Magazine | Page 184 of 283 | Astronomy.com

Does the Hubble Space Telescope actually take a number of sub-exposures and then stack them? If so, how long are typical sub-frames?

Ask Astro web extra: What was the size of the universe immediately before and after inflation?

Bob Berman’s Strange Universe: No jovial refund

Why doesn’t our solar system contain any moons orbiting a moon?

David H. Levy’s Evening Stars: Nature reaches for the stars

A wide-field photo gallery

What does “maximum usable” magnification mean?

Stephen James O’Meara’s Secret Sky: Back from the dead

Titan up close

How do you distinguish between absorption lines that originate in a distant astronomical object and those from Earth’s atmosphere?

Kepler, the man

Have scientists thought of what type of universe would evolve if physical constants had different values?