In fall and winter, the Pleiades and Hyades star clusters brighten our nights. Both are plainly visible without optical aid even from the suburbs. And every spring ...

This new image from the MPG/ESO 86.6-inch (2.2-meter) telescope at La Silla Observatory in Chile, shows the bright star cluster Messier 7, also known as NGC 6475. Easily spotted with the naked eye in ...

"A nova is a sudden stellar eruption where, in just a few days, a star’s brightness increases by a factor of 10,000," NASA explains. "Then over the following months the outburst fades away and the ...

July is the best time of the year to observe two distant star clusters that are relatively close to each other. Given their close proximity to the constellation Scorpius, these two star clusters are ...

Our summer sky is bespangled with hundreds of sparkling open star clusters. One of the finest is M7 in Scorpius. It lies just 5° east-northeast of the Scorpion’s stinger stars: Shaula (Lambda [λ] ...