A NASA-funded study is giving scientists insight into how "night-shining clouds" form in the upper atmosphere — and the role that growing space traffic plays in the phenomenon.
The Defense Advanced Research Projects Agency (DARPA) has picked three big space companies for the first phase of a larger project to test nuclear propulsion above low Earth orbit by 2025.
For a few brief minutes, a suborbital rocket from NASA has an ambitious plan to seek out particles from interstellar space.
Perseverance's laser hasn't yet penetrated the mystery of a strange Martian rock near the rover's new digs.
The notorious Apophis space rock just shed its hazardous status — for the next 100 years at least — after fresh observations of the near-Earth asteroid.
Data from one of Cassini's last flybys of Titan probed the depths of Kraken Mare to better understand the moon's alien chemistry.
An epic nighttime skydive saw Red Bull Air Force's Amy Chmelecki and teammates don pyrotechnics to highlight – literally – the importance of astronomy and dark skies in a rural region of Texas.
Gut-wrenching pictures and video documented the beginning of the end for the Arecibo Observatory, one of the world's most iconic telescopes.
Stratolaunch has started construction on a prototype of a Mach 6 vehicle designed to launch from the world's biggest airplane.
Astronomers say they'll have to keep an eye on the near-Earth asteroid Apophis to see how much of a danger the space rock poses to our planet during a close pass in 2068.
A Chinese reusable experimental spacecraft has safely landed after two days in orbit, according to state media, and may have deployed a satellite during its mysterious, brief journey in space.
Here are all the major milestones of the Mars 2020 mission to the Red Planet, from launch to landing.
A "ring of fire" solar eclipse will briefly appear in parts of Africa and Asia this weekend, and if you aren't out there in person, you can take in the spectacular show online.
It's time to suit up for "Star Wars Day" — that annual May the Fourth (be with you) fan celebration that happens on Monday (May 4). Lego has three new helmet sets to help you get in the mood.
Could Mercury's close orbit to the sun help the planet generate ice? This sounds like a paradox, but a new study shows how it could happen.
Freeman Dyson may be gone, but his famous alien-hunting idea will likely persist far into the future.
Aerojet Rocketdyne will develop "enabling technologies" for DARPA's Glide Breaker program under a newly announced contract, which is worth up to $19.6 million.
Three lunar missions, commercial spaceflight milestones, the first all-woman spacewalk — 2019 was a busy year in space for public and private entities alike.
What is it about the "Star Wars" franchise that gives it staying power throughout a generation and a half of change?