Scientists are plotting new directions in the quest for cosmic company
The National Institutes of Health would stop processing grants, but astronauts in space would keep working
The fireball’s sonic boom sparked a 2.0-magnitude seismic event
The GeoCARB satellite will map the concentrations of key greenhouse gases over the Americas
Experiment shows how spacecraft could use stellar signals to navigate in deep space without human instruction
How could the oldest black holes have grown so big so early in the universe?
The Axion Dark Matter Experiment just entered the most sensitive phase yet in its search for invisible particles to explain the universe's hidden mass
A chemical found in a distant gas cloud could help explain where planets like Earth get the seeds of life
The era of “multimessenger astronomy” has arrived
Astronomers found that other star systems tend to host similarly sized exoplanets—far different from ours. Christopher Intagliata reports.
Scientists are peering into the “engines” behind some of the most extreme outbursts in the universe
Everyday Einstein explains how we determine the age of our universe from ancient stars and relic radiation left over from the big bang
Rumors swirl around whether or not a mysterious spacecraft successfully entered and began operations in low Earth orbit
Crystalline growth, rather than biotic processes, are the likely explanation for strange Martian minerals glimpsed by NASA’s Curiosity rover
2017 was a banner year for scientists seeking aliens—even though they (apparently) didn’t find any
Earth scientists recommend smaller, cheaper missions to maximize science returns over the next decade
SETI is still scanning the skies for other galactic citizens
General Jay Raymond, Commander of Air Force Space Command, talks about keeping watch over space and cyber.
Even so, the strange saga of Tabby’s Star is far from over
Getting around the sun in 2017 was a memorable trip.