The Hercules Cluster (M13), located 25,000 light-years away, is a globular cluster containing over 100,000 stars within a 150 light-year diameter. First documented by Edmond Halley in 1714, its ...

M13, the Hercules Cluster, is a globular cluster of stars. Globular clusters are large, old, and spherical. They orbit the Milky Way differently than open clusters. You can see M13 with a moderately ...

The Great Hercules Star Cluster is one of the true treasures of the summer and early autumn sky. It’s a dense cluster of stars all crammed together in a tight sphere that you’ll love directing your ...

The cluster of four naked-eye planets that have been visible in the morning sky for the past few months - including multiple close conjunctions - is starting to disperse. Saturn, Mars, Jupiter, and ...

If you find yourself in a dark, un-light-polluted area anytime soon, be sure to glance around the sky with binoculars. Along the hazy band of the Milky Way and elsewhere, you’re sure to find plenty of ...

Sometimes we have no clue what's over our heads. On July nights it's easy to find out. As soon as the sky gets dark (around 10:30-11 p.m. local daylight time) look high up in the southeastern sky for ...

Like a whirl of shiny flakes sparkling in a snow globe, Hubble catches an instantaneous glimpse of many hundreds of thousands of stars moving about in the globular cluster M13, one of the brightest ...

If you’ve never seen a planetary alignment in the sky, June is your lucky month. According to Tim Brothers, technical instructor and observatory manager at Massachusetts Institute of Technology, on ...

A gathering of four planets like the one set for Thursday hasn’t happened since 2004, and won’t come around again until 2040. Venus, Saturn, Jupiter and Mars will appear to line up in the sky Thursday ...

Get ready to wake up early Thursday morning if you don’t want to miss a rare planetary alignment. Your next chance won’t come around until 2040 to see this many major planets appear to line up. Venus, ...

Could dying stars hold the secret to looking younger? New evidence from NASA’s Hubble Space Telescope suggests that white dwarf stars could continue to burn hydrogen in the final stages of their lives ...