1 00:00:00,030 --> 00:00:04,040 [slate] 2 00:00:04,060 --> 00:00:08,060 [slate] 3 00:00:08,080 --> 00:00:12,140 Well 4 00:00:12,160 --> 00:00:16,280 what we saw was the result of the merging of two neutron stars 5 00:00:16,300 --> 00:00:20,450 very compact stars. When they merged they created 6 00:00:20,470 --> 00:00:24,650 an explosion in space-time. Those ripples went out 7 00:00:24,670 --> 00:00:28,730 across the universe as gravitational waves and were detected on 8 00:00:28,750 --> 00:00:32,910 Earth. The matter involved was heated up to a very high temperature 9 00:00:32,930 --> 00:00:37,110 which gave off gamma rays and other forms of light. And in that 10 00:00:37,130 --> 00:00:41,180 fireball, the matter was fused into gold and platinum 11 00:00:41,200 --> 00:00:45,280 and other heavy elements that were diffused back into the interstellar 12 00:00:45,300 --> 00:00:49,420 medium. Almost everything I've said is the first time we've ever seen that 13 00:00:49,440 --> 00:00:53,460 happen. 14 00:00:53,480 --> 00:00:57,650 [slate] That is absolutely what I'm saying 15 00:00:57,670 --> 00:01:01,720 We think that all the gold in the universe was formed in explosions of this kind. 16 00:01:01,740 --> 00:01:05,850 After the explosion happens, the gold is spread out into 17 00:01:05,870 --> 00:01:10,020 gas and dust of the interstellar medium. Later on that gas and dust 18 00:01:10,040 --> 00:01:14,080 collapses into brand new stars and brand new planetary systems 19 00:01:14,100 --> 00:01:18,180 and on those planets there will be gold to be mined and formed into 20 00:01:18,200 --> 00:01:22,220 the rings on your finger. 21 00:01:22,240 --> 00:01:26,410 [slate] this is about the fourth time we've seen gravitational waves 22 00:01:26,430 --> 00:01:30,450 a merger in the distant 23 00:01:30,470 --> 00:01:34,530 universe. This is the first time we've seen light from the event 24 00:01:34,550 --> 00:01:38,640 and the combination of the gravitational waves and the light 25 00:01:38,660 --> 00:01:42,820 that seen by telescopes all over the world and in orbit 26 00:01:42,840 --> 00:01:46,890 has allowed us to deduce exactly what was happening and that's how we 27 00:01:46,910 --> 00:01:50,980 for the first time seeing the formation of gold, platinum and other heavy metals 28 00:01:51,000 --> 00:01:55,100 elements actually happening. It's confirmed our ideas of what 29 00:01:55,120 --> 00:01:59,260 must be going on but we had no direct confirmation before 30 00:01:59,280 --> 00:02:03,290 of this event. 31 00:02:03,310 --> 00:02:07,470 [slate] Gravitational waves are ripples 32 00:02:07,490 --> 00:02:11,540 in space-time that are caused when two black holes 33 00:02:11,560 --> 00:02:15,610 or neutron stars merge. Some of their mass is converted 34 00:02:15,630 --> 00:02:19,710 into gravitational energy that then goes spreading out across the universe 35 00:02:19,730 --> 00:02:23,870 like ripples and it 36 00:02:23,890 --> 00:02:28,060 provides us with information that's very different than the information we get 37 00:02:28,080 --> 00:02:32,180 from light so we can learn things about the universe that we didn't know before 38 00:02:32,200 --> 00:02:32,866