Space on MSN

How Big Are Supermassive Black Holes?

NASA compares the universe's biggest black holes with "each other and to our solar system," in this Goddard Space Flight ...
AZoQuantum on MSN

ESO Technique Creates Artificial Stars for Precise Astronomical Measurement

Four lasers were directed into the skies above the European Southern Observatory's (ESO) Paranal facility in Chile. Each ...