WEBVTT FILE ﻿1 00:00:00.000 --> 00:00:04.004 Two years ago, in September 2016. OSIRIS-REx launched... 2 00:00:04.004 --> 00:00:06.206 [rocket engine burn] >>ANNOUNCER’S VOICE: And liftoff 3 00:00:06.206 --> 00:00:09.843 of OSIRIS-REx! [cheering] Oh my gosh! Woo! ...NASA’s first 4 00:00:09.843 --> 00:00:12.479 mission to go collect a sample from an asteroid and return it 5 00:00:12.479 --> 00:00:16.516 to Earth. Now it’s August of 2018. and OSIRIS-REx is finally 6 00:00:16.516 --> 00:00:20.087 approaching its target, asteroid Bennu. [music starts] What is 7 00:00:20.087 --> 00:00:23.924 the approach phase of the OSIRIS-REx mission? The approach 8 00:00:23.924 --> 00:00:29.863 phase is when we reach about two million kilometers from the 9 00:00:29.863 --> 00:00:33.233 asteroid Bennu. You know we’ve been approaching Bennu ever 10 00:00:33.233 --> 00:00:35.903 since we launched, but once we reach this period where we’re 11 00:00:35.903 --> 00:00:39.540 about two million kilomters away, that’s when our cameras 12 00:00:39.540 --> 00:00:44.378 can start to pick up Bennu and see it as a single pixel in the 13 00:00:44.378 --> 00:00:46.780 image. So what will you be doing throughout this approach phase? 14 00:00:46.780 --> 00:00:49.049 Sure, so I’m part of the flight dynamics team, and we’re 15 00:00:49.049 --> 00:00:52.886 responsible for navigating the spacecraft. During the approach 16 00:00:52.886 --> 00:00:55.856 phase, we’ll figure out our best estimate of where the spacecraft 17 00:00:55.856 --> 00:00:58.792 is relative to the asteroid and also where the asteroid is 18 00:00:58.792 --> 00:01:01.662 relative to the rest of the solar system. And during this 19 00:01:01.662 --> 00:01:04.865 phase, will you be looking out for any sort of hazards around 20 00:01:04.865 --> 00:01:07.701 the asteroid, like little moons or dust? Yeah absolutely. We 21 00:01:07.701 --> 00:01:10.370 have specific science observation campaigns where 22 00:01:10.370 --> 00:01:13.440 they’ll be looking for small satellite possibilities or 23 00:01:13.440 --> 00:01:17.411 activity on the asteroid. So Lori, I know your background is 24 00:01:17.411 --> 00:01:21.181 planetary science. As a planetary scientist, how excited 25 00:01:21.181 --> 00:01:24.251 are you about the OSIRIS-REx mission and about bringing a 26 00:01:24.251 --> 00:01:27.621 sample of an asteroid back for the first time for NASA? This is 27 00:01:27.621 --> 00:01:30.424 incredibly exciting. The asteroids are the building 28 00:01:30.424 --> 00:01:33.527 blocks of the solar system, that’s what built and made up 29 00:01:33.527 --> 00:01:36.663 our planets. They possibly carry the building blocks, the 30 00:01:36.663 --> 00:01:40.801 molecules that could lead to life. But even more than that, 31 00:01:40.801 --> 00:01:44.871 most of our missions we send a satellite to go orbit a planet 32 00:01:44.871 --> 00:01:48.642 or maybe a lander to go land on the surface. But they stay there 33 00:01:48.642 --> 00:01:52.045 and do their science at that location. OSIRIS-REx is going to 34 00:01:52.045 --> 00:01:56.116 grab a sample and bring it back to Earth. And that is really 35 00:01:56.116 --> 00:02:01.088 special and unique. We can not only analyze that sample today, 36 00:02:01.088 --> 00:02:04.124 but then we can save that sample and as our knowledge grows in 37 00:02:04.124 --> 00:02:07.527 the future and as our laboratory capabilities grow in the future, 38 00:02:07.527 --> 00:02:10.664 we can go back and reanalyze that sample. It will be there 39 00:02:10.664 --> 00:02:14.434 for us to keep learning from for years and years, decades and 40 00:02:14.434 --> 00:02:17.938 decades to come. OSIRIS-REx will arrive at Bennu in December of 41 00:02:17.938 --> 00:02:21.041 this year, 2018, and then it will spend the next year and a 42 00:02:21.041 --> 00:02:24.811 half studying the asteroid. In July of 2020, OSIRIS-REx will 43 00:02:24.811 --> 00:02:27.314 collect a sample from the surface of Bennu, and then it 44 00:02:27.314 --> 00:02:31.184 will deliver that sample to Earth in 2023. So stay tuned 45 00:02:31.184 --> 00:02:33.620 over the next several months and years to learn about the 46 00:02:33.620 --> 00:02:36.757 spacecraft’s progress in helping us unveil the mysteries of our 47 00:02:36.757 --> 00:02:39.026 solar system’s formation. 48 00:02:39.026 --> 00:02:42.362 [OSIRIS- REx logo] 49 00:02:42.362 --> 00:02:45.499 [satellite swooshes by, beep beep, beep beep, beep beep] 50 00:02:45.499 --> 00:00:00.000 NASA Goddard Space Flight Center www.nasa.gov/goddard