Could Gaia’s immense catalog of stellar positions help us find extraterrestrial intelligence?
Globular clusters in the Milky Way are shedding their stars. How can we tell when this process began?
Earth life has a definite preference for particular kinds of molecules. Where did life get its taste for left-handed amino acids?
Comet D/Lexell has been lost to memory since its discovery in 1770. Can modern astronomical methods track it down?
In or out? Today’s paper explores whether or not an unusual object belongs to the AB Doradus moving group—and what it means if it does.