How do 'moving rulers shrink'? The strange physics behind special relativity
Special relativity is beyond weird. Among its many statements are that moving clocks run slow and that moving rulers shrink. But how are we supposed to make sense of this?
By Paul Sutter published
Leftover light from the young universe has a major flaw, and we don't know how to fix it. It's the cold spot. It's just way too big and way too cold.
By Ben Turner published
A new imaging technique, which captured frozen lithium atoms transforming into quantum waves, could be used to probe some of the most poorly understood aspects of the quantum world.
By Michael Garrett published
The rise of AI might explain why the search for extraterrestrial intelligence (SETI) has yet to detect the signatures of advanced technical civilizations elsewhere in the galaxy.
By Brett Tingley published
Elon Musk isn't convinced that aliens have ever visited Earth, according to remarks the SpaceX CEO and founder made during a conference on Tuesday (May 7).
By Joe Rao published
The International Space Station, the largest and brightest object now orbiting Earth, will provide excellent views for skywatchers across much of the Northern Hemisphere for much of May.
By Jeff Spry published
An examination of the angels of the moons of Iego from "Star Wars: The Phantom Menace" on the iconic film's 25th anniversary.
By Tom Kerss last updated
Buying Guide We've rounded up the best telescopes for deep space viewing, including smart scopes and more traditional setups at a range of different price points.