Recent questions in Astronomy

+5 votes

0 answers

If Mars had no atmosphere, would the planet's surface be covered by dust and sand?

asked May 12, 2023 in Astronomy by RadiantNomad

+286 votes

0 answers

How do scientists know if a Galaxy is at the edge of space?

asked May 12, 2023 in Astronomy by johnoosmith

+1 vote

0 answers

What are the positions of the Sun, Moon and Earth in a lunar eclipse and no Moon?

asked May 11, 2023 in Astronomy by NebulaEcho

+232 votes

0 answers

How can the moon be crescent shaped during the day when the sun is up in the sky shining directly on it without the Earth in its path?

asked May 11, 2023 in Astronomy by Christopher Kuch (3.0k points)

+20 votes

0 answers

What is the probability that the sun and moon appear to be the same size in the sky?

asked May 11, 2023 in Astronomy by Dave does Gas

+42 votes

0 answers

What is the Dhruv Star called in English?

asked May 11, 2023 in Astronomy by biffothegrizzly

+243 votes

0 answers

What would happen if all the planets in the universe start revolving in a single orbit around the sun?

asked May 11, 2023 in Astronomy by SamKing

+24 votes

0 answers

Could there be planets on the other side of the Sun that we cannot see because the Sun is always in the way?

asked May 11, 2023 in Astronomy by dragon

+30 votes

0 answers

What would happen if we made contact with a Voyager spacecraft (or any other space probe) outside of our solar system? How would we be able to do that?

asked May 11, 2023 in Astronomy by colmac2000

+112 votes

0 answers

Why can we see the Sun, but we can't see Jupiter since Sun is way far away, and Jupiter is one of the biggest planets in our solar system?

asked May 11, 2023 in Astronomy by dalo

+24 votes

0 answers

What is the brightest star closest to Earth?

asked May 11, 2023 in Astronomy by CrystalScribe

+35 votes

0 answers

What was the star of Bethlehem? Was it a supernova or just an ordinary star? If it wasn't a supernova, then why is it called the “star of Bethlehem”?

asked May 11, 2023 in Astronomy by LunarScribe

+77 votes

0 answers

Why has Pluto been removed from the family of the solar system if Neptune also intersect the orbit of Pluto?

asked May 11, 2023 in Astronomy by Mr GrimNasty

+108 votes

0 answers

In four billion years when the Milky Way slams into the Andromeda, what will happen to all the stars and planets, life, stars, etc. in both galaxies?

asked May 11, 2023 in Astronomy by Walt Systems

+138 votes

0 answers

How do we know the half-life of Uranium 238 is 4.5 billion years if we haven't been around long enough to test it?

asked May 11, 2023 in Astronomy by davidnb

+5 votes

0 answers

What are the main differences between dwarf planets like Ceres and other planets like Mars, Saturn etc.? Why is Pluto classified as a dwarf planet but named as one of the major planet of Solar System while Ceres not?

asked May 11, 2023 in Astronomy by GJR

+109 votes

0 answers

If a protoplanet with earth-sized collide again with Uranus two times, will Uranus gravity get weaker than today and Uranus tilt will become weirdest in the solar system?

asked May 11, 2023 in Astronomy by Paulie1412

+68 votes

0 answers

How long do we see stars that are no longer there?

asked May 11, 2023 in Astronomy by confirmfuneral

+47 votes

0 answers

What astronomical event was not known to men before the advent of the telescope?

asked May 11, 2023 in Astronomy by flateric

+23 votes

0 answers

What causes the night sky to appear to rotate around a central point?

asked May 11, 2023 in Astronomy by David Peckham

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