Traversable wormholes… without exotic matter

According to string theory, hypothetical shortcuts through spacetime called wormholes, might well exist in our Universe.
For those of you who wouldn’t be Stargate fans, wormholes would be “tunnels” between two different locations in the Universe (they could also allow to travel in time, or to parallel universes). Basically, while it …

Quantum nature of space challenged by observations

New observations have shown that the quantum structure of space, if there is any, is at much smaller scales than predicted.
In Einstein’s theory of relativity, space is a smooth, continuous fabric. In quantum theory, there is an inherent discreteness present in physics. In an attempt to reconcile the two theories, …

You thought black holes were strange? Think again.

One of the great challenges of modern physics is to reconcile quantum mechanics and relativity. Black holes are an excellent example of the incompatibility between the two theories, and quantum theorists have proposed various alternatives. While they all remain purely hypothetical, they also all seem much weirder than black holes …

Traveling faster than light?

That’s probably one of the most common questions people ask when thinking about space travel: is it possible to travel faster than light? And if so, will we be able to, someday?
While this could have been part of the article Will we ever travel to other stars?, I chose to …

© 2010-2017 Atra Materia All Rights Reserved -- Copyright notice by Blog Copyright