origin of water on earth

Curious Kids: How was the ocean formed? Where did all the water come from?

 Curious Kids: How was the ocean formed? Where did all the water come from?

On Earth there is more ocean than land. Of course, there is also a lot of water locked up as ice at the North and South Poles. Where all that water came from is a very good question. Scientists have been wondering about it for a long time. We are still not exactly sure but it is probably a combination of two places.

Dramatic change in the moon’s tilt may help us trace the origin of water on Earth

Dramatic change in the moon’s tilt may help us trace the origin of water on Earth

Astronomers have found evidence that the axis that the moon spins around shifted billions of years ago due to changes in the moon’s internal structure. The research could help explain the strange distribution of water ice near the lunar poles – the tilt would have caused some of the ice to melt by suddenly exposing it to the sun while shadowing other areas. It could also help us pinpoint craters that have been shadowed for so long that they contain water ice from early in the solar system.