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
Medical Examiner
March 27 2015 5:16 PM What Happened at Slate This Week? Alison Griswold describes her experience reporting on the Germanwings tragedy.