Black holes are peculiar enough, judging by the fact that they defy the laws of physics themselves. But gravitational waves can be considered close to black holes in weirdness for their characteristics. Albert Einstein proved around a century ago that space itself is not ‘nothing’ as people perceive it, but it can be curved and bent exactly like a sheet. Space is strongly connected with time, meaning that we can think about the two primordial components of the Universe as a whole: spacetime.
Therefore, gravitational waves mean none-other than the shaking of the fabric of spacetime. It’s needed for a cataclysmic cosmic event to cause such a phenomenon.
New gravitational waves caused by a merger of black holes
Astronomers had seen black holes collisions causing gravitational waves before, but this time it’s something very different. The newly discovered event was caused by a pair of black holes located 2.4 billion light-years away and where one weighed over three times more than the other. Due to the collision, there were even multiple frequencies of the gravitational waves generated.
To make a better idea of how strongly related is space to time, we can take into account what Neil DeGrasse Tyson said about the subject: if you say to a friend to meet you at a certain place, he’ll immediately ask you ‘when?’. And if you tell a friend to meet you at a certain hour, he’ll obviously ask you ‘where?’.
Black holes are by far the most mysterious type of cosmic objects known to mankind, as they refuse to obey the laws of physics. Time simply stops inside a black hole, and even light gets pulled in by the infinite gravity. There has been plenty of debate among the scientific community about whether light has mass or not. But as long as a black hole’s gravity can affect it, this suggests that even light has mass.
The new findings of the gravitational waves were reported in the American Physical Society.