Researchers using the Atacama Large Millimeter/submillimeter Array (ALMA) have, for the first time, achieved a precise size measurement of small dust particles around a young star through radio-wave ...

Eleven years ago today, NASA made an intriguing announcement. Using the Kepler space telescope, the agency had discovered an exoplanet the size of Earth located in the habitable zone of another star.

CAPE CANAVERAL, Fla. (AP/WISH) — For the first time ever, astronomers have discovered seven Earth-size planets orbiting a nearby star – and these new worlds could hold life. NASA made the announcement ...

LOS ANGELES — At least one in every four stars like the sun have planets about the size of the Earth circling them in very close orbits, according to the first direct measurement of the incidence of ...

Two Earth-sized planets orbiting TRAPPIST-1 are locked in permanent day and night, with heat differences suggesting they are ...

A giant planet the size of Saturn orbiting a sun-like star has potentially been identified in our nearest neighbouring stellar system, Alpha Centauri. At just four light years from Earth, Alpha ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of an ice covered rogue planet. New predictions suggest an upcoming NASA space telescope could spot over 400 Earth ...

Planets closer to their stars are easier to find because they transit more frequently. As more data are gathered, planets in larger orbits will be detected. In particular, Kepler’s extended mission ...

Our galaxy may have acquired some new real estate. NASA has discovered an Earth-size planet orbiting around a faraway star — and it could be habitable. Dubbed TOI 700 e, the exoplanet is the fourth ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of a star slowly evaporating an orbiting planet's atmosphere. Helium could make up almost half the mass of the ...