Why are astronomers unable to find some asteroids approaching Earth?

This was admitted by NASA Director of Space Studies Paul Chouds, so why did it happen? – Because the asteroid 2021 SG, like the asteroid “Chelyabinsk”, flew towards the Earth on the side of the sun, where it is impossible to recognize it in the background of our star if its dimensions are modest.

Scientists believe that its length is not more than 94 meters and its width is not less than 42 meters, but its speed was 68,000 kilometers per hour, and if the asteroid had fallen on Canadian soil, it would have caused severe damage, and almost caused a local tragedy if it fell on a Canadian city, as it did.After an asteroid fell 3,600 years ago on the cities of Sodom and Gomorrah, killing 8,000 people, the asteroid crosses Earth’s orbit once every 27 months.

It is worth noting that astronomers last year did not notice the asteroid 2020 VT4 with a diameter of 10 meters, which approached Earth from a distance of only 380 km and flew over the British Isles. Pitcairn in the South Pacific. And it must have collided with the International Space Station, which flies at an altitude of between 340 and 430 km, and luckily the station was at that time over an area of ​​the South Atlantic.

And in 2018, astronomers noticed the asteroid 2009 FH with a diameter of 20 meters, just a day before its dangerous approach to Earth, and the asteroid flew at a high satellite altitude (32,000 kilometers).

And all these asteroids, including the asteroid “Chelyabinsk”, which fell on the Urals region of Russia in 2013, arrived from the direction of the sun, which makes it difficult for astronomers to detect them.

Humanity is still under threat until 2026, when NASA will launch the infrared-powered NEO Surveyor space telescope, capable of identifying dangerous asteroids arriving from the sun millions of kilometers away, day or night. night, and against the background of the sun.