physics
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What Breakfast Has To Say About Free Will

You forgot to buy milk. Naturally, it’s all the big bang’s fault.


Why Astronaut Mark Kelly Is Now Even Older Than His Twin Brother

Astronaut Scott Kelly returned from a year-long sojourn in space in June. His slightly older astronaut twin, Mark Kelly, stayed home as a control — part of NASA’s twin study to monitor the effects of space on the human body. But there’s a physical change that NASA might not be able to measure that easily. Mark is now even older (by about five milliseconds) than his space-faring twin, thanks to special relativity.


Scientists Just Found Signs Of Supernovae On The Sea Floor

Is it possible to find trace evidence of supernovae from millions of years ago in the sediment lining the ocean floor? One astrophysicist has spent the better part of a decade trying to find the proverbial smoking gun to prove that it is. And now, it seems, he has succeeded.


How To Make Your Own Gravitational Waves

Remember that time Stephen Colbert brought physicist Brian Greene on The Late Show to demonstrate the concept of gravitational waves with green lasers? Yeah, that was pretty awesome. Now there’s a handy DIY demonstration for those of us without access to that kind of technology, courtesy of science presenter Steve Mould.


How Long Would It Actually Take To Fall Through The Earth?

Video: Obviously, in order to answer this super-silly thought exercise, you’d have to make it a little bit more manageable to calculate. That means in this scenario, the Earth is perfectly round, has the same density all throughout, and won’t, like, scorch your bum when you fall through the core. Life Noggin explains the maths behind how long it would take, giving consideration to all that gravity nonsense, and comes up with a shockingly small number.


The Mystery About The 'Coffee Ring Effect' Continues

The “coffee ring effect” is that pattern you get when a single liquid evaporates and leaves behind a ring of previously dissolved solids. In the case of coffee, that would be the coffee grounds. A new paper in Physical Review E. demonstrates that we still have a lot to learn about this seemingly simple everyday occurrence.


How To Give Wood The Ultimate Paper Cut

It’s like a Bizzaro World version of “Rock, Paper, Scissors” where the paper manages to beat everything and scissors are pissed.


You've Never Seen Birds Fly Like This Before

Flight is one of those evolutionary wonders that’s hard to fully appreciate with two squishy eyeballs and a linear sense of time. But we’re no longer limited to what nature gave us, thanks to the wonders of photo editing. As Barcelona-based photographer Xavi Bou shows, a few simple tricks can reveal the dizzying artistry of a bird rustling its wings.


We're One Step Closer To Proving Stephen Hawking Was Right That Black Holes Evaporate

In the 1970s, Stephen Hawking made an audacious prediction that black holes aren’t totally black; they evaporate over time, emitting tiny amounts of radiation in the process. Now Israeli physicists have reported the strongest evidence to date that Hawking was right in a new paper in Nature Physics.


We Are All Intuitive Physicists, Scientists Say

Human beings are very good at acting on the fly: swerving to avoid an obstacle in the road, ducking to keep from being hit, or reflexively catching a fly ball. We can do this because the brain is constantly running simulations of the physics involved as we scan our environment, according to a new series of brain imaging studies.


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