Archive | August 2016

Gravitational Waves

Gravitational waves art

In 1916 Albert Einstein Proposed the idea of gravitational waves thanks to his general theory of relativity. A hundred years later on September 14, 2015, LIGO for the first time directly observed ripples in space-time, proving Albert Einstein’s prediction correct, and now this goes down in history as one of the best events in scientific history. So, what are gravitational waves? Put simply they are ripples in space-time, like a rock thrown in a lake. The strong gravitational waves can only happen when cataclysmic events happen in the universe, such as, two black holes colliding, supernovas, and two neutron stars orbiting each other. Gravitational waves travel at the speed of light carrying information of what happened to produce them. Great, we know they’re real. What’s the point of knowing this? There’s many practical uses for this information. It’s like learning a new sense. We get to observe the universe in a whole new way. It gives a new perspective of cosmic events, like, black holes, and supernovae’s.