How dangerous can asteroids be to Earth? NASA revealed the fear
Space is full of objects like asteroids, comets, stars, planets, meteors, stars, galaxies and much more. There are instances when due to gravitational pull the earth attracts certain objects like asteroids and meteors and they crash on the earth. However, there is no potential harm from these objects unless they are large such as the asteroid that killed all the dinosaurs. Needless to say that the earth needs a defense system to prevent any kind of accident. NASA revealed that dinosaurs became extinct 65 million years ago as a result of a single asteroid strike or comet impact on Earth, but they also shared another possibility.
“The extinction of dinosaurs may have occurred 65 million years ago as a result of a single asteroid or comet impact, but it is also possible that they died out as a result of multiple comet impacts over one to three million years, the group of scientists has theorized recently. Paul Weisman of NASA’s Jet Propulsion Laboratory in Pasadena, Calif., one of the eight authors of the paper published in the British scientific journal Nature in 2011, said comet rains that occurred over time could lead to extinctions. Said in a report.
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Therefore, it is important to be alert and prepared because any similar strike will destroy the earth in an immeasurable manner and may even cause the extinction of humans. Yes, the potential for panic is very high.
With this objective, NASA launched the Double Asteroid Redirect Test (DART) mission in November 2021. DART is the world’s first planetary defense test mission dedicated to the investigation and demonstration of a method of asteroid deflection by altering the motion of an asteroid in space through kinetic effects.
“Dart will show that a spacecraft can autonomously navigate to a target asteroid and deliberately hit it – a method of deflection called kinetic impact. The test will provide important data to help better prepare for an asteroid that will could pose a risk of impact on Earth, should any ever be discovered,” NASA said.
LICIACube, a CubeSat that rides with Dart, provided by the Italian Space Agency (ASI), will be released prior to Dart’s impact to capture images of the impact and the resulting cloud of ejected matter. About four years after Dart’s impact, the ESA (European Space Agency) HERA project will conduct a detailed survey of both asteroids, with a special focus on the crater left by Dart’s collision and the precise determination of Dimorphos’ mass.
According to a report by TechExplorist, the fraction of asteroid populations that have survived since the formation of the Solar System have experienced numerous collisional, dynamical and thermal events that have shaped their structures and orbital properties. Due to the inability to recreate impact conditions in laboratory experiments, the observed regime of low-gravity, low-power impacts has so far remained largely unexplored. Furthermore, the very large time scales involved in the development of the crater (more than a few hours in Dart’s case) have made it impossible to numerically simulate these impact processes until now.
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Missions such as JAXA’s Hayabusa 2 artificial impact experiment on the surface of asteroid Ryugu have demonstrated that an asteroid’s internal structure can be very loose. But, earlier simulations of the DART mission impact assumed a solid interior of its asteroid target Dimorphos.
“This could substantially change the outcome of the Dart and Dimorphos collision, which is due this coming September,” explains study lead author Sabina Radukan of the Institute of Physics and the National Center of Competence in Research Planets, as described by TechExplorist. Quoted by.
The report further states that in 2024, the European Space Agency (ESA) will send a space probe to Dimorphos as part of the space mission HERA. The objective of the mission is to visually examine the outcome of the Dart probe impact.