1 00:00:00,010 --> 00:00:04,010 [slate] 2 00:00:04,030 --> 00:00:08,040 [slate] 3 00:00:08,060 --> 00:00:12,080 This new Hubble image 4 00:00:12,100 --> 00:00:16,120 shows comet 2I/Borisov as it comes into the solar system 5 00:00:16,140 --> 00:00:20,180 and is starting to heat up and emit gases. There's a long tail 6 00:00:20,200 --> 00:00:24,220 as the gases are emitted off. [slate] 7 00:00:24,240 --> 00:00:28,300 [slate] We are 8 00:00:28,320 --> 00:00:32,400 particularly excited about comet Borisov because we caught it on the way in and 9 00:00:32,420 --> 00:00:36,540 we can observe it as it comes in to closest approach to the sun and then 10 00:00:36,560 --> 00:00:40,690 as it recedes out into interstellar space once again. 11 00:00:40,710 --> 00:00:44,710 [slate] 12 00:00:44,730 --> 00:00:48,860 Studying interstellar space is important 13 00:00:48,880 --> 00:00:53,060 for understanding our place in the universe. Interstellar 14 00:00:53,080 --> 00:00:57,230 space is what our solar system is embedded in, and that we're moving through. 15 00:00:57,250 --> 00:01:01,410 So our ability to understand what's out there and what we're colliding with as we 16 00:01:01,430 --> 00:01:05,430 move through it, what we might see as we move through it is very exciting. 17 00:01:05,450 --> 00:01:09,450 [slate] 18 00:01:09,470 --> 00:01:13,640 An interstellar object is something that's out in interstellar space. 19 00:01:13,660 --> 00:01:17,670 Usually moving through it at relatively high velocity. 20 00:01:17,690 --> 00:01:21,720 It can be as simple as dust and gas or it can be a larger object like 21 00:01:21,740 --> 00:01:25,750 an asteroid or a comet. [slate] 22 00:01:25,770 --> 00:01:29,910 Studying and 23 00:01:29,930 --> 00:01:34,080 imaging comets is important because in many cases they sample 24 00:01:34,100 --> 00:01:38,280 what the surroundings were in which it formed. 25 00:01:38,300 --> 00:01:42,470 What the chemical composition, et cetera of the material in which formed is. 26 00:01:42,490 --> 00:01:46,510 It can be a way to sample the early stages of our solar system if it's a local 27 00:01:46,530 --> 00:01:50,560 comet. Or with an interstellar comet it can actually give us 28 00:01:50,580 --> 00:01:54,630 information on what conditions were like in a system far away from us. 29 00:01:54,650 --> 00:01:58,650 [slate] 30 00:01:58,670 --> 00:02:02,830 Interstellar space is 31 00:02:02,850 --> 00:02:06,860 the space between the stars. We have our local solar 32 00:02:06,880 --> 00:02:10,920 system with the sun and the planets in it including the Earth. And a large 33 00:02:10,940 --> 00:02:14,990 distance to the nearest star. And all of that space between our solar system 34 00:02:15,010 --> 00:02:19,080 and the neighboring stars is interstellar space. The space between 35 00:02:19,100 --> 00:02:22,856 the stars. It's mostly empty but it does have objects moving through it.