00:00 Before watching the video, I remind you that there are more contents on the Hotpot website.
00:04 In addition to the sun, stars, dwarf stars and satellites,
00:08 there are many small celestial bodies in the solar system.
00:11 The small star is one of them.
00:13 And among them, the most dangerous and most likely to hit the earth,
00:17 the small star Bennu,
00:18 is one of the key research projects of NASA, the US National Aeronautical and Space Administration.
00:23 NASA launched its first small star probe in 2016,
00:27 the OSIRIS.
00:29 The probe flew to Bennu in 2018.
00:32 Then it collected about 250 grams of rock and dust samples on the surface of Bennu,
00:37 and successfully brought the samples back to earth yesterday.
00:40 Bennu is a small star discovered in 1999.
00:44 It is about 500 meters in diameter.
00:45 The rock of Bennu is considered to have a history of 4.6 billion years,
00:50 including some of the oldest objects formed in the solar system.
00:53 Because Bennu is relatively close to the earth every six years,
00:57 it is classified as a near-Earth celestial body.
01:01 NASA estimates that Bennu may hit the earth in 159 years,
01:06 but the probability is only 0.037%.
01:09 Now, the probe, which has been sailing for seven years and has traveled 6.2 billion kilometers,
01:13 finally landed successfully yesterday.
01:15 NASA told the Faxing News Agency that the samples brought back this time are of historical significance.
01:19 In addition to the Apollo mission,
01:21 after the moon was delayed,
01:23 the largest small star sample brought back to earth,
01:25 and they also believe that the small star sample helps to understand the type of small stars that threaten the earth,
01:30 and reveal the mysterious face of early solar system.
01:34 NASA has been sailing for seven years.
01:39 Yesterday, a small star-laden Bennu sample was sent back to earth,
01:43 and landed successfully in the test training ground in Utah, US Department of Defense.
01:47 Staff randomly arrived at the scene to collect the sample,
01:50 and then transported to the test base of the Department of Defense by helicopter.
01:54 The staff behind the scene also relaxed and cheered for the result of the perfect landing of the sample.
02:00 A few hours later, the director of the US Astronautics and Space Science Department said at a press conference
02:05 that all the tasks in this mission are in the plan,
02:08 and praised the contribution of the team behind the scene.
02:11 It's just been amazing.
02:12 And I'll also just say what you saw executed today,
02:15 that precision, everything going just almost perfectly to plan,
02:20 that happens because of an incredible team.
02:23 Hundreds and hundreds of people.
02:25 NASA said that although the number of star samples obtained in this mission is small,
02:29 it can help to understand the type of small stars that may threaten the earth,
02:33 and how solar systems are formed,
02:35 how the earth becomes a habitable planet, and so on.
02:38 The sample has been sent to the Johnson Space Center in Houston.
02:43 NASA plans to announce the first round of research results next month.
02:48 [ Music ]
02:52 [ Silence ]
02:57 [BLANK_AUDIO]
Comments