Ask Astro | Page 18 of 20 | Astronomy.com

How large a body would it take to make a crater as wide as the Gulf of Mexico?

Why hasn’t NASA flown a microphone to Mars? Will future probes, to places like Europa, carry audio sensors?

Why do physicists think gravity travels at the speed of light?

When a gravitational lens magnifies a background galaxy, why don’t we see the object doing the lensing, as we would if looking through an optical lens?

Can we turn Minuteman missiles into cheap launchers to deliver small payloads to the Moon and Earth-passing asteroids?

If neutron stars don’t produce energy from fusion, like normal stars, how can they shine in visible light?

The Celestron AstroMaster 102AZ is a best telescope for beginners.

Telescopes and Equipment

How do I tell if a telescope I want to buy is good quality?

Robotic Spaceflight

Whatever happened to the Voyager spacecraft?

If we lived on a planet circling a star about to go supernova, would we know it was going to happen?

Would you name the Full Moons of the year and explain each name?

How do astronomers use Cepheid luminosities to calculate distances?

How long does it take for a white dwarf to turn into a black dwarf?