LIGO!!!!

LASER INTERFEROMETER GRAVITATIONAL-WAVE OBSERVATORY!!!!
LIGO will detect the ripples in space-time by using a device called a laser interferometer, in which the time it takes light to travel between suspended mirrors is measured with high precision using controlled laser light. Two mirrors hang far apart, forming one arm of the interferometer, and two more mirrors make a second arm perpendicular to the first. The two arms form an L shape. Laser light enters the arms through a beam splitter located at the corner of the L, dividing the light between the arms. The light is allowed to bounce between the mirrors repeatedly before it returns to the beam splitter. If the two arms have identical lengths, then interference between the light beams returning to the beam splitter will direct all of the light back toward the laser. But if there is any difference between the lengths of the two arms, some light will travel to where it can be recorded by a photodetector.
This is really amazing to be able to detect gravitational waves and to make a device that tries to avoid all other noise. I really enjoyed the video I watched today.
ASHLE EVAN EASLEY IS BLOWIN ME!!!!!!