Ask an Astronomer Team

Ryan Anderson

Ryan is a research fellow at USGS in Flagstaff, AZ and is a member of the Curiosity ChemCam team. He also loves explaining all aspects of astronomy. Check out his blog!

Display #

Title	Created Date	Hits
Has anyone ever seen a star "turn on"? (Beginner)	Aug 07	61076
Why are craters round? (Beginner)	Jul 07	58590
How big is the Hubble Ultra Deep Field image? (Intermediate)	Apr 07	76805
What would happen if a nuclear-powered shuttle exploded? (Beginner)	Feb 07	45573
Does weightlessness affect hunger? (Beginner)	Feb 07	47448
Can artificial gravity be created in space? (Intermediate)	Dec 06	603077
Do asteroids hit the Sun? (Beginner)	Sep 06	89101
If the sun went out and our atmosphere froze solid, what color would it be? (Intermediate)	Sep 06	56654
How do we know the density of some extrasolar planets? (Intermediate)	Sep 06	54168
How do we know what other planets (and stars, galaxies, etc.) are made of? (Intermediate)	Sep 06	193818
Are aliens or UFOs real? (Beginner)	Sep 06	128662
Why hasn't NASA gone back to the moon? (Beginner)	Nov 02	222982