NASA has unveiled the complete set of data from the first four years of the agency’s Kepler Space Telescope mission, which stared at a single patch of the sky in the search for alien planets.
The result: Kepler has discovered 219 new candidates since NASA’s last data unveiling, including 10 near-Earth-size planet candidates in the so-called habitable zone around their stars where the conditions are just right for liquid water to exist on a planet’s surface — a key feature in the search for habitable worlds.
The new discoveries boost Kepler’s total to 4,034 candidate planets during its mission, 2,335 of which were later confirmed by follow-up observations, NASA officials said in a statement. The 10 newfound potentially Earth-size worlds bring Kepler’s total up to 50 of that type of exoplanet, with more than 30 of those being confirmed, NASA officials said during a briefing today (June 19).
The researchers also revealed a surprising divide between small, Earth-like planets and mini-Neptunes gleaned from the data.