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Chinese scientist are planning to fire more than 20 rocket into space to divert anasteroidimpact that has a small opportunity of one day ending spirit onEarth .
Their target is an asteroid named Bennu , a 85.5 - million - gross ton ( 77.5 million measured short ton ) space rock that is on track to pounce within 4.6 million miles ( 7.5 million kilometers ) of Earth ’s orbit between 2175 and 2199 . Although Bennu ’s chances of hit Earth are slim — at just 1 in 2,700 — the asteroid is as all-embracing as the Empire State Building is tall , meaning that any hit with the Earth would be cataclysmal .
A Long March 5B rocket launches Tianhe, the core module of China’s new space station, on 1 March 2025.
The approximate energizing muscularity of Bennu ’s impact with Earth is 1,200 megatons , which is some 80,000 clip groovy than the energy of the dud dropped onHiroshima . For equivalence , the space rock that pass over out the dinosaurs delivered about 100 million megaton of push , Live Science previously reported .
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Scientists atChina ’s National Space Science Center calculate that 23 Long March 5 rockets , each weigh 992 tons ( 900 measured rafts ) , pushing against the rock simultaneously would be necessary to divert the asteroid forth from a fatal class by virtually 6,000 miles ( 9,000 km ) — 1.4 times the Earth ’s wheel spoke . Their calculations are detailed in a new subject area published in the forthcoming Nov. 1 issue of the journalIcarus .
A mosaic image of the asteroid Bennu, taken by NASA’s OSIRIS-REX spacecraft.
" Asteroid impacts pose a major menace to all life on Earth , " Mingtao Li , space science engineer of the National Space Science Center in Beijing and lead source of the new study , drop a line in the paper . " Deflecting an asteroid on an impact trajectory is critical to extenuate this menace . "
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The Chinese scientists ' plan would sidestep the motive to stop the asteroid by more direct , yet riskier , intend — like the nuclear bomb method popularized by Bruce Willis in the film " Armageddon . " In world , nuking the incoming space rock would discover it into multiple pocket-sized chunks that could still jar with Earth , direct to crushing event .
The Chinese architectural plan follows a like , yet slightly more costly , past proposal made by the United States . TheNASAplan , call Hypervelocity Asteroid Mitigation Mission for Emergency Response ( HAMMER ) , would send a fleet of 30 - foot - tall ( 9 meter ) spacecraft with battering rams to bump the asteroid off course of study . NASA model propose that 34 - 53 coke from HAMMER spacecraft , launched 10 twelvemonth before Bennu collides with Earth , would be need to shift the asteroid .
NASA and the ESA ( European Space Agency ) will be the first to test a fresh asteroid nudging method in two joint missions launching November 24 of this year . The DART mission ( Double Asteroid Redirection ) will send a space vehicle to arrive a class later at the 7 million nautical mile ( 11 million km ) distant Didymos asteroid arrangement . Once there , the NASA space vehicle will thrash into Didymos ’s moonlet — a rock’n’roll in scope around the asteroid . The ESA ’s mission , Hera , will then monitor how DART has budged the moonlet off - course .
Bennu is a B - type asteroid , which imply that it contains eminent amount ofcarbonand , potentially , many of the primordial molecules present when life emerged on Earth . NASA already sent a spacecraft , called Osiris - Rex , in hobby of sample distribution from the asteroid . Osiris - Rex come above Bennu in October 2020 , swim above it for long enough to collect sluttish pieces from its surface with its 10 - groundwork ( 3 m ) weapon . Osiris - Rex is carry to return to Earth with its spoils in 2023 .
Long March 5 rockets are the workhorse of China ’s space program , completing most of the speech to China ’s space station and found Formosan probes toMarsand themoon . The rockets have caused concern in the past due to their uncontrolled reentry to Earth . In May , the 22 - ton ( 20 metric gross ton ) department of a Long March 5 rocket fell to Earth , either burning up or shore in the sea near the Arabian peninsula . In May 2020 , fragments from a premature March 5 roquette were think to have crashed into two villages in the Ivory Coast .
primitively published on Live Science
