Our solar system has eight planets, and five officially recognized dwarf planets. Which planet is biggest? Which is smallest? What is the order of the planets as we move out from the Sun? This is a ...

NEW YORK (AP) — A new Tatooine-like planet outside the solar system may orbit two failed stars, scientists reported Wednesday. Located about 120 light years away, the exoplanet appears to take ...

The new moon occurs April 27, and a day later Venus and Saturn will make a close approach to each other (known as a ...

Scientists using the James Webb Telescope have detected a gas on K2-18b that, on Earth, is only produced by living ...

In a potential landmark discovery, scientists using the James Webb Space Telescope have obtained what they call the strongest ...

Scientists have found what they are calling the strongest sign yet of possible life beyond our solar system ... 8.6 times as massive as Earth and has a diameter about 2.6 times as large as our planet.

Scientists are using an array of instruments to detect other planets, some of which may harbor life—and others that most ...

Brown dwarfs are sometimes called failed stars because they’re lighter than stars but heavier than gas giant planets. A light year is nearly 6 trillion miles.

Their latest study, published in The Astrophysical Journal Letters, reports the detection of either dimethyl sulfide (DMS) or ...

Researchers using data from the James Webb Space Telescope recently announced they had detected biosignature gases on planet ...

Scientists have detected what they believe to be a potential sign of life on a planet in a different solar system in the ...