“The presence of liquid water [on Mars] is a broad topic that includes rains, rivers, lakes, as well as oceans,” says Ezat ...
New evidence of ancient rivers suggests Mars may have been a "blue planet," thanks to an ocean spanning its entire northern ...
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NASA finds most Earth-like planet yet as Kepler 452b hints at alien life
When astronomers announced Kepler-452b, they were not just adding another distant world to a growing catalog. They were ...
Ancient shoreline features hint that water on Mars once formed a vast ocean.
Evidence from fossil shells suggests that falling seawater calcium helped lock away carbon dioxide and helped cool Earth after the dinosaurs.
Our planet is unique for its ability to sustain abundant life. From studies of the rock record, scientists believe life had already emerged on Earth at least 3.5 billion years ago and probably much ...
P arts of the ocean reached temperatures of -15°C (5°F) without freezing 717-660 million years ago, geologists and geochemists have concluded. These conditions explain some puzzling banded iron ...
The last ice age did not shut down Atlantic ocean currents, and that discovery may help explain future climate risks.
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