Posts by 

Dave Adalian

Are the Andromeda and Milky Way galaxies already merging?

Researchers studying the fastest stars in the Milky Way galaxy believe some of them may come from the nearby Andromeda galaxy.

Mars mission to send Blue and Gold satellites to red planet

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.

LIVE MONDAY: Space junk with Jonathan McDowell

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 buddy for Betelgeuse? Does this mean no supernova?

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.

Ailing Starliner spacecraft returns to Earth sans crew

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.

Dark matter hunters explore the strangest of places

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.

LIVE on Monday: Climate chaos with Daniel Swain

Climatologist Daniel Swain will discuss climate change and extreme weather LIVE with EarthSky at 12:15 p.m. (17:15 UTC) on Monday, July 29. Join us!

Kangaroo rats are desert dwellers: Lifeform of the week

Kangaroo rats are small rodents, but they are highly skilled and know how to defend themselves from different predators, including poisonous snakes.

Falcon 9 return to flight OK’d by FAA

A SpaceX Falcon 9 launched Thursday night exploded. It was carrying a Starlink satellites that failed to reach their proper orbit and are now expected to make a fiery reentry.

Do dark matter collisions on Jupiter glow in the infrared?

Researchers think dark matter collisions make Jupiter's atmosphere glow in infrared light. It would provide another way to detect the mysterious substance.