OSIRIS-REx, a 20-foot-long unmanned NASA spacecraft, arrived at the asteroid Bennu at noon on Dec. 3.

Bennu is a “near-earth” asteroid that comes close to Earth every six years. It has a diameter taller than the Empire State Building and zooms through space at a speed of 63,000 mph.

The arrival came exactly one week after NASA’s InSight lander successfully touched down on Mars.

OSIRIS-REx began its journey in 2016 when it launched from Cape Canaveral, Florida.

In the two years since its launch, it has travelled over 2 billion kilometers and is now 125 million kilometers from Earth.

Its goals are to map the asteroid, analyze its makeup and return to Earth with samples from its surface.

NASA researchers believe the data and samples collected by the spacecraft will shed light on the formation of the solar system and possibly even the origins of life on our planet. They say organic life may have come to the planet through asteroids similar to Bennu.

Knowing the physical and chemical properties of the object will also be important in the event that it ends up on a collision course toward Earth, which researchers say may be possible in the 22nd Century.

NASA said arrival at Bennu is only the beginning of OSIRIS-REx’s journey. It will now map out the surface of the asteroid and find the best spot to land and collect samples. If all goes well, it will return to Earth in 2023.

Brian Cafferty is a senior majoring in journalism.



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