Cool astronomy photos

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Witness
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Re: Cool astronomy photos

Post by Witness » Sat Jul 20, 2019 1:27 am


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Witness
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Re: Cool astronomy photos

Post by Witness » Sun Jul 21, 2019 12:27 am

Best watched full screen in high rez:

Shot at 35mm Focal length with Tamron 28-70 and Sony A7S You can make out the Nebulae (Omega, Eagle, Trifid, Lagoon etc.,) as well as Milky Way core. The bright object is Jupiter, and to the right is Rho Oph Cloud complex.

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Witness
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Re: Cool astronomy photos

Post by Witness » Sun Jul 28, 2019 1:09 am

The Galactic Center in Radio from MeerKAT

Image

Explanation: What's happening at the center of our galaxy? It's hard to tell with optical telescopes since visible light is blocked by intervening interstellar dust. In other bands of light, though, such as radio, the galactic center can be imaged and shows itself to be quite an interesting and active place. The featured picture shows the inaugural image of the MeerKAT array of 64 radio dishes just completed in South Africa. Spanning four times the angular size of the Moon (2 degrees), the image is impressively vast, deep, and detailed. Many known sources are shown in clear detail, including many with a prefix of Sgr, since the Galactic Center is in the direction of the constellation Sagittarius. In our Galaxy's Center lies Sgr A, found here just to the right of the image center, which houses the Milky Way's central supermassive black hole. Other sources in the image are not as well understood, including the Arc, just to the left of Sgr A, and numerous filamentary threads. Goals for MeerKAT include searching for radio emission from neutral hydrogen emitted in a much younger universe and brief but distant radio flashes.
https://apod.nasa.gov/apod/ap190708.html


And combined with Chandra's X-rays:

Image
http://chandra.si.edu/photo/2019/20th/

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Witness
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Re: Cool astronomy photos

Post by Witness » Mon Jul 29, 2019 3:34 am



Grid fin for scale:

Image

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Bruce
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Re: Cool astronomy photos

Post by Bruce » Mon Jul 29, 2019 7:39 am

Fake!

He's probably just reversing the flow of time to make it look like the rockets are landing vertically.

That would be the simpler explanation. :wink:
Such potential!

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Anaxagoras
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Re: Cool astronomy photos

Post by Anaxagoras » Fri Aug 09, 2019 6:54 am

Image

Taken by the Hubble telescope.
A fool thinks himself to be wise, but a wise man knows himself to be a fool.
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Doctor X
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Re: Cool astronomy photos

Post by Doctor X » Fri Aug 09, 2019 7:50 am

One of these days I will have to look up how that layers remain pretty much intact.

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Witness
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Re: Cool astronomy photos

Post by Witness » Fri Aug 09, 2019 9:58 pm

Image
Explanation: What does our region of the Universe look like? Since galaxies are so spread out over the sky, and since our Milky Way Galaxy blocks part of the distant sky, it has been hard to tell. A new map has been made, however, using large-scale galaxy motions to infer what massive objects must be gravitating in the nearby universe. The featured map, spanning over 600 million light years on a side, shows that our Milky Way Galaxy is on the edge of the Virgo Cluster of Galaxies, which is connected to the Great Attractor -- an even larger grouping of galaxies. Also nearby are the massive Coma Cluster and the extensive Perseus-Pisces Supercluster. Conversely, we are also on the edge of huge region nearly empty of galaxies known as the Local Void. The repulsive push by the Local Void combined with the gravitational pull toward the elevated galaxy density on the other side of the sky explains part of the mysteriously high speed our Galaxy has relative to the cosmic microwave background -- but not all. To explore the local universe yourself, as determined by Cosmicflows-3, you are invited to zoom in and spin around this interactive 3D visualization.
https://apod.nasa.gov/apod/ap190806.html

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Re: Cool astronomy photos

Post by shemp » Sat Aug 10, 2019 2:03 am

The universe is so fucking big! Almost as big as Gram's mom's cunt!
"It is not I who is mad! It is I who is crazy!" -- Ren Hoek

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Re: Cool astronomy photos

Post by Witness » Mon Aug 12, 2019 12:47 am


Video at the link.

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Bruce
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Re: Cool astronomy photos

Post by Bruce » Tue Aug 13, 2019 2:11 am

That's a big one!
Such potential!

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Re: Cool astronomy photos

Post by Witness » Tue Aug 13, 2019 11:32 pm

Image
Hubble Catches 2 Galaxies at Play

This galactic duo is known as UGC 2369. The galaxies are interacting, meaning that their mutual gravitational attraction is pulling them closer and closer together and distorting their shapes in the process.
https://www.nasa.gov/multimedia/imagegallery/iotd.html

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Re: Cool astronomy photos

Post by Anaxagoras » Wed Aug 14, 2019 11:19 am

Image
A fool thinks himself to be wise, but a wise man knows himself to be a fool.
William Shakespeare

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Witness
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Re: Cool astronomy photos

Post by Witness » Wed Aug 14, 2019 11:22 pm

And here's Saturn behind the Moon:

Image
https://apod.nasa.gov/apod/ap190814.html


As we're at it, another pic I took ~ 2 months ago, just before full Moon:

Image

Could be better… :(

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Fid
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Re: Cool astronomy photos

Post by Fid » Thu Aug 15, 2019 1:13 am

It seems badly in need of repair.
"Try SCE to AUX."
Yeah, me and an electrified atmosphere ain't friends.

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Bruce
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Re: Cool astronomy photos

Post by Bruce » Thu Aug 15, 2019 2:10 am

That'll buff out.
Such potential!

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Re: Cool astronomy photos

Post by Witness » Thu Aug 15, 2019 8:10 pm

Fid wrote:
Thu Aug 15, 2019 1:13 am
It seems badly in need of repair.
An old Death Star, has seen many battles. :mrgreen:




Image
Long Streamer of Hydrogen Gas Trails Behind Plunging Galaxy

A long streamer of hydrogen gas is being stripped from the spiral galaxy D100 as it plunges toward the center of the giant Coma galaxy cluster. This wide view is a composite of the Hubble Space Telescope's visible-light view of the galaxy combined with a photo of a glowing red streamer of hydrogen gas taken by the Subaru Telescope in Hawaii.

The narrow funnel-shaped feature emanating from the galaxy's center is the red glow of hydrogen gas. This glowing tail extends for nearly 200,000 light-years, but the pencil-like structure is comparatively narrow – only 7,000 light-years wide. The tail's clean edges and smooth structure suggests that magnetic fields play a prominent role in shaping it.

Hubble's sharp vision uncovered the blue, glowing clumps of young stars in the tail. The brightest clump, near the middle of the tail [the blue feature], contains at least 200,000 stars, triggered by the ongoing gas loss from the galaxy.

The gas-loss process occurs when a galaxy, due to the pull of gravity, falls toward the dense center of a massive cluster of thousands of galaxies. During its plunge, the galaxy plows through intergalactic material, like a boat moving through water. This material pushes gas and dust out of the galaxy. Once the galaxy loses all of its gas – its star-making fuel – it can no longer create new stars. The gas-stripping process in D100 began roughly 300 million years ago.

The reddish galaxies in the image contain older stars between the ages of 500 million to 13 billion years old. One of those galaxies is D99, just below and to the left of D100. It was stripped of its gas by the same process as the one that is siphoning gas from D100. The blue galaxies contain a mixture of young and old stars. Some of the stars are less than 500 million years old.

The Coma cluster is located 330 million light-years from Earth.

This image is a blend of several exposures taken in visible light between May 10 and July 10, 2016, and November 2017 to January 2018, by Hubble's Advanced Camera for Surveys. Researchers overlaid an image of the glowing, red, hydrogen tail, taken in visible light between April 28 and May 3, 2006, by the Subaru Telescope's Subaru Prime Focus Camera (Suprime-Cam) in Hawaii.
https://hubblesite.org/image/4296/gallery

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Rob Lister
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Re: Cool astronomy photos

Post by Rob Lister » Thu Aug 15, 2019 10:58 pm

I think it is not hydrogen gas. I think it is some sort of sulfur compound. Every other galaxy knows who dealt it.

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Witness
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Re: Cool astronomy photos

Post by Witness » Sun Aug 18, 2019 3:13 am

Fly over the Moon:



I found fascinating how different the various craters are, once you look at the details of their structure.