BlueBird satellites, the largest communications satellites ever, opened their antennae this week. Astronomers believe they will further degrade the night sky.
Watch our replay about climate change and extreme weather with climatologist Davide Faranda, an expert on cold spells, heatwaves and severe thunderstorms.
The Mars ESCAPADE mission will study the red planet's magnetosphere using a pair of small satellites. ESCAPADE will launch no earlier than spring 2025.
Astrophysicist Jonathan McDowell will discuss humans' unexpected impacts on space LIVE with EarthSky at 12:15 p.m. (17:15 UTC) on Monday, September 16. Join us!
A recently-published study suggests the red giant star Betelgeuse may have a sun-size companion which might affect the star's brightness and variability.
Boeing's Starliner capsule landed safely - without its crew - on Friday night. The 2 astronauts are still stuck aboard the ISS, slated to return in February.
Recent research suggests evidence for dark matter is - or might be found - in extreme locations. Researchers are looking in distant galaxies and here on Earth.
Award-winning reporter and editor Dave Adalian's fascination with the cosmos began during a long-ago summer school trip. That fieldtrip never ended, and still Dave pursues adventures under the night sky.
Dave grew up in California's Tulare County - where the San Joaquin Valley meets the Sierra Nevada - a wilderness larger than Delaware and Rhode Island combined.
He studied English, American literature and mass communications at the College of the Sequoias and the University of California, Santa Barbara. He has worked as a reporter and editor for a variety news publications on- and offline during a career spanning more than 30 years.