For one, scientists observe a "cosmic fossil" called the cosmic microwave background (CMB). The first light that was free to ...

Baryon acoustic oscillations (BAOs) – the “sound of the Big Bang” – support the idea of a local void. Gabriela Secara, ...

The bold question-askers at What If search for answers about whether Super-Earths could become humanity’s new home.

Images of the cosmos, such as the James Webb Space Telescope’s deep space snapshot, make space look chock-full of stuff. In ...

How did Earth, alone among the solar system's rocky planets, become the home for life? How, among all this frigid ...

NASA astronaut Nichole Ayers photographed a rare atmospheric phenomenon over the US and Mexico known as a "sprite" that's ...

A study of fossils from the Permian-Triassic extinction event 252 million years ago shows that forests in many parts of the ...

The quintessential superhero has always stood for truth and justice, but the final part of his catchphrase has morphed to ...

But in the comic's early years, it was a young Superboy who officially created the design, saying, "I chose this symbol not only to stand for Superboy, and later Superman – it will also mean Saving ...