The overwhelmingly large brightness of the galaxies within a foreground cluster, like Abell S1063, shown here, make it a challenge to use gravitational lensing to identify ultra-faint, ultra-distant background galaxies. Image credit: NASA, ESA, and J. Lotz (STScI).

Professional Disagreement Over Galaxies Escalates Into Bullying And Harassment

No matter what the science says, there’s no excuse for cruel behavior to a colleague.

Ethan Siegel
Nov 17, 2017 · 7 min read

Look out into the distant Universe as far as you possibly can, and you’ll come to the earliest galaxies we’ve ever observed. The Hubble Frontier Fields program was designed to make exactly…