Planet GJ1132b is about the size of Earth, has a fairly thick atmosphere, and is only 39 light years from Earth.
Specifically, this planet, named GJ1132b, is 1.2 times the size of Earth, mostly made up of rock and steel. It is the closest object to Earth among the rocky extrasolar planets that humans have discovered so far.
This means that it is an uninhabitable planet. However, according to David Charbonneau, astronomer at the Harvard-Smithsonian Center for Astrophysics (USA), the planet is still “cold” enough to survive in a relatively dense atmosphere.
Early forecasts suggest that the planet’s atmosphere is mostly made up of helium and hydrogen. But if the planet had water in the past, its atmosphere could contain oxygen. However, scientists say this is not certain.
In essence, the planet is like Venus in the solar system, Charbonneau said. He humorously shared, “We want to find Earth 2, but it’s more like Venus’ twin brother.”