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	54247
Why are craters round? (Beginner)	Jul 07	52183
How big is the Hubble Ultra Deep Field image? (Intermediate)	Apr 07	67962
What would happen if a nuclear-powered shuttle exploded? (Beginner)	Feb 07	37447
Does weightlessness affect hunger? (Beginner)	Feb 07	41832
Can artificial gravity be created in space? (Intermediate)	Dec 06	526045
Do asteroids hit the Sun? (Beginner)	Sep 06	79286
If the sun went out and our atmosphere froze solid, what color would it be? (Intermediate)	Sep 06	50242
How do we know the density of some extrasolar planets? (Intermediate)	Sep 06	48857
How do we know what other planets (and stars, galaxies, etc.) are made of? (Intermediate)	Sep 06	173611
Are aliens or UFOs real? (Beginner)	Sep 06	102846
Why hasn't NASA gone back to the moon? (Beginner)	Nov 02	214482