As Ceres and Pluto slowly come into view, take a look back at what we thought these worlds would look like up close.
Most of us kind of get that the Earth is spinning and lots of other stuff out there is doing the same. Fair enough, but ... WHY?
Astronomers have found an ancient, more compact version of our solar system, which could have implications for the search of extraterrestrial life.
Ceres is an embryonic planet that had the misfortune of seeing Jupiter crush its dreams of becoming a legit planet on its own. But the more scientists learn about the plucky dwarf, the more they like it.
A new study suggests that at least two more planets are circling the sun far beyond Pluto’s orbit.
NASA's Kepler spacecraft has discovered its 1,000th alien planet, further cementing the prolific exoplanet-hunting mission's status as a space-science legend.
After carefully measuring the masses of small, rocky exoplanets, astronomers have come to the conclusion that our solar system may not be unique.
Venus may have once possessed strange oceans of carbon dioxide fluid that helped shape the planet's surface.
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