Portal Space Systems will create a second factory to scale up production of high-performance in-space vehicles as it gears up ...

Much has been made of Caitlin Clark's effect on the WNBA. But where does she stack up against all American athletes? Fox ...

Using NASA's Chandra spacecraft and ESA's XMM-Newton satellite, astronomers have investigated the galaxy NGC 7793, searching ...

Astronomers have identified a new kind of cosmic explosion extreme nuclear transients so powerful they outshine typical ...

Portal operates an 8,000-square-foot spacecraft development and testing facility in Bothell, where it’s building its ...

Nearby supernova blasts may have severely altered Earth’s climate history Tree rings reveal spikes in carbon-14 from ancient ...

Ancient supernovas may have blasted Earth with powerful radiation, causing dramatic changes in our climate, and could do so ...

The Vela explosion stands out as the most dramatic example, occurring when our planet was emerging from the last ice age around 13,000 years ago.