100 cool worlds found near the Sun

How complete is our census of the Sun’s closest neighbors? Astronomers and a team of data-sleuthing volunteers participating in Backyard Worlds: Planet 9, a citizen science project, have discovered roughly 100 cool worlds near the Sun—objects more massive than planets but lighter than stars, known as brown dwarfs.

Some Astronomers Think Betelgeuse Dimmed Because it “Sneezed”. And it Might be Getting Ready to do it Again

Betelgeuse, the tenth brightest star in the night sky and the second brightest in the constellation Orion, has been behaving a little oddly lately. Beginning in December of 2019, researchers from Villanova University noticed the red supergiant was dimming noticeably. This trend continued into the new year, with Betelgeuse dimming […]