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	46269
Why are craters round? (Beginner)	Jul 07	44286
How big is the Hubble Ultra Deep Field image? (Intermediate)	Apr 07	58441
What would happen if a nuclear-powered shuttle exploded? (Beginner)	Feb 07	30032
Does weightlessness affect hunger? (Beginner)	Feb 07	35498
Can artificial gravity be created in space? (Intermediate)	Dec 06	437252
Do asteroids hit the Sun? (Beginner)	Sep 06	68895
If the sun went out and our atmosphere froze solid, what color would it be? (Intermediate)	Sep 06	43687
How do we know the density of some extrasolar planets? (Intermediate)	Sep 06	42365
How do we know what other planets (and stars, galaxies, etc.) are made of? (Intermediate)	Sep 06	147855
Are aliens or UFOs real? (Beginner)	Sep 06	88991
Why hasn't NASA gone back to the moon? (Beginner)	Nov 02	197933