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Pulsars are 'cosmic lighthouses' that when seen from Earth appear to be flickering stars, but actually consist of exotic stellar remnants called neutron stars.

Astronomers have discovered a stellar binary with what appears to be an extremely short orbit of 51 minutes. The system seems to be a “cataclysmic variable,” in which a star like our sun tightly orbits a white dwarf.

Stars in their "young years" are a major challenge for science

Not only humans try to look younger than they really are – stars do, too. This is what an international team of astronomers investigates in their paper that was just published in Nature Astronomy. 

The cause of Earth’s deepest earthquakes has been a mystery to science for more than a century, but a team of Carnegie scientists may have cracked the case. New research published provides evidence that fluids play a key role in deep-focus earthquakes—which occur between 300 and 700 kilometers below the planet’s surface. The research team includes Carnegie scientists Steven