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	73698
Why are craters round? (Beginner)	Jul 07	70811
How big is the Hubble Ultra Deep Field image? (Intermediate)	Apr 07	101278
What would happen if a nuclear-powered shuttle exploded? (Beginner)	Feb 07	56222
Does weightlessness affect hunger? (Beginner)	Feb 07	58243
Can artificial gravity be created in space? (Intermediate)	Dec 06	696113
Do asteroids hit the Sun? (Beginner)	Sep 06	110073
If the sun went out and our atmosphere froze solid, what color would it be? (Intermediate)	Sep 06	70897
How do we know the density of some extrasolar planets? (Intermediate)	Sep 06	65640
How do we know what other planets (and stars, galaxies, etc.) are made of? (Intermediate)	Sep 06	218753
Are aliens or UFOs real? (Beginner)	Sep 06	142235
Why hasn't NASA gone back to the moon? (Beginner)	Nov 02	237677