Shop HP’s Memorial Day Sale:Save up to 61% on PCs and more! | Order: New iPad Mini | New iPad Air | New AirPods

Science

Surprise - that "alien megastructure" scientists spotted isn't a Dyson Sphere

Surprise - that "alien megastructure" scientists spotted isn't a Dyson Sphere

Eric Frederiksen

Remember that “alien megastructure” the Kepler Space Telescope found a couple years back? Scientists have a new theory for what it might be that explains the readings we’ve seen without having to rustle up a science-fiction concept from the 1930s. So what is it? Rings, of course. Tabby’s Star – the nickname for KIC 8462852 – was observed by so-called exoplanet hunters to be showing...

As Cassini begins its decent to crash into Saturn, 27-year veteran opens on feelings

As Cassini begins its decent to crash into Saturn, 27-year veteran opens on feelings

Ron Duwell

The Cassini spacecraft and its missions to photograph the gas giant Saturn, its rings, and its elaborate moon system have all been a universal success from beginning to end. NASA began development way back in the 1980s, launched the probe in 1997, watched as it entered orbit in 2004, and sat back to let the public marvel at the wondrous pictures it has captured. And now, at the end of...