This is likely to be a rocky planet, not a gas giant.

Earth mass is often used to describe masses of rocky terrestrial planets.

The star is some 50 million to 250 million years old, young enough so that any rocky planets there may still be forming.

Once heat from the sun gets to the surface of the rocky planet, a lot of it is trapped there.

It is then presumed a star needs to have rocky planets within its habitable zone.

Its mass indicates it is probably a rocky planet with a solid surface.

Humanity on a rocky planet, trying to tend a biosphere.

"All we know about life is that it can arise on rocky planets like the earth," Basri says.

Why did rocky planets form closer to the sun and the gas giants farther away?

This mission will also discover how frequently these rocky planets occur.