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Don't miss Mercury, the moon and the Beehive Cluster align in a special August morning sky show
A rare August morning alignment brings Mercury, a thin crescent moon and the Beehive Cluster together in the predawn sky. Here's how you can see it for yourself.
Night sky for tonight: Visible planets, stars and more in this evening's sky
Find out what you can see in the night sky for tonight, from planets and stars to dazzling meteor showers.
On this day in space! Aug. 18, 1868: Total Solar Eclipse Leads to Discovery of Helium
On Aug. 17, 1877, French astronomer Pierre Jules César Janssen discovered helium.
How Much Has Mercury Shrunk?
Mercury is still shrinking as it cools in the aftermath of its formation; new research narrows down estimates of just how much it has contracted.
See a trio of spectacular star clusters brighten the summer sky in August 2025
The Hyades, Pleiades and Hercules star clusters make for excellent targets in the late summer months.
How the nature of environmental law is changing in defense of the planet and the climate
The effects of Earth's changing climate is driving up the number of legal suits related to environmental issues
NASA and Google test AI medical assistant for astronaut missions to the moon and Mars
Google and NASA are trialing an AI-powered medical assistant that could help astronauts care for themselves when mission control is out of reach.
Scientists just recreated the universe's first ever molecules — and the results challenge our understanding of the early cosmos
In a first, scientists have recreated the formation of the first ever molecules in the universe to learn more about early star formation.
