APOD: Space Station, Solar Prominences, Sun (2021 May 04)

Comments and questions about the APOD on the main view screen.
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APOD: Space Station, Solar Prominences, Sun (2021 May 04)

Post by APOD Robot » Tue May 04, 2021 4:05 am

Image Space Station, Solar Prominences, Sun

Explanation: That's no sunspot. It's the International Space Station (ISS) caught passing in front of the Sun. Sunspots, individually, have a dark central umbra, a lighter surrounding penumbra, and no Dragon capsules attached. By contrast, the ISS is a complex and multi-spired mechanism, one of the largest and most complicated spacecraft ever created by humanity. Also, sunspots circle the Sun, whereas the ISS orbits the Earth. Transiting the Sun is not very unusual for the ISS, which orbits the Earth about every 90 minutes, but getting one's location, timing and equipment just right for a great image is rare. The featured picture combined three images all taken from the same location and at nearly the same time. One image -- overexposed -- captured the faint prominences seen across the top of the Sun, a second image -- underexposed -- captured the complex texture of the Sun's chromosphere, while the third image -- the hardest to get -- captured the space station as it shot across the Sun in a fraction of a second. Close inspection of the space station's silhouette even reveals a docked Dragon Crew capsule.

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De58te
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Re: APOD: Space Station, Solar Prominences, Sun (2021 May 04)

Post by De58te » Tue May 04, 2021 11:10 am

"One of the largest spacecraft ever created." When people say one of the largest instead of saying THE largest, they usually mean there is another one slightly bigger. Like people rarely say Mount Everest is one of the tallest mountains on Earth. They usually mean that is the tallest. So I wonder which space station is just slightly bigger than the ISS?

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Re: APOD: Space Station, Solar Prominences, Sun (2021 May 04)

Post by orin stepanek » Tue May 04, 2021 11:23 am

IssSun_Ergun_960.jpg
The prominance at the top is huge; reminds of old faithful though!
ISS02_NASA_960.jpg
Was a nice tour they showed of the ISS! 8-) Spelunkers would love it!
Pic-2.jpeg
Aaawww!
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Smile today; tomorrow's another day!

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Re: APOD: Space Station, Solar Prominences, Sun (2021 May 04)

Post by Ann » Tue May 04, 2021 11:42 am

orin stepanek wrote:
Tue May 04, 2021 11:23 am
IssSun_Ergun_960.jpg
The prominance at the top is huge; reminds of old faithful though!
ISS02_NASA_960.jpg
Was a nice tour they showed of the ISS! 8-) Spelunkers would love it!
Pic-2.jpeg
Aaawww!
Thank you for showing us all these pictures, Orin! :D

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Re: APOD: Space Station, Solar Prominences, Sun (2021 May 04)

Post by neufer » Tue May 04, 2021 12:10 pm

De58te wrote:
Tue May 04, 2021 11:10 am

"One of the largest spacecraft ever created." When people say one of the largest instead of saying THE largest, they usually mean there is another one slightly bigger. Like people rarely say Mount Everest is one of the tallest mountains on Earth. They usually mean that is the tallest. So I wonder which space station is just slightly bigger than the ISS?
Saturn V was a 7 times more massive spacecraft (at take off) and was no doubt of larger total volume.
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Re: APOD: Space Station, Solar Prominences, Sun (2021 May 04)

Post by E Fish » Tue May 04, 2021 12:27 pm

It's too big to be a space station!

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Re: APOD: Space Station, Solar Prominences, Sun (2021 May 04)

Post by Sa Ji Tario » Tue May 04, 2021 1:38 pm

De58te, Don't forget the Skaylab and Mir, which are smaller in size but no less important.

Sa Ji Tario

Re: APOD: Space Station, Solar Prominences, Sun (2021 May 04)

Post by Sa Ji Tario » Tue May 04, 2021 1:41 pm

Everest is the highest among the five in the same mountain range

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Re: APOD: Space Station, Solar Prominences, Sun (2021 May 04)

Post by neufer » Tue May 04, 2021 5:39 pm

Everest is the highest peak among five high peaks on the same mountain.
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Re: APOD: Space Station, Solar Prominences, Sun (2021 May 04)

Post by Willb1 » Sat May 08, 2021 3:23 am

De58te wrote:
Tue May 04, 2021 11:10 am
"One of the largest spacecraft ever created." When people say one of the largest instead of saying THE largest, they usually mean there is another one slightly bigger. Like people rarely say Mount Everest is one of the tallest mountains on Earth. They usually mean that is the tallest. So I wonder which space station is just slightly bigger than the ISS?
Well, Mount Everest is not the tallest,so they should say Mount Everest is one of the tallest mountains on earth. The title of tallest mountain goes to Mauna Kea in Hawaii.