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NASA Chooses Elon Musk’s SpaceX For World First Mission To Deflect ‘Hazardous’ Moon

NASA has chosen SpaceX for a daring mission to crash into a “hazardous” asteroid’s moon – knocking it off course.

The rocket firm – helmed by Tesla chief Elon Musk – will begin the mission in June 2021.

But SpaceX won’t actually intercept Didymos’ small “moonlet” until October 7, 2022, when the asteroid will be roughly 7million miles from Earth.

Nasa has been mulling the Double Asteroid Redirection Test (DART) mission for years.

Nasa describes DART as “the first-ever mission to demonstrate the capability to deflect an asteroid by colliding a spacecraft with it at high speed”.N

asa wants to send up a DART probe to deliberately crash into the asteroid

Simply put, Nasa and SpaceX are going to send a probe into space that will “crash into” asteroid Didymos’ moon.

“DART is a planetary defense-driven test of one of the technologies for preventing the Earth impact of a hazardous asteroid: the kinetic impactor,” Nasa explained.

“DART’s primary objective is to demonstrate a kinetic impact on a small asteroid.

“While Didymos’ primary body is approximately 800 meters across, its secondary body (or “moonlet”) has a 150-meter size, which is more typical of the size of asteroids that could pose a more common hazard to Earth.”

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Didymos is officially classified as a “potentially hazardous asteroid” and “near-Earth object”, which means it’s high on Nasa’s list of space priorities.

It was first discovered by the University of Arizona in 1996, using a telescope at the Kitt Peak National Observatory.

It orbits the Sun once every 770 days, and rotates quickly every 2.26 hours.

Nasa’s DART probe will “deliberately crash itself” into the moonlet at about 6km/s.

The probe will be aided by an onboard camera and autonomous navigation software.

What’s the difference between an asteroid, meteor and comet?

Here’s what you need to know, according to Nasa…

  • Asteroid: An asteroid is a small rocky body that orbits the Sun. Most are found in the asteroid belt (between Mars and Jupiter) but they can be found anywhere (including in a path that can impact Earth)
  • Meteoroid: When two asteroids hit each other, the small chunks that break off are called meteoroids
  • Meteor: If a meteoroid enters the Earth’s atmosphere, it begins to vapourise and then becomes a meteor. On Earth, it’ll look like a streak of light in the sky, because the rock is burning up
  • Meteorite: If a meteoroid doesn’t vapourise completely and survives the trip through Earth’s atmosphere, it can land on the Earth. At that point, it becomes a meteorite
  • Comet: Like asteroids, a comet orbits the Sun. However rather than being made mostly of rock, a comet contains lots of ice and gas, which can result in amazing tails forming behind them (thanks to the ice and dust vapourising)
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The DART impact is expected to take place on October 7, 2022

Nasa hopes that the collision will change the speed of the moonlet in its orbit around the main Didymos asteroid by a fraction of one percent.

This should be enough to measure using telescopes in Earth, allowing Nasa to track the success of the mission.

Fortunately, Didymos isn’t destined to hit Earth anyway – but is deemed “hazardous” due to its proximity to our planet.

But Nasa proves that its technique could work, asteroid deflection could serve as a vital “planetary defence” system for future generations.

The mission won’t be cheap: it’ll cost Nasa $69million (£53million) to launch.

But that’s a small price to pay for saving humanity, of course.

Source: UK Sun

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