Ask Ethan: Why is there no such thing as antigravity?
In general relativity, matter and energy curve spacetime, which we experience as gravity. Why can’t there be an “antigravity” force?Continue reading on Starts With A Bang! » Source link...
SCIENCE
10 quantum myths that must die in the new year
The very word “quantum” makes people’s imaginations run wild. But chances are you’ve fallen for at least one of these myths.Continue reading on Starts With A Bang! » Source link...
Why scientists can’t stop searching for alien life
There will always be “wolf-criers” whose claims wither under scrutiny. But aliens are certainly out there, if science dares to find them.Continue reading on Starts With A Bang! » Source link...
Prove Einstein’s relativity for yourself for under $100
Particles are everywhere, including particles from space that stream through the human body. Here’s how they prove Einstein’s relativity.Continue reading on Starts With A Bang! » Source link...
The trick to identifying JWST images in an instant
If you can identify a foreground star, the spike patterns are a dead giveaway as to whether it’s a JWST image or any other observatory.Continue reading on Starts With A Bang! » Source link...
Ask Ethan: Why does something exist instead of nothing?
Perhaps the most remarkable fact about the Universe is simply that it, and everything in it, exists. But what’s the reason why?Continue reading on Starts With A Bang! » Source link...
Does our physical reality exist in an objective manner?
We think of physical reality as what objectively exists, independent of any observer. But relativity and quantum physics say otherwise.Continue reading on Starts With A Bang! » Source link...
Why ice skating is a miracle of physics
While ice itself is slick, slippery, and difficult to navigate across under most circumstances, skaters easily glide across the ice.Continue reading on Starts With A Bang! » Source link...
The simplest explanation for ultra-high-energy cosmic rays
The highest-energy particles could be a sign of new, unexpected physics. But the simplest, most mundane explanation is particularly…Continue reading on Starts With A Bang! » Source link...
How recently have we understood the Universe?
While humanity has been skywatching since ancient times, much of our cosmic understanding has come about only recently. Very recently.Continue reading on Starts With A Bang! » Source link...
