Mars may have been a "blue planet" with an ocean the size of today's Arctic Ocean, a new study suggests.

"The structures that we were able to identify in the images are clearly the mouth of a river into an ocean." The post ...

About 700 million years ago, Earth was entombed in a veneer of ice hundreds of feet thick—a frozen state scientists refer to as “Snowball Earth.” Oceans cooled but managed to retain some heat to avoid ...

“The presence of liquid water [on Mars] is a broad topic that includes rains, rivers, lakes, as well as oceans,” says Ezat ...

Narrow bands of ocean covering just over one-third of the world's seas are responsible for absorbing nearly three-quarters of ...

"Most excitingly, this new idea addresses one of the longstanding habitability problems on Europa and is a good sign for the ...

In late 2025, scientists reported that for the first time, they were able to detect concentrations of plastic pollution on ...

Researchers have discovered that chemical reactions in underwater hydrothermal vents could have produced the necessary ...

Marine microbes cooperate far more than they compete, reshaping how scientists understand ocean ecosystems and climate ...

"A strong magnetic field is very important for life on a planet." ...