Sputnik skies to analysis of interstellar visitors, scientists are rethinking how and where to look for physical traces of ...

While imperceptible to humans, these tiny delays are significant for experiments that rely on pulsars as ultra-precise cosmic ...

NASA's plans for Mars sample return are effectively cancelled as part of a bill approved by the U.S. Congress, ending efforts ...

After reviewing almost 30 years of signals, University of California Berkeley researchers have identified 100 mysterious, ...

Add Yahoo as a preferred source to see more of our stories on Google. Why Dope Thief — starring Brian Tyree Henry and Wagner Moura — was one of TV Scholar's favorite watches this year. (Photo ...

Medicare eligibility generally begins at 65. You may want to delay your enrollment if you have great health insurance through a job. Even though Part A is usually free, you may want to wait if it bars ...

3I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar ...

Did an alien spacecraft just fly by Earth? That’s the question a lot of people, including Harvard astrophysicist Avi Loeb, are asking right now. A massive interstellar object called 3I/ATLAS which ...

An astrophotograph of the interstellar comet known as 3I/ATLAS highlights its green coma and a wandering blue-tinted ion tail. (Copyright Victor Sabet and Julien De ...