Image: V. Altounian/Science
The gravitational wave signal was detected...
When Einstein published his general theory of relativity in 1915, he...
A new system developed by scientists at the Hong Kong University of Science and Technology is capable of absorbing almost all the sound that hits it - 99.7 percent of that sound, to be precise. The new set-up uses not one but two resonators, tuned to vibrate at whatever the frequency of the acoustic waves they're being hit with.
In a galaxy far, far away, two black holes are dancing around each other, drawn together by each others’ immense gravity. Eventually the two may collide, triggering a blast with the power of 100 million star explosions.
That won’t happen for at least 100,000 years, and its effect on Earth will be subtle. The black hole duo is located about 3.5 billion light-years away, but the encounter will send out ripples in the space-time continuum that will allow scientists to better study the theory of general relativity.
A binary star is a star system consisting of two or more stars, orbiting around their common center of mass. Matt Schulz, a PhD candidate, has discovered the first occurence of a binary star where both stars have magnetic fields. The binary star which he discovered is called epsilon Lupi.