1 00:00:04,030 --> 00:00:08,020 Music 2 00:00:08,040 --> 00:00:12,040 Dr. Charles Bennett: A brand new 3 00:00:12,060 --> 00:00:16,070 discovery from these observations is that we have 4 00:00:16,090 --> 00:00:20,100 detected the era where the very first stars in the universe ignited. 5 00:00:20,120 --> 00:00:24,130 And this era was for many, surprisingly early. It's only about two 6 00:00:24,150 --> 00:00:28,160 hundred million years after the Big Bang from the time that you had the 7 00:00:28,180 --> 00:00:32,180 intense concentration of all kinds of 8 00:00:32,200 --> 00:00:36,200 exotic particles, to the time when gas clouds can form and condense and form 9 00:00:36,220 --> 00:00:40,230 stars. So we've detected that era for the first time 10 00:00:40,250 --> 00:00:44,260 and it is very early. Well because it takes the light over 11 00:00:44,280 --> 00:00:48,290 13 billion years to reach us, we are seeing now what the universe looked like 12 00:00:48,310 --> 00:00:52,330 then--over 13 billion years ago. So its a fossil 13 00:00:52,350 --> 00:00:56,370 remnant of what the early universe was like and just 14 00:00:56,390 --> 00:01:00,390 fossils are used to study the past, we use this light to study what the universe 15 00:01:00,410 --> 00:01:04,430 what it's like way back near the very beginning. 16 00:01:04,450 --> 00:01:08,460 Dr. Lyman Page: What is the map? Well that picture behind me is really, it's an 17 00:01:08,480 --> 00:01:12,480 image of the whole sky. And its made 18 00:01:12,500 --> 00:01:16,510 to image the whole sky on this oval and you can see 19 00:01:16,530 --> 00:01:20,550 in there blue spots and red spots. And what 20 00:01:20,570 --> 00:01:24,590 those correspond to are slightly hotter and colder images of the 21 00:01:24,610 --> 00:01:28,630 sky. That's a picture there, those hot and cold spots 22 00:01:28,650 --> 00:01:32,660 that pattern, its really the, its the after glow of the Big Bang. 23 00:01:32,680 --> 00:01:36,680 Dr Bennett: We determine using this cosmic consistency the 24 00:01:36,700 --> 00:01:40,720 age of the universe is 13.7 billion years old. 25 00:01:40,740 --> 00:01:44,750 And we've made that determination to 1% accuracy which 26 00:01:44,770 --> 00:01:48,790 is just amazing. Dr. Page: On a sort of deeper 27 00:01:48,810 --> 00:01:52,810 long term level its this 28 00:01:52,830 --> 00:01:56,830 amazing consistency that the picture we can put together of the 29 00:01:56,850 --> 00:02:00,850 universe is relatively simple that the 30 00:02:00,870 --> 00:02:04,860 pieces fit together, its a stunning confirmation 31 00:02:04,880 --> 00:02:08,870 of this, of the study of cosmology from many years now. 32 00:02:08,890 --> 00:02:12,900 Its just built up and here it is. In some ways we're getting 33 00:02:12,920 --> 00:02:16,930 to know the cosmos like we know our own backyards. Its the universe has 34 00:02:16,950 --> 00:02:20,960 all of a sudden has gotten smaller and much more familiar.