"What If is an epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a ...

So, trying to land on it would be like trying to land on a cloud here on Earth ... mph under the pull of Jupiter's gravity. But brace yourself. You'll quickly hit the denser atmosphere below ...

"What If is an epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a ...

You'll quickly hit the denser atmosphere ... At 13,000 miles down, you reach Jupiter's innermost layer. Here the pressure is 2 million times stronger than at Earth's surface.

When Jupiter was young, about 4.5 billion years ago, a protoplanet with 10 times the mass of Earth crashed head-on ... goes through the atmosphere and hits the core head-on," Isella said.

Previous research claimed that the rock was a “long-period” comet from the Oort Cloud—an icy sphere of debris around the outer solar system—and that Jupiter caused it to hit Earth.