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.
Methane is such a promising sign for the existence of biological life that it's hard not to get excited when it's detected on Mars. But Amy Shira-Teitel runs down some other ways the gas could be observed on the Red Planet without their being life.
Every year, the Hubble Space Telescope seems to revolutionize our understanding of our vast and beautiful universe. 2014 was no different.
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