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	62771
Why are craters round? (Beginner)	Jul 07	60224
How big is the Hubble Ultra Deep Field image? (Intermediate)	Apr 07	79152
What would happen if a nuclear-powered shuttle exploded? (Beginner)	Feb 07	47141
Does weightlessness affect hunger? (Beginner)	Feb 07	48841
Can artificial gravity be created in space? (Intermediate)	Dec 06	624546
Do asteroids hit the Sun? (Beginner)	Sep 06	91629
If the sun went out and our atmosphere froze solid, what color would it be? (Intermediate)	Sep 06	58397
How do we know the density of some extrasolar planets? (Intermediate)	Sep 06	55585
How do we know what other planets (and stars, galaxies, etc.) are made of? (Intermediate)	Sep 06	197754
Are aliens or UFOs real? (Beginner)	Sep 06	131204
Why hasn't NASA gone back to the moon? (Beginner)	Nov 02	224774