Their target is the asteroid Bennu, an 85.5 million tonnes (77.5 metric tonnes) space rock that will plunge within 4.6 million miles (7.5 million kilometers) of Earth’s orbit between 2175 and 2199. Bennu can collide with Earth, but the asteroid is slim, 1/2700, and as wide as the Empire State Building. In other words, a collision with the earth will be a catastrophe.
The estimated kinetic energy of Benne’s collision with the Earth is 1,200 megatons, which is about 80,000 times the energy of the bomb dropped. Hiroshima.. For comparison, space rock, which wiped out dinosaurs, provided about 100 million megatons of energy. Live science previously reported..
Scientists at the National Center for Space Sciences in China say that each must simultaneously push a 992 ton (900 metric ton) Long March 5 rocket to divert the asteroid nearly 6,000 miles (9,000 km) from its deadly course. I calculated. — 1.4 times the radius of the earth.Their calculations are detailed in a new study published in the next November 1st issue of the journal. Icarus..
“Asteroid collisions pose a major threat to all life on Earth,” wrote Min Tao Lee, a space science engineer at the National Center for Space Sciences in Beijing and the lead author of the new study. “Deflection of asteroids in collision orbit is important to mitigate this threat.”
Chinese scientists’ plans will avoid the need to stop the asteroid by more direct but more dangerous means, such as the atomic bombing method popularized by Bruce Willis in the movie “Armageddon.” In fact, processing incoming space rock with nuclear weapons breaks it into smaller chunks that can still collide with the Earth, with catastrophic consequences.
China’s plans follow similar, but slightly more expensive, past proposals made by the United States. NASA’s plan, called the Ultrafast Asteroid Mitigation Mission (HAMMER) for Emergency Response, sends a fleet of 30-foot (9-meter) high spacecraft with a battering ram to take the asteroid off course. I will. NASA simulations suggest that moving an asteroid requires 34-53 hits from the HAMMER spacecraft launched 10 years before Bennu hits Earth.
Bennu is a B-type asteroid. That is, it contains a large number of asteroids. carbon And, potentially, many of the primitive molecules that exist when life appears on Earth. NASA has already sent a spacecraft called OSIRIS-REx to track samples from asteroids. OSIRIS-REx arrived on Bennu in October 2020 and floated on Bennu with a 10-foot (3 m) arm long enough to collect loose debris from the surface. OSIRIS-REx is expected to return to Earth in 2023 with its plunder.
The Long March 5 rocket is the flagship product of China’s space program, completing most of its deliveries to China’s space stations and launching China’s spacecraft. Mars And that Month.. Rockets have raised concerns in the past due to uncontrolled re-entry into Earth. In May, a 22 ton (20 metric ton) section of the Long March 5 rocket fell to Earth and either burned out or landed in the waters near the Arabian Peninsula. In May 2020, it was believed that the previous March 5 rocket debris collided with two villages in Côte d’Ivoire.
Originally published in Live Science
China wants to launch an asteroid-deflecting rocket to save Earth from Armageddon
Source link China wants to launch an asteroid-deflecting rocket to save Earth from Armageddon