Two million years ago, an encounter with a cold cloud of gas and dust could have caused our planet's "protective giant bubble" to draw back, potentially cooling our planet, new research claims. When ...

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Scientists think Earth may have undergone at least two extreme freeze events throughout its history, becoming a so-called “snowball Earth” with a surface covered by ice. What triggered these events is ...

Historical observations of the Moon's motion, dating back to ancient civilizations, played a crucial role in the development of timekeeping and calendar systems. The Moon's orbital cycle can be ...

Earth just got a new tag-along in space — a little asteroid named 2025 PN7. NASA confirmed this week that the rock, discovered by the University of Hawaii, is officially a “quasi-moon” — a rare type ...

Simulations and satellite data reveal that Earth's magnetic field is more complex than scientists had thought. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

Astronomers have discovered an Earth-size planet that is showered with so much radiation, its atmosphere eroded away long ago, leaving it bare. Life as we know it can't exist on this blistering world, ...

Scientists discovered 128 new moons orbiting Saturn, bringing the planet’s total to 274. Many of these moons are “only a few ...

A growing number of researchers in the field are using their expertise to fight the climate crisis. By Katrina Miller and Delger Erdenesanaa On the morning of Jan. 18, 2003, Penny Sackett, then ...

A look at the most-read space stories of 2025, covering satellite activity, space missions, scientific discoveries, and natural events observed from Earth ...

Rogue planets — worlds that drift through space alone without a star — largely remain a mystery to scientists. Now, ...