1
00:00:00,000 --> 00:00:04,000
[Orbiting black holes gradually grow closer and merge.]

2
00:00:04,000 --> 00:00:08,000
[Orbiting black holes gradually grow closer and merge.]

3
00:00:08,000 --> 00:00:10,000


4
00:00:10,000 --> 00:00:19,030
[Each black hole’s surface is an event horizon, from which nothing can escape – even light.]

5
00:00:19,030 --> 00:00:24,030
[The orbital motion of the black holes warps nearby space-time.]

6
00:00:24,030 --> 00:00:29,000
[Some of this warping stays close to the holes]

7
00:00:29,000 --> 00:00:34,030
[…while the rest travels outward,]

8
00:00:34,030 --> 00:00:42,430
[…weakening as it spreads out in space.]

9
00:00:42,430 --> 00:00:48,000
[These outgoing weak distortions of space are gravitational waves

10
00:00:48,000 --> 00:00:57,660
[…traveling at the speed of light. We may detect the waves passing by Earth.]

11
00:00:57,660 --> 00:00:57,658