Nearly three-fourths of Earth is covered by oceans, making the planet look like a pale blue dot from space. But Japanese researchers have made a compelling case that Earth's oceans were once green, in ...

A prehistoric carbon spike turned oceans deadly and wiped out marine life. Scientists say today’s CO₂ rise could cause the ...

For most of human history, Earth has been known as the “Pale Blue Dot,” a term popularized by astronomer Carl Sagan when referring to the iconic 1990 image taken by Voyager 1. But for billions of ...

NASA confirms the existence of TOI‑1846 b, a nearby hot super-Earth that could contain water, initially observed by NASA's ...

Earth's oceans, known for their deep blue hue, could one day undergo color shifts, say scientists.

Nearly three fourths of Earth is covered by oceans, making the planet look like a pale blue dot from space. But Japanese researchers have made a compelling case that Earth's oceans were once green ...

The alien world orbits a dim, reddish ball of gas called a red dwarf star in the northern constellation Lyra. Scientists ...

On Earth, water is so intertwined with life that our search for life on other worlds is essentially a search for water. When ...

"This has profound implications for how we interpret surface volcanism, earthquake activity and the process of continental ...

New study reveals Earth's oceans were once green due to iron and cyanobacteria. Could sulfur levels turn them purple in the future?

Future Shifts As the sun brightens and oxygen vanishes again, Earth’s oceans could turn purple, red, or even brown—life shifting in color once more.