featured image is a composite of the best of thousands of high-resolution, infrared, video images taken through a small telescope. Although mountains on Earth will likely erode into soil over a billion years, lunar craters Langrenus and Petavius will likely survive many billions more years, possibly until the Sun expands and engulfs both the Earth and Moon.
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    Moderator at Work ilan's Avatar
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    Astronomy Picture of the Day
    NASA Release | 24 November 2019


    Apollo 12: Self-Portrait
    Image Credit: NASA, Apollo 12, Charles Conrad
    Is this image art? 50 years ago, Apollo 12 astronaut-photographer Charles "Pete" Conrad recorded this masterpiece while documenting colleague Alan Bean's lunar soil collection activities on Oceanus Procellarum. The featured image is dramatic and stark. The harsh environment of the Moon's Ocean of Storms is echoed in Bean's helmet, a perfectly composed reflection of Conrad and the lunar horizon. Works of photojournalists originally intent on recording the human condition on planet Earth, such as Lewis W. Hine's images from New York City in the early 20th century, or Margaret Bourke-White's magazine photography are widely regarded as art. Similarly many documentary astronomy and space images might also be appreciated for their artistic and esthetic appeal.
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    Moderator at Work ilan's Avatar
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    Astronomy Picture of the Day
    NASA Release | 30 November 2019


    Galileo's Europa Remastered
    Image Credit: NASA, JPL-Caltech, SETI Institute, Cynthia Phillips, Marty Valenti
    Looping through the Jovian system in the late 1990s, the Galileo spacecraft recorded stunning views of Europa and uncovered evidence that the moon's icy surface likely hides a deep, global ocean. Galileo's Europa image data has been remastered here, using improved new calibrations to produce a color image approximating what the human eye might see. Europa's long curving fractures hint at the subsurface liquid water. The tidal flexing the large moon experiences in its elliptical orbit around Jupiter supplies the energy to keep the ocean liquid. But more tantalizing is the possibility that even in the absence of sunlight that process could also supply the energy to support life, making Europa one of the best places to look for life beyond Earth. What kind of life could thrive in a deep, dark, subsurface ocean? Consider planet Earth's own extreme shrimp.
    __________________________________

    Although the description doesn't mention it, Europa is one of Jupiter's 79 moons. It is subcategorized as one of Jupiter's four Galilean moons. These moons were discovered by Galileo Galilei and were named in his honor. Europa is slightly smaller than our Moon. - ilan
    Last edited by ilan; 11-30-2019 at 05:50 PM.
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    Moderator at Work ilan's Avatar
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    Astronomy Picture of the Day
    NASA Release | 15 December 2019


    Starburst Galaxy M94 from Hubble
    Image Credit & Copyright: ESA/Hubble & NASA
    Why does this galaxy have a ring of bright blue stars? Beautiful island universe Messier 94 lies a mere 15 million light-years distant in the northern constellation of the Hunting Dogs (Canes Venatici). A popular target for Earth-based astronomers, the face-on spiral galaxy is about 30,000 light-years across, with spiral arms sweeping through the outskirts of its broad disk. But this Hubble Space Telescope field of view spans about 7,000 light-years across M94's central region. The featured close-up highlights the galaxy's compact, bright nucleus, prominent inner dust lanes, and the remarkable bluish ring of young massive stars. The ring stars are all likely less than 10 million years old, indicating that M94 is a starburst galaxy that is experiencing an epoch of rapid star formation from inspiraling gas. The circular ripple of blue stars is likely a wave propagating outward, having been triggered by the gravity and rotation of a oval matter distributions. Because M94 is relatively nearby, astronomers can better explore details of its starburst ring.
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    Astronomy Picture of the Day
    NASA Release | 30 January 2020


    Two Clusters and a Comet
    Image Credit & Copyright: Rolando Ligustri (CARA Project, CAST)
    This lovely starfield spans some four full moons (about 2 degrees) across the heroic northern constellation of Perseus. In telescopic exposures made during the nights of January 24, 26, and 28 it holds the famous pair of open or galactic star clusters h and Chi Persei with comet PanSTARRS (C/2017 T2) captured each night as it swept left to right across the field of view. Also cataloged as NGC 869 (right) and NGC 884, both star clusters are about 7,000 light-years away and contain stars much younger and hotter than the Sun. Separated by only a few hundred light-years, the clusters are both 13 million years young based on the ages of their individual stars, evidence that they were likely a product of the same star-forming region. Discovered in 2017 while still beyond the orbit of Saturn, Comet PanSTARRs is a new visitor to the inner solar system and just over 13 light-minutes from planet Earth. Always a rewarding sight in binoculars, the Double Cluster is even visible to the unaided eye from dark locations. C/2017 T2 could remain a telescopic comet though. One of the brightest comets anticipated in 2020 it makes its closest approach to the Sun in early May.
    Last edited by ilan; 01-30-2020 at 11:22 PM.
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    Moderator at Work ilan's Avatar
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    Hubble glimpses a galaxy among many
    NASA's Goddard Space Flight Center | June 12, 2020


    Credit: ESA/Hubble & NASA, A. Riess et al.
    Looking deep into the universe, the NASA/ESA Hubble Space Telescope catches a passing glimpse of the numerous arm-like structures that sweep around this barred spiral galaxy, known as NGC 2608. Appearing as a slightly stretched, smaller version of our Milky Way, the peppered blue and red spiral arms are anchored together by the prominent horizontal central bar of the galaxy.

    In Hubble photos like this, bright foreground stars in the Milky Way will sometimes appear as pinpoints of light with prominent light flares known as diffraction spikes, an effect of the telescope optics. A star with these features is seen in the lower right corner of the image, and another can be spotted just above the pale center of the galaxy. The majority of the fainter points around NGC 2608, however, lack these features, and upon closer inspection they are revealed to be thousands of distant galaxies. NGC 2608 is just one among an uncountable number of kindred structures.

    Similar expanses of galaxies can be observed in other Hubble images such as the Hubble Deep Field, which recorded over 3,000 galaxies in one field of view.
    Last edited by ilan; 06-13-2020 at 01:29 PM.
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