If a massive asteroid races towards Earth, the solution seems to be uncomplicated; Cill a spaceship and close it. This is exactly what NASA made successful with the Darts mission in 2022. You have proven that this concept worked and has dramatically changed the orbit of the Asteroid Dimorphos. However, new research results show the terrifying possibility that an asteroid was hit in the wrong place, and they could only shift the effects!
This high-resolution view of Dimorphos was created by combining the last 10 full image images, which were recorded by Darts Didymos Enlightenment and asteroid camera for optical navigation (Draco) before the impact (Credit: NASA/John Hopkins)
Scientists from the University of Illinois have discovered that poorly targeted asteroid distraction could accidentally control room stones through dangerous regions in space that were known as “gravitational key holes”, which unfortunately still mean that they would only meet the earth for years or decades later!
A gravitational key hole is a small space area in which the gravity of a planet can change the orbit of a temporary asteroid so that it will return with this planet at a later date. Imagine it like a fairly funky pinball machine, in which hitting on the wrong bumper sends the ball back, which turns back into the pinball.
“Even if we deliberately push an asteroid with a space mission away from the earth, we have to ensure
To solve this problem, the Makadia team has developed “probability cards” that identify the safest places to meet every asteroid. Each point on the surface of an asteroid has a different probability of sending the asteroid after a kinetic impactor through a gravitational keyhole.
Creating these cards requires a detailed knowledge of the properties of the asteroid such as shape, surface features, rotation and mass. Ideally, this would be done with space mission to meet the asteroid and create high -resolution images and data. However, if an asteroid is discovered late with little time before the impact, scientists can only create preliminary, high -quality cards by distinguishing the floor basis alone.
The researchers have already created probability cards for well -examined asteroids such as Bennu, in which the crosshairs are marked the optimal impact zones. These cards explain the inevitable uncertainties in every space mission, since even the best targeted spaceship could miss its destination by several meters.
The Asteroid Bennu, which was recorded here by the Osiris Rex room vehicle from NASA, was assigned and made probability cards to determine the most suitable and lowest risk effects (loan: NASA/Goddard/University of Arizona)
While Dart’s goal, Dimorphos was selected, precisely because the DidymoS system is too solid to be distracted on a collision course with the earth, future asteroid threats will not be so forgiving. Real planetary defense missions require a high degree of precision planning.
The HERA mission of the European Space Agency, which is due to reach DART Impact location in December 2026, will provide valuable data to refine these techniques. So far we were really lucky. It was found that nothing important is on our way to us, but when we continue to explore the sky, one day we will discover an asteroid with the name of the earth! Thanks to Makadia and his team, we need to know exactly where we have to aim if we have to play a planetary defense … HOPEFUL!
Source: Pay attention to the keyhole: How to find the safest spots to distract a dangerous asteroid
Comments are closed.