Wed. Dec 1st, 2021


Although Dimorphos is similar to many other near-Earth asteroids, the DART team chose it as a target because it is a junior member of an asteroid binary. It is called the “Moonlet” and it orbits its larger partner Didymos clockwise every 11 hours and 55 minutes. Dart will hit DeMarphos at an angle of about 17 degrees relative to its orbit, and scientists plan to measure how much its orbit will change. In other words, they can easily compare its speed with other nearby bodies. If they choose to strike a solitary asteroid, its orbital deviation will not become apparent year after year until it passes close to Earth. However, thanks to the proximity of its partners, any change in DeMarphos’ orbit can be determined within a few days.

“It’s a really smart and smart way, and it’s affordable. And it’s safe: you’re already orbiting this moon a little closer to the asteroid, “said Chabot. He and his team DART hope to shorten the asteroid’s orbit five to 15 minutes, making it only 11 hours and 45 minutes to orbit Didymos. NASA will consider a deviation of 73 seconds or more as a successful mission.

The asteroid pair will be close enough to Earth for telescopes to make precise measurements until March 2023. After that, they will travel farther, as part of their path around the sun will extend beyond the orbit of Mars. Although asteroids appear to be a single point of light from this distance, scientists will be able to measure how often the brightness of the reflected sunlight bounces from a proxy for the duration of the dimerphos in Didymos eggs.

These asteroids, like many others, and some meteorite-rock that enter Earth’s atmosphere নয় are not as dense and solid as billiard balls. These may be rocks, pebbles, and ice cubes that are loosely grouped together in an arrangement called “heaps of rubble” with an asteroid-like rock composition. Ryugu And Eros, And from Meteors erupting over Chelyabinsk, Russia, in 2013. In fact, the Dimorphos moonlet may have been created by orbiting Didymos. If Dimorphos is rubbly, the effects of DART can create a hole instead of inverting debris and significantly sniffing the asteroid. But that uncertainty is one of the reasons for the mission.

For more detailed inspections of the crash scene, visit the European Space Agency Hera The mission comes next. The spacecraft is scheduled to launch in 2024. When it reaches the asteroid age in 2026, its optical camera, leader tool, infrared scanner and two cubesat sidekicks will create detailed maps of the surface and structure of the dimmerphos.

If a dangerous asteroid really does hit Earth, hitting a spaceship বা or a “kinetic impactor” এটিthat is the only tool for human settlement. NASA, ESA, and other space agencies are also exploring other methods, such as pulling a spacecraft in a different direction as a “gravity tractor”, or forcing a nearby nuclear explosion away. (Nuking the asteroid itself carries the risk of failure, as it could turn it around.) A lot The rocks do not change their path too much.) “The kinetic impactor is the most mature of these techniques,” said Laurie Glaze, director of NASA’s Planetary Science Division, at a media briefing on Sunday.



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