Cool astronomy photos

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Re: Cool astronomy photos

Postby sparks » Fri Apr 21, 2017 11:27 pm

OK, I'll bite: WTF Listy?
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Re: Cool astronomy photos

Postby Grammatron » Fri Apr 21, 2017 11:29 pm

That's funny, sparks is expecting nice things
pillory wrote:jokes aren't funny....seriously thinking......

seriously thinking might be funny....but it's not joke

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Re: Cool astronomy photos

Postby sparks » Fri Apr 21, 2017 11:32 pm

They must be properly identified before...action...can be taken.
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Re: Cool astronomy photos

Postby Anaxagoras » Fri Apr 21, 2017 11:33 pm

:notsure: . . . :?
A fool thinks himself to be wise, but a wise man knows himself to be a fool.
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Re: Cool astronomy photos

Postby Abdul Alhazred » Sat Apr 22, 2017 4:03 pm

Back on track. :coolspecs:

... The point of light between the rings is Earth, 1.4 billion kilometers in the distance. Look carefully and you can even spot Earth's large moon, a pinprick of light to the planet's left. ...


Image

https://apod.nasa.gov/apod/ap170422.html
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Re: Cool astronomy photos

Postby sparks » Sat Apr 22, 2017 5:11 pm

I can see Bruce's new home...
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Re: Cool astronomy photos

Postby Anaxagoras » Tue Apr 25, 2017 7:25 am

Cassini is getting ready to make its closest ever flyby of Saturn:

Cassini sails by Saturn’s moon Titan for last time

NASA’s Cassini spacecraft sped by the moon Titan on Saturday, using the hazy world’s gravity to slingshot the probe on a trailblazing trajectory to explore the region between Saturn’s hydrogen-helium atmosphere and the planet’s famous rings for the first time.

Closing out an era of discovery that gave scientists their first glimpses of Titan’s seas, weather patterns and rippling sand dunes, Cassini sailed around 608 miles (979 kilometers) above the moon at 0608 GMT (2:08 a.m. EDT) Saturday.

The encounter served a dual purpose: Gather the mission’s final bits of close-up data on Titan, and reshape Cassini’s orbit to make the first passage inside Saturn’s rings.

Saturday’s flyby was be the last time scientists will capture detailed observations of Titan for at least a decade, and perhaps much longer. Cassini’s scientific sensors planned to gather information on Titan’s lakes and seas, study the moon’s atmosphere, probe the interaction between Titan’s ionosphere and Saturn’s magnetic field, and take a sequence of pictures.

“Cassini’s up-close exploration of Titan is now behind us, but the rich volume of data the spacecraft has collected will fuel scientific study for decades to come,” said Linda Spilker, the mission project scientist at the Jet Propulsion Laboratory in Pasadena, California.
With a gravitational nudge from Titan, Cassini is now heading for its first passage between Saturn and its rings, ready to fly through a region that was long thought too hazardous to traverse.

The trajectory will take Cassini through the 1,500-mile (2,400-kilometer) gap between Saturn and the inner perimeter of the D ring, a dark band of icy grains that is the closest ring to the planet’s yellow-gold cloud tops.


Image

Cassini will make the trip inside the rings around 0900 GMT (5 a.m. EDT) Wednesday, flying with its 13-foot-diameter (4-meter) dish-shaped high-gain antenna in the so-called “ram” position facing in the craft’s direction of travel.

The probe will hide behind the antenna, shielding Cassini’s control computers and science instruments from any icy debris that might be hiding in the ring gap as it races through it at a relative speed of 76,000 mph (122,000 kilometers per hour).”

“At those speeds, even a tiny piece could do damage to our science instruments,” said Joan Stupik, a Cassini guidance and control engineer at JPL. “So we use our high-gain antenna as a shield to protect the rest of the spacecraft.”
“In many ways, the grand finale for Cassini is like a brand new mission,” Spilker said earlier this year. “We’re going to probe Saturn’s interior, measure the magnetic field, look for the magnetic dynamo, and try and figure out why is there is so little, or perhaps no, tilt between the magnetic field axis and the spin axis of Saturn. What’s going on there?”
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Re: Cool astronomy photos

Postby Doctor X » Tue Apr 25, 2017 8:54 am

Will it then enter Uran . . . oh look! Shiny!

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Re: Cool astronomy photos

Postby Abdul Alhazred » Sun Apr 30, 2017 11:58 am

This is what Saturn looks like from inside the rings.


https://apod.nasa.gov/apod/ap170430.html
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Re: Cool astronomy photos

Postby Witness » Mon May 01, 2017 3:51 am

https://www.youtube.com/watch?v=KQLQkG64IKU

Raw images pieced together, I presume. Makes an eerie clip.

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Re: Cool astronomy photos

Postby Witness » Tue May 02, 2017 7:32 pm

Just the Moon rising.

https://www.youtube.com/watch?v=6NUvSv6O1fM

(La Grande-Motte ["The Big Mons Veneris"?] is an awful tourist trap on the Mediterranean shores.) :mrgreen:

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Re: Cool astronomy photos

Postby Witness » Tue May 09, 2017 3:00 am

Image
Nick Risinger wrote:I’m at 6,200 feet in the Nevada desert capturing the first images of what will ultimately become a 37,440-exposure, 5,000-megapixel photograph of the entire night sky. It’s 18°F and while I try to keep my mind off the wind chill, the gusts continue to push over the ridge. As the first camera shutter snaps shut, a fairly typical portion of space appears on my laptop screen: other suns millions of billions of miles away are scattered across the frame, too many to count. The sheer work of what lies ahead slowly begins to sink in and I shudder — though not from the cold.

http://skysurvey.org/blog/2011/2/17/for-all-the-nights-stars

And zooming in:

https://www.youtube.com/watch?v=A2prA7wd7TA
Published on May 3, 2017

The video sequence takes the viewer from a wide view of the southern skies deep into a small nearby galaxy, the Small Magellanic Cloud. The final close-up infrared views are from a very detailed huge image of the galaxy taken using ESO's VISTA infrared survey telescope at the Paranal Observatory in Chile. Millions of stars and many star clusters and much more distant galaxies are visible.

Credit:
ESO/VISTA VMC/N. Risinger (skysurvey.org). Music: Astral electronic.

This music is hideous. :x

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Re: Cool astronomy photos

Postby Witness » Wed May 10, 2017 5:52 pm


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Re: Cool astronomy photos

Postby Witness » Sat May 13, 2017 5:35 pm

Image
Methane clouds are visible in this image of Saturn's moon Titan that was captured by NASA's Cassini spacecraft on May 7, 2017. The left-hand version of the photo features stronger enhancement than the right-hand version.
Credit: NASA/JPL-Caltech/Space Science Institute

Wispy bands of methane clouds brighten Saturn's big moon Titan in a striking new image by NASA's Cassini spacecraft.

Cassini took the newly released photo Sunday (May 7), when it was about 316,000 miles (508,000 kilometers) from Titan, NASA officials said.

At the time, Cassini was zooming toward Saturn, getting ready for Tuesday's (May 9) plunge between the gas giant's cloud tops and its innermost rings. The probe has now completed three of these dives, and will perform 19 more before its mission ends this September.
[…]
The $3.2 billion Cassini-Huygens mission — a joint effort involving NASA, the European Space Agency and the Italian Space Agency — launched in October 1997 and reached Saturn in July 2004.

http://www.space.com/36795-saturn-moon-titan-clouds-cassini-photo.html

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Re: Cool astronomy photos

Postby Witness » Mon May 15, 2017 5:53 pm

Image
Astronomy Magazine wrote:The first true-color images of Saturn taken during Cassini’s close encounter are coming in — and they’re beautiful!

That striking, sky-blue feature is the eye of a persistent hurricane at Saturn’s north pole. The feature is 1,200 miles across, about 20 times larger than the average hurricane eye on Earth. And clouds are swirling around it as fast as 330 miles per hour.

The striking cerulean color is not at all false. It comes from scattering of sunlight, the same phenomenon that produces a blue sky here on Earth.

To produce the image, Nasr used Photoshop to combine three photographs taken using blue, green and red filters. With a little additional tweaking of contrast and other factors, Nasr produced something akin to what the scene would look like to our eyes if we were hitching a ride on Cassini.

http://www.astronomy.com/news/2017/05/cassinis-close-up-of-saturn

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Re: Cool astronomy photos

Postby Witness » Fri May 19, 2017 3:55 am


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Re: Cool astronomy photos

Postby Witness » Wed May 24, 2017 3:06 am

Image
See Images of International Borders Taken From Space

International borders are often delineated by far more than lines on a map. In the most extreme cases, these differences between countries or the borders themselves are so distinct they are distinguishable from space. From imbalances in development to the construction of new walls or the lasting effects of old ones.

More pics: http://time.com/4780003/international-borders-from-space/

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Re: Cool astronomy photos

Postby Abdul Alhazred » Wed May 24, 2017 10:17 pm

Different color street lights?
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Re: Cool astronomy photos

Postby sparks » Thu May 25, 2017 2:35 am

Democracy vs Commie Bastards! Our guys are blue and theirs.... theirs are.... RED!!!11
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Re: Cool astronomy photos

Postby Rob Lister » Thu May 25, 2017 9:30 am

The lights east and west appear the same, as do the roads. I think the difference in color is plant-based. Grass and crops.


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