Anyone who grew up learning that our solar system has nine planets probably remembers the moment Pluto got demoted. That ...

In 1958, the National Aeronautics and Space Act founded the National Aeronautics and Space Administration (NASA). Its founding came at an opportune time, and not just because of the Space Race against ...

A team of astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) has captured a massive stream of gas—one trillion miles, or 0.2 light-years, long—feeding the young triple-star ...

GJ 3090 b, a sub-Neptune about 2. 18 times Earth’s radius, follows a strongly misaligned retrograde orbit around its small ...

What can rocky planets orbiting in the outer parts of a solar system teach scientists about planetary formation and evolution? This is what a recent study published in Science hopes to address as a ...

What new methods can be used to find long-period exoplanets, or exoplanets with orbits lasting from months to decades? This is what a recent study published in The Astronomical Journal hopes to ...

Add Yahoo as a preferred source to see more of our stories on Google. LHS 1903 is a small red M-dwarf star that is cooler and shines less brightly than our Sun. Scientists used telescopes in space and ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A planet parade — mistakenly called a planetary alignment by ...