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James K's user avatar
James K's user avatar
James K's user avatar
James K
  • Member for 9 years, 7 months
  • Last seen this week
21 votes

What is this celestial phenomenon in the video?

20 votes
Accepted

If two asteroids will collide, how can we call it?

20 votes

"Tidally locked" Oort Cloud object

20 votes

What are the orbital velocities of the other planets? For objects in a 'Low-Earth-Orbit' around planets other than Earth, e.g.?

20 votes

Huge galaxies seen from earth

20 votes
Accepted

Where's the matter that created the CMB?

20 votes

Is there anything currently 46 billion light years away from Earth that we can see?

20 votes

Is there any other theory to explain Betelgeuse's strange behavior except cosmic dust?

20 votes

How can we know if a star which is visible in our night sky goes supernova?

20 votes
Accepted

How much does the sky change in a few thousand years?

19 votes

Why can I see sometimes a horizontal half moon instead of a vertical one?

19 votes

Could a planetary system have a planet in its center?

19 votes

Would an analogue of the definition for planets also work for moons?

19 votes
Accepted

Star like light moving in the sky, what could it be?

19 votes

Was Theia a planet or an asteroid?

19 votes
Accepted

Are main-sequence G9 stars habitable?

18 votes
Accepted

In 2023, is space still thought to be "filled with a network of wormholes"?

18 votes

Could we (Earth, Humanity, Solar System) be falling into a black hole?

18 votes

The darkness that is equivalent to the block of 99.5% of the sun

18 votes
Accepted

Why was Jupiter so bright; is it the "phase"?

18 votes

What is the difference between New Moon day and Lunar Eclipse?

18 votes
Accepted

Fate of Jupiter when our sun dies

18 votes
Accepted

Can you see the starting and the ending of a light beam passing in the distance?

18 votes

How can dark matter be observed?

18 votes
Accepted

Is it true that we see the center of the milky-way for only half of the year?

18 votes

Apparently two objects in Solar Eclipse image

17 votes
Accepted

Stargazing (Tenerife) - different quality today and yesterday

17 votes
Accepted

Have I nearly found the event horizon of a black hole?

17 votes

Jupiter with a mobile phone and Celestron Astro FI 102mm Maksutov

17 votes

How early could we detect an asteroid the size of the one that caused the extinction of the dinosaurs?

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