According to a new study published this week in the Monthly Notices of the Royal Astronomical Society, a phenomenon called ram-pressure stripping is more prevalent than previously thought. An artist’s impression showing the increasing effect of ram-pressure stripping in removing gas from the spiral galaxy NGC 4921 and its satellite galaxies. Image credit: ICRAR / NASA / ESA / Hubble Heritage Team / STScI / AURA. The study of 10,567 galaxies shows...