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By TechThop Team
Posted on: 27 Jul, 2022
The collection of data about asteroids orbiting around the Earth is extremely important. The data allows scientists to prepare risk assessment models and determine whether Earth will be struck by an asteroid within the next few years.
This is why NASA, ESA, JAXA, and other space agencies monitor more than 29,000 near-Earth objects. The problem, however, is that there is one. It was discovered by looking at the night sky that all of these asteroids were discovered.
The daytime gets no observations, and half of the asteroids around the Earth have never been identified. The Pan-STARRS observatory is now introducing a new method of asteroid hunting.
Several asteroid approaches have been spotted mere hours before they made their closest approach. If these crashed on Earth, there would have been a catastrophe. Scientists weren't able to notice a small asteroid called 2022 EB5 exploding in the sky near Norway until two hours earlier in March 2022.
Thankfully, it was small. It's mostly due to the Sun's glare that it's impossible to observe asteroids during the day. In addition, this makes the Earth extremely vulnerable to asteroids that may appear from the wrong side and cause a massive disaster if they strike.
If astronomers learn about these asteroids on time, space agencies like NASA can try and deflect or destroy them before they impact.'When you take an image, your background is much brighter than when you have a high noise background,' Scott Sheppard, an astronomer at Carnegie Institution for Science, explained to The Verge.
Despite this, there is still a solution. Currently, Sheppard is working on one. There is a method called the 'Twilight method'.
A courageous experiment is being conducted at the Pan-STARRS observatory. Observations of the sky are conducted 10-minutes before sunrise and 10-minutes after sunset every day by astronomers who brave the Sun.
Despite the problems caused by the sunlight, seeing the image is not impossible as it is during the daytime. I've been surprised at how successful this has been. It has been discovered for the first time that an asteroid orbits the Sun closer than Venus thanks to the Blanco 4-meter telescope in Chile.
The task is not easy, however. Spotting very small dots in an image where Sun glare exists is difficult. Additionally, even if an asteroid is spotted, the period of 10-15 minutes does not allow enough data to be collected.
To determine if an asteroid is potentially hazardous to the Earth, scientists must spend days trying to observe one little dot in the sky. Nevertheless, this is a good starting point and will reveal a great many asteroids that were previously unknown.
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