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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, 8 months
  • Last seen this week
43 votes

Why is Uranus called a "green planet"?

42 votes
Accepted

Intuition about why gravity is inversely proportional to exactly square of distance between objects

42 votes

Why do things float in space, though the gravity of our star is always present?

42 votes
Accepted

Is it suspicious that gravitational waves propagate at the speed of light?

42 votes
Accepted

Why is time referred to as "The" capital T 4th dimension?

41 votes

Can a planet with no atmosphere be orbited at extremely low altitudes?

40 votes

What was the large green yellow thing streaking across the sky?

40 votes

What happens to the 99.9 % of the sun-rays that do not fall on any planets or any other celestial body?

39 votes
Accepted

Why doesn’t the Sun fill the sky on Mercury?

38 votes

Do celestial objects need to be big to have liquid water on their surfaces?

38 votes

Could we detect the light of cities at night in other solar systems?

38 votes

What would happen to a polished marble statue left in space for a million years?

37 votes

Is Venus' north towards Earth's south

37 votes
Accepted

Is our sun in a star cluster?

36 votes

Is Jupiter's Red Spot "locked in place" or does it move around?

35 votes
Accepted

Does this photo show the "Little Dipper" and "Big Dipper"?

35 votes
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Why do satellites appear as streaks in telescope images?

35 votes

Is the science in "Don't Look Up" realistic?

35 votes
Accepted

How can many stars be formed from the remains of one supernova?

35 votes
Accepted

Can a very powerful telescope show a person standing on the moon from the side rather than from directly overhead?

34 votes

Why is the Moon's orbit so complicated?

34 votes
Accepted

How can I measure the angle between two stars?

34 votes
Accepted

Why are fewer stars seen next to the horizon?

34 votes
Accepted

Is it possible to do planet observation during the day?

33 votes
Accepted

Is it possible to have a stable 3 body system that orbits in a perfect circle?

33 votes
Accepted

How did Ole Christensen Romer measure the speed of light?

32 votes
Accepted

Are there only $10^{83}$ atoms in the universe?

32 votes

Why are perihelion and the shortest day in the northern hemisphere different?

32 votes
Accepted

How do I know it is safe to remove eclipse glasses when viewing a total solar eclipse?

32 votes
Accepted

Is it possible that the Rosetta orbiter moved the comet when it crashed?

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