Our sun is a loner. It lacks a stellar companion hurtling through interstellar space with it. But we've known for a long time that that's actually relatively rare—most stars have at least one ...

Massive stars much bigger than our sun always come in pairs or groups, not alone. But astronomers don't fully understand how these groupings form. In a new study, astronomers using ALMA have ...

A research team, led by Brian P. Powell at the NASA Goddard Space Flight Center, has discovered a new triple-star system using the sharp vision of the Transiting Exoplanet Survey Satellite (TESS). The ...