The Event Horizon of a black hole is a name we give to the region of spacetime beyond which anything that drops into it can never come back out. Not even light itself. This is contrasted by a white hole, which literally pushes you away by spitting material at you. Credit: NASA:
Measuring Gravitational Waves with eLISA - Evolved Laser Interferometer Space Antenna. "We're looking for evidence of black holes, As of now we only have images of material spinning around a black hole, but we haven't been able to physically measure the black hole itself." Pairs of black holes radiate gravitational waves as they orbit each other in a binary system. Analyzing them can allow scientists to study black holes directly.
So this just happened, and it was either a (super rare) coincidence or we're gonna need to rethink our current understanding of black hole physics. Read the full story on ScienceAlert.com #science #sciencealert #physics #blackholes #space