Asteroids space rocks that may come and even hit — the Earth are continuously tracked by NASA.
So should we worry about them — and what could happen if one struck our world?
Most of these are located in the Asteroid Belt — a ring that lies between the orbits of Mars and Jupiter.
It is believed that asteroids are debris left over in the formation of the world about 4.6 billion years back.
Some can be quite big, but others may be tiny — even as small as a grain of sand — due to the smaller size, asteroids lack the gravitational pull to form themselves into a sphere — meaning that they normally have a rugged, irregular look.
Once an asteroid crashes into the Earth, it is called a meteorite — and it can result in potentially huge harm, depending on the size.
By way of instance, it was an asteroid that wiped out the dinosaurs, since the impact threw up a dust cloud blocking out the sun and destroying life.
To this day, the crater, called Chicxulub, is present in Mexico.
At the moment, experts said it introduced the identical amount of energy as a tiny atomic weapon.
That is the reason why the space agency has introduced ts ‘historical’ plan to divert any space rocks going for our world.
What are specialists doing to stop asteroids from causing destruction?
Nasa has stated they’re planning to Smash on a spaceship in a rehearsal mission.
The organization has also warned it is “not a matter of if — when” we’ll be forced to take care of an asteroid slamming into the planet’s surface.
As many stress what the world may look like when a celestial body hit our world, astrophysicist Lord Martin Reese warned that the government should spend asteroid defense.
On February 2, 2017, an asteroid known as BS32 hurtled past our world at about 8.30pm.
Happily, it flew past around 100215 kilometers (161,280kilometers) from our world, according to distance boffins.
A number of the thousands of Athens are classed as “potentially hazardous” because of the proximity to Earth.
Worryingly, 2017 BS32 was just spotted days until it passed us. It is the fourth Asteroid to pass according to asteroid watchers that are eagle-eyed.
However, these close encounters are more common than you may think and investigators in Nasa are keeping tabs on any strays in its Jet Propulsion Laboratory.
When did 2015 BN509 fly past Earth and can it hit later on?
Nasa has cautioned that the peanut-shaped BN509 is “potentially hazardous” so it could come very near Earth in its future orbits.
It had been so near our world it made it within the ring of satellites at an altitude of 9,000 kilometers over the eastern Pacific Ocean.
The gap is only one tenth of the space between us and the moon, but scientists have ruled out the chance of impact.
However, the stone, which is 370-metres in diameter, will fly again on April 13, 2036.
When it hit, it would make an explosion 65,000 times as powerful as the atomic bomb dropped on Hiroshima.
What’s International Asteroid Day?
Made by Queen guitarist Brian May in 2015, the annual event aims to increase awareness about asteroids to protect humankind from harmful impacts in future.
So, if we are worried about asteroids?
According to the organization, about an asteroid, the size of a vehicle hits the air, until it reaches the surface burning up.
But, asteroids big enough to wipe out life — that would have to be more than a quarter of a mile broad, according to Space.com — just hit once every 1,000 centuries.
The one to look out for is named Gliese 710. When it arrives at Earth (in 1.35million years), it’s expected to pull asteroids in external passages of the Solar System to the Earth, using a potentially devastating effect.
So, the possibility of a huge asteroid crashing into the Earth during our life is quite small.
But, scientists warn there’s always the chance of an asteroid that hasn’t been seen.
With that said, technology is continually improving — so experts expect in future, an asteroid could be able to be redirected in the event of an emergency.