Skip to main content
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
30 votes
Accepted

Is the initial gravity of the black hole the same as the mass of the object that created it?

30 votes

Why is the L3 Lagrangian point not perfectly stable? And why is the Earth-Sun L3 point a bit less than one A.U.?

30 votes
Accepted

How is it possible for a collision to be responsible for Uranus's axial tilt?

30 votes
Accepted

The newly discovered comet NEOWISE has been given the name C/2020 F3. What is the meaning of the F3 and the C in this name?

29 votes
Accepted

Starting a fire in a cold planet that was full of flammable gas

29 votes
Accepted

Can I sense a bright star pointing an eight foot antenna towards it?

29 votes
Accepted

Quantum Mechanics after the detection of Gravitational Waves

29 votes

Hot meteorite lands on bed

29 votes
Accepted

What do Saturn's rings look like during a total solar eclipse, viewed from one of its moons?

28 votes
Accepted

Daylight hours on Titan?

28 votes

Is there enough matter orbiting the sun to make a second sun?

28 votes

Does a parabolic trajectory really exist in nature?

27 votes
Accepted

How many planets have we discovered that can support human life?

27 votes

Is a perfectly circular orbit possible?

27 votes

How many pixels could an image of Proxima b taken by James Webb have?

27 votes
Accepted

How fast would a one mile asteroid have to go for it to match the impact that killed the dinosaurs?

26 votes
Accepted

Is there enough data in light coming from distant exoplanets for Earth-orbiting telescopes to take a high-resolution photo of it?

26 votes

How did asteroid (7482) 1994 PC1 get its "face"? Is it reconstructed from optical or radar imaging, or something else?

26 votes
Accepted

Would the Earth and Moon still have tides after the Earth tidally locks to the Moon?

26 votes
Accepted

Do Pulsar stars make actual sounds?

26 votes
Accepted

Why nuclear fusion with hydrogen alone, why not with others?

26 votes

Telescope on drones to escape light pollution?

26 votes

How to be an astrophysicist?

25 votes
Accepted

Was the Sun's gravitational lensing observed in other solar eclipses than the one in 1919?

25 votes

How do we distinguish old craters from new ones on the Moon?

25 votes

Line of lights moving in a straight line, with a few following

25 votes

Which place in the world should be best for astronomy with an optical telescope?

25 votes

How one can establish that the Earth is round?

24 votes

Why are sometimes the brightest star of a constellation not named alpha?

24 votes

Why was the standard distance set to 10 parsec and not simply to 1 parsec?

1 2
3
4 5
56