Asteroids are the small rocky bodies in the inner solar system that orbit the sun. Millions of them fly through space and their collisions – so-called impact events – have played a significant role in the design of many planets. NASA is constantly observing the heavens and categorizes near-earth objects (NEOs) as potentially dangerous objects (PHOs) if they could pose a threat to life on Earth.
The Cosmochemist Dr. published in her 2018 book "Catching Stardust," which explains how the space agency can not track every stone in the sky.
While those who have the ability to slip through NASA's defense will not end life on Earth, they have the potential to wipe out cities and hit millions of people.
Dr. Starkey said: "In the event that we are at most a few years away from an imminent impact, we would need to focus on the less precise and drastic measures of distraction or destruction.
"It is still the case that the earlier we act, the better.
"If we want to blow something up, we have to think about the splinter that would be caused by an explosion, how big it will be and where it will end.
"Starting from the simple ending of the & # 39; drastic & # 39; On the other hand, we could think of a great kinetic impactor – like a cannonball – projecting the object either to dramatically change its course or to smash it to pieces.
"To blunt about it, let's get that thing out of the way, and if that causes it to break, then it should be.
Dr. However, Starkey sent a warning to NASA, revealing its plan. C This could be detrimental.
She added, "NASA suggests that a simple kinetic impactor is the most sophisticated method of deflecting a NEO, as long as it consists of a small, single body.
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" However, if we object during this Depending on the composition of the space object, it may shatter into tiny dust-sized parts that may rain down to the ground, or it may be more difficult to predict. ]
can shatter into just a few large parts that move toward the earth Impact could make things worse.
"Additionally a rubbl The stacked-type chamber body from which the asteroid Itokawa visited by the Hayabusa Mission as one is considered, the energy of a kinetic impact – even a large one – would more easily absorb.
On the other hand, an object of similar size, which would be made of stronger material, would absorb Consolidated rock is less likely to absorb the energy of an impact and therefore its orbit could be expected to shift more easily.
In the same book, Starkey claimed that one day we will experience a "life-destroying" asteroid event, similar to the one that wiped out the dinosaurs.
She added: as a human being could have died out if an asteroid collided with the earth.
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"The prospect of our planet suffering a devastating, life-destroying impact by a comet or an asteroid may sound highly unlikely, but it is almost certain sometime in the future.  "The question is when?"
The 101955 Bennu asteroid, formally known as the 1999 RQ36, is a potentially dangerous object listed in the Sentry Risk Table with the second highest cumulative rating of is the Palermo Technical Impact Hazard Scale.
Researchers have already warned the space agency that it could be devastating if they did not act.
According to a study by the scientist Maria Eugenia Sansaturio, the 1999 asteroid could affect the Earth.
Sansaturio warned in a report for the solar system journal Icarus that the likelihood of an asteroid attack was good.
Four asteroids pose a threat
The overall likelihood of impact of the 1999 Asteroid RQ36 can be set to 0, 00092, which is about one in a thousand opportunities. What is most surprising, however, is that more than half of that chance (0.00054) equals 2182. "
Like all asteroids that pose a threat to life on Earth, NASA has a plan to combat it.
The space agency is currently conducting a mission with its spacecraft OSIRIS-REx to find out more about the rock.
The spaceship pursued Bennu for two years before circling it for another two years and sampling.
Then, in 2023, it will fly back to Earth to allow scientists from all over the world to study.
The mission team is particularly interested in learning the role that asteroids like Bennu – dark, primitive, and apparently carbon-rich – could have played in creating life on Earth.
It will also help scientists to refine the chances of a strike on Earth.