Firefly Sparkle,” a galaxy that existed about 600 million years after the big bang, has been imaged by the James Webb Space ...

This article, originally titled "The Man Who Discovered the Universe," is from the Summer 2025 issue of Air & Space Quarterly ...

Astronomers hunting for evidence of the light from the first stars and galaxies have found that the universe was warm, rather than cold, before it "lit up." ...

The Habitable Worlds Observatory is poised to tell us whether Earthlike planets are common—if it can get off the ground ...

The moon is sometimes called "two-faced" because the surface of its side perpetually facing away from Earth looks so different than its side always facing our planet. And the differences run deeper ...

Hundreds of scientists and engineers, NASA leaders, lobbyists, congressional staffers and Senator Mark Kelly of Arizona are also discussing the search for ET. Surveilling alien worlds for signs of ...

Perseverance represents more than a machine. It is a proxy extending humanity’s senses across millions of miles to an alien ...

Billions of years ago, water flowed across Mars. Most scientists agree the red planet had rivers. But did those rivers flow ...