Astronaut Leland Melvin spoke candidly on Twitter about a strange 'alien encounter' he had on the Space Shuttle. It turns out, it's not just regular citizens who are on the lookout for extraterrestrial life.
NASA's new planet hunter kicks off its two-year mission with a comet photobombing a shot. In the resulting video, other astronomical events were also captured, including stellar flickering, Mars' reflection, and a host of asteroids on the move.
NASA's planet hunter TESS starts scanning the universe for lurking exoplanets. The satellite, launched in April, is expected to identify over a thousand new planets from the stars surrounding the solar system.
Decades after one of humankind's greatest achievements of getting a man on the Moon, trips there remain surprisingly rare. Former astronaut Chris Hadfield and others explain why.
A seemingly regular asteroid turns out to be double trouble as scientists found it is actually a binary system of two objects orbiting each other. This is only the fourth equal mass binary system ever recorded.
It's the end of an era. For decades, the Cape Canaveral launch towers have stood as stalwarts symbolizing the United States space program. Now, the landmark gets demolished just as Delta nears its end.
Life on Mars? Not exactly, but the seasonal spiders that appear on Mars' surface has an interesting story behind them, especially since it's a natural process that doesn't occur on Earth.
NASA is looking for creative ways to deal with the trash accummulated in space. As humanity travels further into the cosmos, the prospect of garbage management becomes trickier and much more important.
NASA may have collected evidence of organic Martian matter 40 years ago — then burned it away accidentally in the Viking landers. A new study tackles the decades-old mystery.
The Kepler Space Telescope has almost run its course. The famous planet hunter is running low on fuel and is now placed on hibernation mode in anticipation of its last data dump.
Astro-mice are on a rocket to the International Space Station as part of a project that's studying the effects of zero-gravity on sleeping patterns and the gut. Ten rodents will be staying for a record-breaking 90 days on the station.
Skywatching enthusiasts find a new favorite spot at the John Glenn Astronomy Park, which Ohio named after an iconic astronaut, the late John Glenn. The park features 12 powerful telescopes and perfect conditions for stargazing.
Once again, NASA delays the launch of cutting-edge James Webb Space Telescope following the recommendations of an independent review board that called out technical issues and human error in the observatory's development.
Aliens might be out there, and if they are, NASA wants to find them. The NExSS project releases a series of papers to help scientists who are hunting for extraterrestrial life in far-flung planets.