So what objects do we find in-between? Subscribe and join us weekly for astronomical facts and interesting science. If you ...

Good morning – and also, a quick goodbye. After more than two years and 300 newsletters, this is my final Morning Update. I’m ...

In the latest research, telescope observations of 3I/ATLAS examine its chemical structure and suggest that it took shape in a ...

To be a planet, NASA says an object must be big enough that its gravity has cleared away any other objects of a similar size near its orbit around the Sun. I can understand how something can clear ...

Almost half the stuff in orbit around Earth can be classified as space junk, and the problem is only going to get worse as launches and orbital infrastructure increase. Using data from the U.S. Space ...

Japanese astronomers have discovered a thin atmosphere around a small celestial body beyond Neptune. This trans-Neptunian object is much smaller than what was previously thought possible to sustain an ...

Astronomers have detected a thin atmosphere around a tiny celestial body in the outer solar system for the first time — an object previously thought to be too small to support the presence of an ...

Blue Origin launched the company's third New Glenn rocket on Sunday, re-flying and successfully recovering a previously used first stage. But the rocket's second stage put the payload, a ...

The Black Knight story didn’t begin as a claim of alien technology. It began as an object that didn’t fit existing categories. Early observations, signals, and images were difficult to reconcile with ...

COLORADO SPRINGS — Citra Space said it raised $15 million in a Series A funding round led by Washington Harbour Partners, as the Colorado-based startup looks to expand its software platform for ...

And now for the dangerous part. Artemis II is officially flying to the moon after firing its thrusters and leaving Earth’s orbit at 7:49 p.m. — beginning an epic four-day journey that will take the ...