Summer Ash
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.
  Slate Plus
Slate Plus
April 17 2015 11:37 AM What Happened at Slate This Week? Chad Lorenz talks about running the home page, writing headlines, and his favorite picks from the magazine this week.