The vernal equinox occurs as Mercury stands still in Pisces and several of Jupiter’s moons transit in the sky this week.

Considered a solitary star for its lack of stellar companions, Barnard's Star is notoriously lonely—signs of any exoplanets ...

TRAPPIST-1 is a red dwarf star about 40.7 light-years away from Earth. It is of particular interest because it has seven ...

Isabella Castel-branco explores the excitement of planetary alignments, debunking common misconceptions and highlighting the best ways to observe February’s night sky.

The privately-owned lander turned its cameras toward Earth as our planet cast its shadow over the moon. It’s not the first spacecraft to do so.

I pick out North America’s celestial highlights for the weekend ahead (which also applies to northern hemisphere mid-northern ...

Astronomers have detected four small planets orbiting Barnard’s Star, one of the closest stars to Earth, at just six ...