Paranormal Psychic Forums

Psychic paranormal community Forums for like minded individuals who wish to connect, chat and share.

Scientists record a fourth set of gravitational waves

Bringing some of the mysteries of the universe a little closer to home.

User avatar
Owlscrying
Posts: 1412
Joined: Mon Apr 03, 2017 3:21 am

Unread post Thu Sep 28, 2017 12:18 am

Last year, researchers confirmed the existence of gravitational waves with two Laser Interferometer Gravitational-wave Observatory (LIGO) detectors. Shortly thereafter, they detected twoadditional gravitational wave-causing events that sent ripples through the universe. Well, we can now add a fourth to that list, as astronomers announced another set of waves. And for the first time, they observed the waves with a third detector -- the Italy-based Virgo.

Let's review a little before we dig into the huge benefits that come with having three detectors rather than two. First, gravitational waves are essentially ripples in spacetime. When some major event occurs in the universe -- like, for example, when two black holes merge into one -- a ripple is sent out in all directions and it travels through spacetime at the speed of light. Albert Einstein predicted these sorts of waves existed, but it wasn't until the LIGO project that researchers could actually observe them.

The LIGO and Virgo detectors are all largely the same design. Two very long tunnels are arranged perpendicular to each other. At the point where they meet, a laser beam is split and part of it travels down one tunnel, and the other part down the second tunnel. Mirrors at the tunnel ends bounce the beams back and if no major cosmic activity has occurred, the two beams cancel each other out. However, if say two black holes slam into each other and create gravitational waves, those waves will stretch and pull spacetime, changing the length of the tunnels ever so slightly. When that happens, the two laser beams are bounced back at slightly different times and when they meet, the difference between them provides astronomers with all sorts of information about what happened, where and when.

Source

 
Image

User avatar
Owlscrying
Posts: 1412
Joined: Mon Apr 03, 2017 3:21 am

Unread post Thu Sep 28, 2017 12:18 am



LIGO’s first detection seemed almost too perfect to be true. Scientists who made the discovery recount their own journey from self-doubt to confidence that the experiment had indeed made a historic breakthrough.

 
Image

Post Reply

Return to “The Universe”

  • Information
  • Who is online

    Users browsing this forum: No registered users and 2 guests