She mapped our solar system's "alternate fate" had it housed an extra ... formation of a planet that is at least twice the size of Earth's mass—a super-Earth—instead of an asteroid belt.

Opinions expressed by Forbes Contributors are their own. Jamie Carter is an award-winning reporter who covers the night sky. Computer simulations suggest that there is an undiscovered Earth-like ...

The space rock is heading in our direction at some 18,700 miles per hour, according to the space agency's data.

and may even have provided the right conditions for life on Earth. But as far as we know, no other bodies in the solar system exhibit plate tectonics today. Why is our world different?

and Bennu’s samples are pivotal in our understanding of what ingredients in our solar system existed before life started on Earth.” If that wasn’t enough, another team—led by meteorite ...

With a radius of 3,959 miles, Earth is the fifth largest planet in our solar system, and it's the only one known for sure to have liquid water on its surface. Earth is also unique in terms of ...