Jay M. Pasachoff, Chair of the Astronomy Department, Director of the Hopkins Observatory, and Field Memorial Professor of Astronomy at Williams College in Williamstown, Massachusetts, succumbed to cancer on Sunday morning, November 20th.
Plakha Alexander — amateur astronomer, owner of Astro-Gadget.net, and Ukrainian — shares his experiences since Russia's invasion began.
Concerned about light pollution? Join a virtual conference this weekend that looks at ongoing global efforts to mitigate it.
See photos — some familiar and some rarely seen — from the Apollo 15 mission, which launched place 50 years ago today.