Supermassive black holes (SMBH) occupy the center of galaxies, with masses ranging from one million to 10 billion solar masses. Some SMBHs are in a bright phase called active galactic nuclei (AGN). AGNs will eventually burn out since there is a maximum mass limit for SMBHs; scientists have long since […]

A seismic station on the Greenland Ice Sheet installed by authors. Snow accumulation in one year is ~1.5 m, and the solar panels are buried in the snow. Snow removal and maintenance are done manually by several people. Credit: Genti Toyokuni A team of researchers understands more about the melting […]