Natalie Starkey is a cosmochemist who is concerned about protecting the earth for generations to come and is the author of the 2018 book "Catching Stardust". Within the text, Dr. Starkey discusses how asteroids – the millions of tiny rocky bodies that lurk into the inner solar system – could one day interrupt life on Earth. NASA constantly scans the cosmos and categorizes any near-Earth objects (NEOs) as potentially dangerous objects (PHOs) if they could pose a threat.
However, Dr. Starkey is worried that history may repeat itself, and thereby cosmic winter on earth, which could kill people in a few years.
She revealed how one of the most famous asteroids was almost twice the size of Barj Khalifa, which stands at 800 meters.
Dr. Starkey wrote last year: "As we saw earlier, the dinosaur killing effects were probably produced by an object with a mile in diameter (1
" While it failed to destroy the entire planet, it was really not food news for the dinosaurs or half of the species that existed at that time.
"In fact, a similar effect would eventually kill all people, if only then within a few years.  "Such a collision could easily have long-lasting, global cat astrophic effects on the planet's biosphere, created by the onset of an impactful winter. "
Dr. Starkey went on to explain how these conditions would affect people.
She added: "This is where the sun's rays are blocked by the surrounding dust and debris kicked up from the collision.
"Under these conditions, all lives that succeeded in escaping the direct effects of influence would struggle to find enough food and resources to survive long after. ] READ MORE: NASA warning about "raining nuclear weapons" hitting the earth revealed
about 2.5 times longer than the distance from the earth to the moon, about 580,000 miles. ”
Asteroid 101955 Bennu, formally known as 1999 RQ36, is a PHO listed on the Sentry Risk Table with the second height St cumulative grade on the Palermo Technical Impact Hazard Scale.
Investigators have already warned the space agency that it can be devastating if they do not act.
According to a study by researcher Maria Eugenia Sansaturio, the asteroid 1999 can affect the earth.  Dr. Sansaturio warned in a report for the solar system's magazine Icarus that there is a good chance that the asteroid will strike.
She told Universe Today 2010: "The total impact probability of the asteroid 1999 RQ36 can be estimated at 0.00092, about one to one thousand chances, but what is most surprising is that over half of that chance (0, 00054) corresponds to 2182. ”
However, NASA has a less destructive trait for Bennu.
The Space Agency is currently undertaking an assignment with its OSIRIS-REx spacecraft to find out more about the rock.
The spaceship spent two years chasing Bennu, before circling for another two years and taking samples.  Since 2023, it will blast back to Earth to allow scientists from around the world to study it.
The mission group is particularly interested in learning the role that asteroids such as Bennu – dark, primitive and apparently colloquial – may have played in creating life on earth.
It will also help scientists refine the odds of a strike on earth.