the University of Maryland, College Park, Author at Astronomy.com

Scientists find “birthmarks” from Earth’s infancy

Astronomers identify a new mid-sized black hole

Robotic Spaceflight, Solar System

Rosetta spacecraft sees sinkholes on comet

Pulsing light may indicate supermassive black hole merger

A new view of the Moon’s formation

Alien Life, Exoplanets, Planets

Major milestone in the search for water on distant planets

Robotic Spaceflight, Solar System

Closest-ever comet orbiter streams data from bi-lobed “rubber ducky”

Deep-Sky Objects, Exotic Objects

Fascinating rhythm: light pulses illuminate a rare black hole

Exoplanets, Planets, Solar System

Meteorites yield clues to Red Planet’s early atmosphere

Science, Solar System

New study shows earthly gold came from ‘alien’ bombardment

Robotic Spaceflight, Space Exploration

Primordial dry ice fuels comet jets