Cool astronomy photos

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Re: Cool astronomy photos

Post by Doctor X » Thu Aug 23, 2018 7:13 am

Just ask:

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Re: Cool astronomy photos

Post by Witness » Sun Aug 26, 2018 3:46 am

Hubble Paints Picture of the Evolving Universe

Astronomers using the ultraviolet vision of NASA’s Hubble Space Telescope have captured one of the largest panoramic views of the fire and fury of star birth in the distant universe. The field features approximately 15,000 galaxies, about 12,000 of which are forming stars. Hubble’s ultraviolet vision opens a new window on the evolving universe, tracking the birth of stars over the last 11 billion years back to the cosmos’ busiest star-forming period, which happened about 3 billion years after the big bang.

Ultraviolet light has been the missing piece to the cosmic puzzle. Now, combined with infrared and visible-light data from Hubble and other space and ground-based telescopes, astronomers have assembled one of the most comprehensive portraits yet of the universe’s evolutionary history.

The image straddles the gap between the very distant galaxies, which can only be viewed in infrared light, and closer galaxies, which can be seen across a broad spectrum. The light from distant star-forming regions in remote galaxies started out as ultraviolet. However, the expansion of the universe has shifted the light into infrared wavelengths. By comparing images of star formation in the distant and nearby universe, astronomers glean a better understanding of how nearby galaxies grew from small clumps of hot, young stars long ago.

Because Earth’s atmosphere filters most ultraviolet light, Hubble can provide some of the most sensitive space-based ultraviolet observations possible.
https://www.nasa.gov/feature/goddard/20 ... g-universe

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Re: Cool astronomy photos

Post by Witness » Mon Aug 27, 2018 12:30 am

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Hmmm…

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Re: Cool astronomy photos

Post by Witness » Mon Aug 27, 2018 2:25 pm


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Re: Cool astronomy photos

Post by Witness » Tue Aug 28, 2018 12:19 am

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Re: Cool astronomy photos

Post by Witness » Thu Aug 30, 2018 2:25 am

Map Of One Billion Stars Could Revolutionize Our Understanding of Space
By Yasmeen Fakhro on Thu, 26 Apr 2018

A newly-released data set from the European Space Agency’s Gaia mission contains high-precision measurements about the distances and movements of around 1.4 billion stars, providing unparalleled information about our galaxy and beyond.

This is the second set of data we’ve received from Gaia, a spacecraft orbiting the Sun. The vehicle launched in 2013 and released its first batch of measurements three years later. The new data set goes far beyond the 2016 catalogue by mapping a dizzying number of stars in astonishing detail—and even measuring the brightness, color, and surface temperatures of some stars.
[…]
Gaia will be the first to use a novel technique called astrometric detection to look for small wobbles in stars’ positions. Since planets exert a gravitational pull on the stars that they orbit, these wobbles can provide valuable information about planets in the far corners of our universe.

The 2020 data release will complement NASA’s Kepler mission and its successor TESS, which finds planets using transit photometry and detects the subtle dimming of stars as planets pass between Earth and these stars. The hope is that Gaia will verify NASA’s findings and further our search for new planets and life beyond Earth.

The best part is that this bounty of data isn’t just for astronomers. Anyone with an internet connection can download Gaia’s measurements from the project website and figure out where their favorite space object is.
http://www.pbs.org/wgbh/nova/next/space ... -of-space/

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The European spacecraft Gaia just unveiled this portrait of the Milky Way galaxy.
The Gaia archive: http://gea.esac.esa.int/archive/, where you can download the data and software to play with it.

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Re: Cool astronomy photos

Post by Witness » Fri Aug 31, 2018 2:23 am


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Re: Cool astronomy photos

Post by sparks » Fri Aug 31, 2018 3:40 am

Only a fore taste of the doom to come!
You can lead them to knowledge, but you can't make them think.

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Re: Cool astronomy photos

Post by Witness » Sun Sep 09, 2018 12:29 am

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Stars v. Dust in the Carina Nebula

VISTA gazes into one of the largest nebulae in the Milky Way in infrared

About 7500 light-years away, in the constellation of Carina, lies a nebula within which stars form and perish side-by-side. Shaped by these dramatic events, the Carina Nebula is a dynamic, evolving cloud of thinly spread interstellar gas and dust.

The massive stars in the interior of this cosmic bubble emit intense radiation that causes the surrounding gas to glow. By contrast, other regions of the nebula contain dark pillars of dust cloaking newborn stars. There’s a battle raging between stars and dust in the Carina Nebula, and the newly formed stars are winning — they produce high-energy radiation and stellar winds which evaporate and disperse the dusty stellar nurseries in which they formed.

Spanning over 300 light-years, the Carina Nebula is one of the Milky Way's largest star-forming regions and is easily visible to the unaided eye under dark skies. Unfortunately for those of us living in the north, it lies 60 degrees below the celestial equator, so is visible only from the Southern Hemisphere.

Within this intriguing nebula, Eta Carinae takes pride of place as the most peculiar star system. This stellar behemoth — a curious form of stellar binary— is the most energetic star system in this region and was one of the brightest objects in the sky in the 1830s. It has since faded dramatically and is reaching the end of its life, but remains one of the most massive and luminous star systems in the Milky Way.

Eta Carinae can be seen in this image as part of the bright patch of light just above the point of the “V” shape made by the dust clouds. Directly to the right of Eta Carinae is the relatively small Keyhole Nebula — a small, dense cloud of cold molecules and gas within the Carina Nebula — which hosts several massive stars, and whose appearance has also changed drastically over recent centuries.
https://www.eso.org/public/news/eso1828/

More pictures: https://www.eso.org/public/images/?search=Carina+Nebula

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Re: Cool astronomy photos

Post by Witness » Mon Sep 10, 2018 11:01 pm

New Antarctica satellite map:

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Details & lots of pics: https://www.nytimes.com/2018/09/07/scie ... on=Science
The team used 187,585 images collected over six years to create the map.

“Until now, we’ve had a better map of Mars than we’ve had of Antarctica,” said Dr. Howat.

The pictures are so detailed they had to use one of the most powerful supercomputers on Earth to ingest the data. Having access to this amount of information will allow researchers to better monitor the effects of climate change on the ice.

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Re: Cool astronomy photos

Post by Witness » Wed Sep 12, 2018 12:08 am

More doom for sparks:

:twisted:

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Re: Cool astronomy photos

Post by sparks » Wed Sep 12, 2018 2:27 am

Indeed. It's on it's way!!! Run for the hills. This will not save you, but it will give you something to do before you die. :)
You can lead them to knowledge, but you can't make them think.

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Re: Cool astronomy photos

Post by Witness » Tue Sep 18, 2018 1:43 am