Dark Skies
Darkness can be scary for humans. But illuminating our cities comes with a cost.
6:42
Change The Laws Of Physics? Probably Not
The observation of a seemingly faster-than-light emission from two merging neutron stars likely has a conventional explanation.
25:28
A Deep Ocean Dive Is Training NASA For Space
NASA is exploring a deep-sea volcano off the coast of Hawaii as a test run for human and robotic missions to Mars and beyond.
Celebrating ‘A Brief History Of Time’ With Cocktails, Physics, And Poetry
For the 30th anniversary of ‘A Brief History of Time,’ SciFri threw a party.
Presenting The ‘Brief History Of Time’ Artist Challenge Winners
We challenged artists to interpret Hawking’s classic book. They did not disappoint.
16:35
Why Is The Sun’s Corona Hotter Than Its Surface?
Scientists hope the Parker Solar Probe will help them find the answer—and not burn up in the process.
17:02
Liquid Water Under The Martian Surface
Researchers announce a large underground lake on Mars just as the planet gets a close-up.
6:48
Blissed Out On Earth’s Blingy Core
Plus, the search for virtual particles and a distant planet gets swallowed by its sun.
12:15
Jupiter Wins The Moon Lottery
The largest planet in our solar system officially racked up a total of 79 moons this week, including one newly discovered “oddball.”