Kepler-62f, an Earth-like planet, is considered a possible habitat for life. It might resemble Endor, with lush forests and life-supporting conditions.

Nor were these worlds all small like our inner planets. The most common planets seen by Kepler have a radius between Earth’s and Neptune’s — unlike any planet in the Solar System.

Astronomers from MIT, the University of Liège in Belgium, and other institutions have stumbled upon a truly bizarre planet—an ...

Among the roughly 10 billion white dwarf stars in the Milky Way galaxy, a greater number than previously expected could ...

Keep your eye on the ball” is a motto for many athletes—and for astronomers trying to find Earth-threatening space rocks ...

Scientists work to define a “habitable zone,” which means that if it’s too close to a star, the water heats and evaporates, and too far, it freezes. Also, the atmospheric conditions need to be just ...

Although the occurrence climaxed on Jan. 21 with a conjunction—close alignment—of Saturn and Mercury, the planetary parade ...