Did Water Crash Into Earth From Space?

Did water crash into Earth from space by way of a massive comet, or was it around long before our planet’s formation? Well, one new study suggests that it might have actually come from the most unlikely source of all: the Sun. » Subscribe to Seeker! » Watch more Elements! » Visit our shop at » Sign Up for Seeker’s Newsletter! Between oceans, glaciers, polar ice caps, and lakes, watery goodness covers almost 71% of Earth’s surface. And that’s pretty special — Earth is the only one of the rocky planets in our solar system with this much water. So when it comes to BIG questions, one of the biggest is where did Earth’s water originally come from? One new study says maybe…the Sun? But to get there, we gotta start a little further back. For decades, planetary scientists and astrobiologists have been building two competing hypotheses for just how Earth got so