More information: Richard C. Greenwood et al. Oxygen isotopic evidence for accretion of Earth's water before a high-energy Moon-forming giant impact, Science Advances (2018).DOI: 10.1126/sciadv ...

The findings may help explain how Earth's surface ended up covered in water. New measurements from the Herschel Space Observatory show that comet Hartley 2, which comes from the distant Kuiper ...

Theories suggest that Earth actually formed as a dry planet in the inner solar system so shouldn't have had any water on it at all. Before this ... were essential to the creation of life Earth.

It was therefore suggested that water might come from space rocks rich in hydrogen or covered with ice ... have been part of its structure before it arrived on Earth. Co-author Dr James Bryson ...

new video loaded: Did Asteroids Bring Water to Earth? transcript [music] What you just saw is a re-creation of an asteroid ... About 70% of its surface is covered with it. But where did it come ...

Now it looks as if one part of this ancient creation myth has ... suggests our planet was once a ‘water world’. Nowadays, the most famous depiction of Earth without landmasses is the post ...

Only after the so-called Late Heavy Bombardment quieted some 3.9 billion years ago did Earth finally start to morph into the Edenic, cloud-covered ... oceans of water, and maybe even an atmosphere.

Areas in green show where water has turned ... the water on the Earth's surface has changed over 30 years. They found that 115,000 sq km (44,000 sq miles) of land is now covered in water and ...

Earth simply wouldn’t be the home planet we know and love without water—after all, 70 percent of our planet’s surface is covered with ... deep inside the earth before being released to ...

While modern Earth’s surface is about 70 percent water-covered, the new research indicates that our planet was a true ocean world some 3 billion years ago. At this point, only scattered ...

With sea level rising and ice caps melting, it’s easy to believe that more of Earth’s land is covered by water every year ... changes had never been mapped before, such as the damming of ...