Was the universe born spinning?

physics4me

The universe was born spinning and continues to do so around a preferred axis – that is the bold conclusion of physicists in the US who have studied the rotation of more than 15,000 galaxies. While most cosmological theories have suggested that – on a large scale – the universe is the same in every direction, these recent findings suggest that the early universe was born spinning about a specific axis. If correct, this also means that the universe does not possess mirror symmetry, but rather has a preferred right or left “handedness”.

Led by Michael Longo from the University of Michigan, the team had set out to test whether mirror symmetry, also referred to as “parity”, was violated on the largest scales. If a particle violates parity, its mirror image would behave differently, and such particles can be described as right- or left-handed. Parity is violated in nuclear beta…

View original post 627 more words

Why time travel will remain a sci-fi fantasy

physics4me

Scientists prove nothing can travel faster than the speed of light  

No heading Back To The Future: Scientists have proved that a single photon obeys Einstein’s theory that nothing can travel faster than the speed of light and that time travel is therefore impossible  

For those that while away their days dreaming about travelling into the distant past or future, it is disappointing news.

But scientists claim to have proved that a single photon obeys Einstein’s theory that nothing can travel faster than the speed of light – meaning time travel is impossible.

Their findings close a decade-long debate about the speed of a single photon, the fundamental unit of light.

Lead researcher Professor Shengwang Du, from the Hong Kong University of Science and Technology (HKUST), said: ‘The results add to our understanding of how a single photon moves. They also confirm the upper bound on how fast…

View original post 446 more words

Why the Transporter Will Never Work (thank god!)

Bad Science Writing Will Destroy the World

Last time, I wrote about the shoddy reporting about quantum mechanics and the supposed promise of teleportation from the effects of quantum entanglement (if that exists). Now I want to write about the very idea of the Star Trek transporter. Let me start by saying that it will never work. Not in the sense that it works fairly unreliably in the shows and movies, often splitting people into good and bad twins or sending them to Bizarro universe or something, but in the sense that nothing like it will ever be a means for getting people from one place to another. And that’s a good thing. We don’t need any more incidents where Kirk is split into decisive, evil Kirk and nice, milquetoast Kirk—that nearly cost us the whole crew of NCC-1701!

bad kirkevil-spock

And we certainly don’t want to risk beaming someone halfway into a bulkhead, or any of the other…

View original post 907 more words