Discovered: Earth-like planet that could host life, just 20 light-years
A team of astronomers has discovered GJ 251 c, a strong exoplanet candidate, a rocky planet about four times heavier than Earth, orbiting a red dwarf star just 18-20 light-years away in Gemini.
What's exciting? It sits in the star's habitable zone—meaning liquid water might exist there if the planet has the right atmosphere.
The discovery was published this week in The Astronomical Journal.
Best chance at finding life beyond Earth
Because of its size, rocky makeup, and perfect spot for possible water, GJ 251 c is now one of the best places to search for signs of life beyond Earth.
As Penn State's Suvrath Mahadevan put it, "We look for these types of planets because they are our best chance at finding life elsewhere."
How was it discovered?
Researchers spotted GJ 251 c using the radial velocity method (basically tracking tiny wobbles in its star).
Since it doesn't pass directly in front of its star from our view, future super-telescopes like the Extremely Large Telescope will be needed to get a closer look and check its atmosphere for any hints of life.