Gravitational Waves: Einstein was right!

People around the world cheered yesterday morning (Feb. 11) when scientists announced the first direct detection of gravitational waves — ripples in the fabric of space-time whose existence was first proposed by Albert Einstein, in 1916. The waves came from two black holes circling each other, closer and closer, until they finally collided. The recently upgraded Large Interferometer Gravitational Wave Observatory (LIGO) captured the signal on Sept. 14, 2015. Not every scientific discovery gets this kind of reception, so what exactly is all the hype about, and what's next for LIGO now that it has spotted these elusive waves?


The BBS and their legacy to the World

Here is a neat set of videos ilustrating how the BBS system worked. People were excited by the possibility of "one day" everyone could be meeting online. If you would say something like that in the 80's, you wouldn't get many friends. Now it looks like the way you MEET your FRIENDS and guess what... they are not nerds. Today we have Internet users...

Our kids don't even know of a world without Internet, but BBS played a very important role on terraforming the future: