The debate about 'Oumuamua's nature and origin continues.
Crashing a giant space rock into a young planet can strip off some or all of its atmosphere, creating a wealth of different types of worlds.
Only moments before New Horizons flew by the most distant solar system object ever visited, astrophysicist and Queen guitarist Brian May released his new single based on the mission.
Antarctica is the coldest, windiest, and driest continent. Because so little moisture falls as rain or snow, Antarctica is classified as a desert.
Alien civilizations with technology levels similar to that of Earth could be visible with current instruments, if they've hoisted enough satellites into orbit, a new study suggests.
What gives Jupiter's Great Red Spot its distinct color? A new study shows why the answer may not be easy to find.
A journal of a Maine reverend reveals detailed sunspot observations during the 1816 "year without a summer."
The winter solstice brings shifts in temperature and icy weather as the sun dips to its lowest point in the sky.
What do you do if your eclipse glasses haven't arrived, or have been recalled? Here are some other options for safely observing the eclipse.
A relocatable lander could explore the hazy skies of Saturn's intriguing moon Titan, according a new mission proposal.
Life re-emerged at the site of the dino-killing asteroid's impact at roughly the same time it began to thrive around the globe, despite suffering from worse conditions.
Creating clouds in the sky or redirecting sunlight to bring down the Earth's temperature could have an effect on astronomy.
Pluto may be sharing its atmosphere with its largest moon, Charon, creating the visually striking red spot at the satellite's north pole.
Before it died, Japan's Hitomi satellite revealed surprising insights about how black holes stir up gas inside enormous collections of galaxies.
Saturn's intriguing moon Enceladus could resemble Earth's Lost City, a network of hydrothermal vents in the Atlantic Ocean where life survives despite cold and darkness.
Aliens may be mediocre just like Earthlings, which could explain why humanity hasn't heard from advanced civilizations yet.
Radiation from beyond the solar system may destroy any organic fossils lying on the surface of Mars or Jupiter's icy moon Europa.
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