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101955 Bennu (provisional designation 1999 RQ 36) is a carbonaceous asteroid in the Apollo group discovered by the LINEAR Project on 11 September 1999. It is a potentially hazardous object that is listed on the Sentry Risk Table and has the highest cumulative rating on the Palermo Technical Impact Hazard Scale. [9]
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The spacecraft launched on September 8, 2016 and arrived at Bennu in December 2018. After mapping the asteroid for almost two years, it collected a sample from the surface on October 20, 2020. The ...
During this “TAG event,” the spacecraft’s arm sank far deeper into the asteroid than expected, confirming that Bennu’s surface is incredibly weak. Now, scientists have used data from OSIRIS-REx to revisit the TAG event and better understand how Bennu’s loose upper layers are held together.
AMEA: Asia, Middle East and Africa; America (AMER): Usage varies; it may refer to just the United States of America, or just North America, or all of North and South America combined, or some other combination. Americas (AMS or AMERS): Usage varies; often refers to all of North and South America combined. AMS: Andorra, Monaco, San Marino [1]
South America ranks fourth among all continents in area (after Asia, Africa, and North America) and fifth in population (after Asia, Africa, Europe, and North America). [1] The border between North and South America is at some point in the Isthmus of Panama.
The border between North America and South America is at some point on the Darién Mountains watershed that divides along the Colombia–Panama border where the isthmus meets the South American continent (see Darién Gap). Virtually all atlases list Panama as a state falling entirely within North America and/or Central America. [116] [117]
Southern Asia [c] 1,989,452,478: 25.2% 1.32% 9 0 0 0 Eastern Asia: 1,663,696,923: 21.0% 0.57% 5 1 0 2 Sub-Saharan Africa [d] 1,137,938,708: 14.4% N/A 48 1 1 4 South-eastern Asia: 675,796,065: 8.5% 1.20% 11 0 0 0 Latin America and the Caribbean [e] 656,098,097: 8.30% N/A 33 0 7 12 Eastern Africa [f] 461,141,845: 5.8% 2.89% 18 1 0 4 South America ...