Earth-like water, like that in the oceans, has been found on comet Hartley 2.
The dirty snowballs known as comets might be the sources of Earth's water after all, scientists say. Water is critical to life on Earth — life is found virtually wherever there is water on our planet.
Now researchers find that water seen in Comet Hartley 2 is very close to Earth's, with about 1,610 deuterium atoms per 10 million regular hydrogen atoms...
Via Xè Simò