Scientists have demonstrated how to manipulate light by using time-varying media in the form of specialized nanomaterials.
Get the latest international news and world events from around the world.
What was the first thing scientists discovered? A historian makes the case for Babylonian astronomy
Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected].
Surprisingly, some Dyson spheres and ringworlds can be stable
In the realm of science fiction, Dyson spheres and ringworlds have been staples for decades. But it is well known that the simplest designs are unstable against gravitational forces and would thus be torn apart. Now a scientist from Scotland, UK has shown that certain configurations of these objects near a two-mass system can be stable against such fractures. The work is published in the journal Monthly Notices of the Royal Astronomical Society.
