Summer Ash

Summer Ash is director of outreach for Columbia University’s astronomy department and the in-house astrophysicist for The Rachel Maddow Show. Follow her on Twitter.

Mysteries of the Universe
Feb. 20 2014 11:19 AMWhere Do Galaxies Come From?Cosmic harassment, stripping, strangulation, and cannibalism.
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Slate Picks
Dec. 19 2014 4:15 PM What Happened at Slate This Week? Staff writer Lily Hay Newman shares what stories intrigued her at the magazine this week.