If this theoretical second planet in the system is confirmed, it would become the smallest habitable-zone planet discovered by TESS, NASA's exoplanet-detecting satellite.

NASA announced a major milestone in the quest for life in the universe Monday: The discovery of another planet close enough to the sun it orbits to potentially support life. Called Kepler-22b, the ...

The hunt is on for a second Earth, somewhere out there in the Milky Way galaxy, but a newly discovered world is not quite the thing. It comes in at around 1.9 times the mass of Earth, orbiting its ...

Scientists studying data from the Alpha Centauri star system on Wednesday announced what they believe is a second Earth-like planet orbiting the star closest to the sun.The finding, announced via ...

The planet, dubbed Kepler-22b, has a radius 2.4 times that of Earth and is 600 light years away, according to NASA. It's the first planet confirmed to be in a "habitable zone," a region around a ...

Kepler-1649c is located 300 light-years from Earth. NASA described it as the "most similar to Earth in size and estimated temperature" out of the thousands of exoplanets discovered by Kepler.

NASA/Goddard Space Flight Center. "Planetary system's second Earth-size world discovered." ScienceDaily. ScienceDaily, 10 January 2023. <www.sciencedaily.com / releases / 2023 / 01 / 230110151046 ...

The first discovery of a second Earth will likely be another watershed moment for her and many, she said. "An Earth analogue has different implications," she said.