Cool astronomy photos

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Abdul Alhazred
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Re: Cool astronomy photos

Post by Abdul Alhazred » Tue Aug 20, 2019 12:38 pm

Animation: Spiral Disk around a Black Hole
https://apod.nasa.gov/apod/ap190820.html

Best viewed full screen.
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Witness
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Re: Cool astronomy photos

Post by Witness » Fri Aug 23, 2019 1:54 am

Mars, inexhaustible:

Image

Image

Image

Details & links: https://mars.nasa.gov/resources/22388/c ... nia-basin/

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Re: Cool astronomy photos

Post by Witness » Sun Aug 25, 2019 1:53 am


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Re: Cool astronomy photos

Post by Witness » Tue Aug 27, 2019 1:15 am

Image

Thunderstorm in Florida. Tianyuan Xiao (Australia).

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Re: Cool astronomy photos

Post by Witness » Tue Aug 27, 2019 11:54 pm

Image

Earth Shine by Peter Ward (Australia).

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Anaxagoras
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Re: Cool astronomy photos

Post by Anaxagoras » Thu Aug 29, 2019 9:02 am

During a solar eclipse?
A fool thinks himself to be wise, but a wise man knows himself to be a fool.
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sparks
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Re: Cool astronomy photos

Post by sparks » Thu Aug 29, 2019 1:48 pm

Why not? The shadow of the Moon on the Earth is only a small part of the hemisphere, even during a total eclipse.

The tough part would be photographing it.
You can lead them to knowledge, but you can't make them think.

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Re: Cool astronomy photos

Post by Anaxagoras » Thu Aug 29, 2019 2:11 pm

I'm guessing they used some kind of filter like very dark sunglasses for the camera.
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

Post by sparks » Thu Aug 29, 2019 5:24 pm

Seems like a new moon sans eclipse would be a lot easier, but not as dramatic. Perhaps the photo is a composite?
You can lead them to knowledge, but you can't make them think.

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Witness
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Re: Cool astronomy photos

Post by Witness » Fri Aug 30, 2019 12:28 am

sparks wrote:
Thu Aug 29, 2019 5:24 pm
Perhaps the photo is a composite?
Yes, but not a fake composite (some different full moon copied into the eclipse):
WhenIsTheNextEclipse: How did you get the shot?

Ward: Many bracketed exposures. I had seen hints of the Lunar surface in previous eclipses. Jackson is around 6,000 ft. above sea level hence the sky transparency should have been good. I had intended getting some deep exposures from the outset and packed a Losmandy tracking head with high quality/high contrast optics for those exposures. As it turned out, sky conditions were excellent on eclipse day.

WhenIsTheNextEclipse: Did it take a lot of post-processing?

Ward: I ended up using around nine layers in Photoshop CC, with some layers also made from 2-3 combined exposures. Masking and processing was time consuming, many hours were spent in Photoshop, PixInsight, MaxIMCCD and Avistack.
https://whenisthenexteclipse.com/photog ... e-wyoming/

So just HDR from stacked pictures.

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Re: Cool astronomy photos

Post by Witness » Fri Aug 30, 2019 12:32 am

Here's another interesting "fake":

Image
I removed the stars from my image of the Heart Nebula to showcase the swirling clouds of gas and dust that took over 20 hours of exposure to create.
https://old.reddit.com/r/Astronomy/comm ... the_heart/

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Witness
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Re: Cool astronomy photos

Post by Witness » Thu Sep 05, 2019 12:19 am

China’s lunar rover finds unknown ‘gel-like’ substance on the far side of the moon

Scientists are scratching their heads after China’s lunar rover Yutu-2 discovered an unknown, gel-like substance on the surface of the moon.

The discovery was made on July 28 during “lunar day 8” of an exploration mission to a region on the far side of the moon, NBC News reports. Day 8 began on July 25 and ended on July 28, according to a Yutu-2 “drive diary” published on Aug. 17 by the Chinese-language publication Our Space.

Scientists working on the Chang’e-4 mission were about to power down the rover for a “nap” when they noticed a crater with a strange substance depicted on Yutu-2’s main camera. Excited by the discovery, Space.com reports that the rover’s drive team called in their mission scientists and together decided to postpone Yutu-2’s plans to travel west and instead proceeded to more closely examine the material.

According to Our Space, the gel was “significantly different from the surrounding lunar soil” in shape and colour. Since the original announcement, there have been no updates on the substance, but the Chinese publication People’s Daily reports that scientists are currently analyzing it.

While the substance has piqued the interest of the scientific community, few have any idea what the substance could be. Mahesh Anand, vice president of the U.K.’s Royal Astronomical Society, told Newsweek in an email that the gel substance could be a fine-grained volcanic glass.

“The fact that it has been observed associated with a small impact crater, this finding could be extremely exciting as it would indicate that a very different material could just be hiding underneath the very top surface,” he wrote in the email.

“This would assume even a greater significance if these materials turn out to have experienced interaction with water-ice (as the possibility of existence of water-ice in the top few metres of the lunar South polar region is predicted on the basis of recent remote sensing data set).”
https://globalnews.ca/news/5846104/chin ... very-moon/

Image

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robinson
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Re: Cool astronomy photos

Post by robinson » Mon Sep 09, 2019 6:24 pm

Hey, here's an idea. Bring some of it back to earth.
You never know what's going to happen, then some shit happens nobody saw coming, then later somebody says they knew it was coming, then some new shit happens nobody saw coming, rinse and repeat

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Abdul Alhazred
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Re: Cool astronomy photos

Post by Abdul Alhazred » Mon Sep 09, 2019 6:46 pm

I saw the movie The Green Slime.

No. Do not bring it back to Earth.

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Re: Cool astronomy photos

Post by Fid » Mon Sep 09, 2019 8:55 pm

I agree. If one is to have a world destroying extra-terrestrial plague for god's sake make sure it has a decent theme song. We don't know what how or if this Chinese stuff even uses the chromatic scale.
"Try SCE to AUX."
Yeah, me and an electrified atmosphere ain't friends.

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Witness
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Re: Cool astronomy photos

Post by Witness » Mon Sep 09, 2019 9:45 pm

And the Indian thingy failed:
India moon mission: Vikram lunar lander found on surface

Efforts are underway to establish contact, days after communications were lost during failed landing
https://www.theguardian.com/science/201 ... on-surface

Shot down by aliens, I'm sure.



Jupiter's auroras (Hubble).


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shemp
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Re: Cool astronomy photos

Post by shemp » Tue Sep 10, 2019 2:28 am

Abdul Alhazred wrote:
Mon Sep 09, 2019 6:46 pm
I saw the movie The Green Slime.

No. Do not bring it back to Earth.

I saw that when I was 12. Theater was packed with kids. I ate two boxes of chocolate nonpareils and a large popcorn.

Yes, I was a fat kid.
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Freedom of choice
Is what you got
Freedom from choice
Is what you want

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Witness
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Re: Cool astronomy photos

Post by Witness » Wed Oct 02, 2019 9:17 pm

Upload 2019-09-28: JunoCam Perijove 22 Flyby Movie: http://junocam.pictures/gerald/uploads/20190928/ where you can download the stills.

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Abdul Alhazred
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Re: Cool astronomy photos

Post by Abdul Alhazred » Thu Oct 03, 2019 6:22 pm

Image "If I turn in a sicko, will I get a reward?"

"Yes! A BIG REWARD!" ====> Click here to turn in a sicko
The arc of the moral universe bends towards chaos.
People who believe God or History are on their side provide the chaos.

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Re: Cool astronomy photos

Post by Anaxagoras » Thu Oct 03, 2019 11:48 pm

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