A nearby star system with two suns could potentially support an Earth-sized planet in a region where liquid water could exist, according to a new paper examining the dynamics of the system.

Just 16 light-years from Earth, a pair of stars could provide a stable home for a planet resembling our own. A new study ...

Add Yahoo as a preferred source to see more of our stories on Google. It's a scientific first: the discovery of an atmosphere around an Earth-like planet in the habitable zone. Now, if that sounds ...

Add Yahoo as a preferred source to see more of our stories on Google. Concept design for a rectangular space telescope, modeled after the Diffractive Interfero Coronagraph Exoplanet Resolver (DICER), ...

As far-fetched as it may seem, quirks of orbital mechanics could allow hundreds of planets to be packed around a star ...

Mars is the obvious frontrunner, but it is far from an easy second home. The other candidates reveal just how rare truly human-friendly conditions may be.

Larger than Earth, covered in shallow seas and orbiting long-lived orange stars, these hypothetical worlds could provide ...

Finding Earth-like planets orbiting sun-like stars and identifying signs of life such as oxygen or water is a major goal in astronomy and a key interest for the public. Addressing this challenge ...

Most scientists think that Earth and Mars took shape this way from rocky pieces swirling around the young sun around 4.5 ...

Scientists believe there are planets outside our solar system where life is even more abundant and sustainable.

So far, astronomers have discovered some 145 so-called extrasolar planets orbiting stars besides our sun. All are gas giants like Jupiter, thought to be inhospitable to life as it is known on Earth.

Earth and Mars grew up as neighbors around the young Sun, but they may not have been built the same way. Most of Earth’s mass ...