This may sound like a huge waste of money to some people and a another large step in space for the rest... NASA and the European Space Agency are teaming up to finally test Relativity. How are they going to do it, you ask? Well, they will position 3 spacecrafts about 3 million miles apart and fire lasers at each other. "duh"
...The laser beams won't harm the spacecraft, which will be carrying floating cubes of gold platinum, instead they'll be used to measure the changes. It's said to be the largest scientific apparatus to ever be built... It's apparently the last part of Einstein's theory of general relativity to be tested, but hasn't been possible yet due to the tricky nature of detecting them. Why bother with all this time and expense? Apparently once we learn more about gravitational waves, we learn more about space and the universe around us—giving us insight into collapsed stars' matter and black holes.I'm on the fence with this one...either way this project LISA, Laser Interferometer Space Antenna, won't be ready for launch until the year 2020.