Look west just after sunset from this weekend for a chance to see some of six planets, though the best views will be had later this month.

The similarities are astonishing. And yet... The post NASA Telescope Discovers Nearby Planet With Deep Similarities to Earth ...

Every once in a while, the mechanics of our solar system grant Earth and its residents a better-than-average view, as is the ...

A newly identified Earth-sized exoplanet with a year-long orbit may lie near its star’s habitable zone, but extreme cold could limit its chances of hosting liquid water.

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.