How did massive elliptical galaxies appear so early after the Big Bang
Four galaxies crowd the center of a collapsing structure 1.4 billion years after the Big Bang. Each one…
Physicists propose a new way to spot supermassive black hole pairs
Supermassive black holes rarely travel alone. Most large galaxies hide one at the center, and when galaxies collide,…
NASA, Partners Advance LISA Prototype Hardware
Engineers and scientists at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, completed tests this month on a…