Recent questions in Astronomy

+261 votes

0 answers

Why does the moon go through phases throughout the month?

asked Feb 18, 2023 in Astronomy by Halfaudio

+3 votes

0 answers

Would it be fun to be a shooting star?

asked Feb 18, 2023 in Astronomy by Alkad

+46 votes

0 answers

Is it possible to refuel a spacecraft while it is still in orbit around Earth, or must fuel levels always be topped up before launch both safely and effectively?

asked Feb 18, 2023 in Astronomy by StellarAlchemy

+11 votes

0 answers

If an astronaut on the moon ended up with a one centimeter hole in his suit but was right next to the lunar lander, would he be able to make it in before he runs out of oxygen?

asked Feb 18, 2023 in Astronomy by ayersy_612

+16 votes

0 answers

What is it called when the Sun and the Moon are in the sky together?

asked Feb 18, 2023 in Astronomy by Mudster - www.atston

+13 votes

0 answers

If Earth and Mars were in the same orbit, which is faster, Earth or Mars?

asked Feb 18, 2023 in Astronomy by Rocker

+7 votes

0 answers

How much does it cost to travel to other planets? Why is this cost so expensive compared to the cost of sending a person into orbit around Earth?

asked Feb 18, 2023 in Astronomy by retired Tom

0 votes

0 answers

Does Earth rotate around itself? If so, which side of Earth is moving towards space and which side away from space?

asked Feb 18, 2023 in Astronomy by Rob_bv

+26 votes

0 answers

How do asteroids emit light? Can you provide references?

asked Feb 18, 2023 in Astronomy by Javageddon

+223 votes

0 answers

What is the minimum mass needed for a planet to have surface gravity?

asked Feb 18, 2023 in Astronomy by QuantumHorizon

+70 votes

0 answers

What are some things that happened outside of Earth’s observable solar system and Galaxy?

asked Feb 18, 2023 in Astronomy by terrymac

+151 votes

0 answers

How big is the Milky Way compared to the sun?

asked Feb 18, 2023 in Astronomy by halalooyer

+71 votes

0 answers

Can planets' orbits last forever or are they inevitable going to stop at some time? Whenever we have an astronomical object orbiting another one (eg the Earth and the Sun) can the orbit last forever, or will it inevitably stop?

asked Feb 18, 2023 in Astronomy by moss42

+2 votes

0 answers

How come the age of our solar system is different from that of its star, The Sun?

asked Feb 18, 2023 in Astronomy by Daisy07

+8 votes

0 answers

What benefit do stars provide to life on Earth?

asked Feb 18, 2023 in Astronomy by georgemcintyre

+22 votes

0 answers

What is inside the red hole of Jupiter?

asked Feb 18, 2023 in Astronomy by Allhours

+496 votes

0 answers

Can we explain why we often see ships disappear bottom-first over the horizon, as if sinking into an apparent curvature, but then they reappear fully visible with the aid of telescopes or zoom lenses? What causes this optical phenomenon?

asked Feb 18, 2023 in Astronomy by tw

+11 votes

0 answers

Does our solar system rotate around the Milky Way Galaxy or does it move through space?

asked Feb 18, 2023 in Astronomy by diyer1

+10 votes

0 answers

How do you write 'the Earth' or 'the Sun' in a sentence?

asked Feb 18, 2023 in Astronomy by Shaun courty

+7 votes

0 answers

How many asteroids are there in the solar system? Why didn’t NASA send spacecraft to more of them instead of just Ceres and Vesta?

asked Feb 18, 2023 in Astronomy by SrewcFix

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