一句话概括 – NASA’s OSIRIS-REx spacecraft is returning to the US with samples from the Bennu asteroid, which are expected to provide insights into the formation of the solar system, although the chances of Bennu colliding with Earth in 2182 are estimated to be very low and the impact would be less catastrophic than the event that caused the extinction of the dinosaurs.
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- NASA’s OSIRIS-REx spacecraft is returning to the US with samples from the Bennu asteroid.
- The spacecraft successfully gathered rocks and dust from Bennu’s surface in 2020.
- This mission marks NASA’s first attempt to collect samples from an asteroid.
- The spacecraft is scheduled to land in the Utah desert on Sunday.
- The samples brought back from Bennu are expected to provide valuable insights into the formation of the sun and planets approximately 4.5 billion years ago.
细节
NASA’s OSIRIS-REx spacecraft, launched in 2016, is returning to the US with samples from the Bennu asteroid.
The spacecraft successfully gathered rocks and dust from Bennu’s surface in 2020.
This mission marks NASA’s first attempt to collect samples from an asteroid.
The spacecraft is scheduled to land in the Utah desert on Sunday.
The samples brought back from Bennu are expected to provide valuable insights into the formation of the sun and planets approximately 4.5 billion years ago.
Bennu was discovered by NASA in 1999.
It is estimated to have formed within the first 10 million years of the solar system.
Bennu has a diameter of approximately 490 meters.
It weighs about 85.5 million tonnes.
During the mission, the OSIRIS-REx spacecraft briefly touched the surface of Bennu to collect a sample.
The spacecraft departed from the asteroid in October 2020.
This touchdown maneuver was a critical part of the mission’s success.
Bennu passes near Earth every six years.
It has had three close encounters with our planet in 1999, 2005, and 2011.
Scientists associated with the OSIRIS-REx team have raised the possibility that Bennu could potentially enter Earth’s orbit and collide with our planet by September 2182.
However, the chances of this happening are estimated to be 1 in 2,700, or 0.037%.
If Bennu were to impact Earth in 2182, it would release an enormous amount of energy—approximately 1,200 megatons.
To put this into perspective, the impact would be equivalent to 24 times the energy of the most powerful nuclear weapon ever built.
However, this energy release would be significantly less than the asteroid impact that caused the extinction of the dinosaurs, estimated to be as powerful as 10 billion atomic bombs.
The OSIRIS-REx spacecraft is returning to the US with samples collected from the Bennu asteroid.
These samples are expected to provide valuable insights into the formation of the solar system.
While there is a very remote possibility of Bennu colliding with Earth in 2182, the impact would be far less catastrophic than the event that led to the extinction of the dinosaurs.
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A spaceship hovering above a small rocky asteroid, collecting samples with a robotic arm.
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| 天空新闻网 |
|---|
| – NASA’s OSIRIS-REx spacecraft is returning to the US with samples from the Bennu asteroid. |
| – |
| The spacecraft collected rocks and dust from Bennu’s surface in 2020. – |
| The mission was launched in 2016 as NASA’s first attempt to collect samples from an asteroid. – |
| The spacecraft will land in the Utah desert on Sunday. – NASA believes that the samples from Bennu will provide valuable insights into the formation of the sun and planets around 4.5 billion years ago. |
| – Bennu was discovered by NASA in 1999 and is estimated to have formed within the first 10 million years of the solar system. – |
| The asteroid has a diameter of approximately 490m and weighs 85.5 million tonnes. |
| – |
| The OSIRIS-REx spacecraft briefly touched the surface of Bennu to collect a sample before leaving the asteroid in October 2020. |
| – Bennu passes near Earth every six years and has had three close encounters with the planet in 1999, 2005, and 2011. |
| – Scientists with the OSIRIS-REx team have suggested that Bennu could potentially enter Earth’s orbit and collide with the planet by September 2182. – |
| The chance of Bennu hitting Earth in 2182 is estimated to be 1 in 2,700, or 0.037%. – |
| If Bennu were to impact Earth, it would release 1,200 megatons of energy, which is equivalent to 24 times the energy of the most powerful nuclear weapon ever built. |
| – However, the energy released by Bennu would be significantly less than the asteroid that caused the extinction of the dinosaurs, which was estimated to be as powerful as 10 billion atomic bombs. |
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