Why is NASA crashing a spacecraft right into a innocent asteroid at 14,000mph? | Science & Tech Information



A innocent asteroid thousands and thousands of miles away is about to be rammed by a NASA spacecraft at 14,000mph. Why? The destiny of the human race might in the future rely on doing the identical.

It has been 66 million years since an asteroid crashing into the Earth introduced an finish to the reign of the dinosaurs, scientists say, and they’re eager to keep away from an identical ending for humanity.

Sky Information takes a have a look at NASA’s newest experiment – a $325m (£301m) planetary defence take a look at – and solutions some key questions on the way it might show helpful down the road.

What’s the Dart spacecraft?

Dart – a snappier nickname than Double Asteroid Redirection Take a look at – is actually a battering ram the dimensions of a small merchandising machine.

It faces sure destruction within the fulfilment of its aim.

Dart weighs 570kg and has a single instrument: a digital camera used for navigating, focusing on and chronicling its closing demise.

The place is the spacecraft going?

Dart is headed for a pair of asteroids about seven million miles from Earth. Its goal is known as Dimorphos, which is the smaller offspring of Didymos (that is Greek for twin).

Dimorphos is roughly 525 ft (160 metres) throughout and it orbits the a lot bigger Didymos at a distance of lower than a mile (1.2km).

NASA insists there is a zero likelihood both asteroid will threaten Earth – now or sooner or later. That is why the pair was picked.

The spacecraft’s navigation is designed to tell apart between the 2 asteroids and, within the closing 50 minutes, goal the smaller one.

What occurs on impression?

“This actually is about asteroid deflection, not disruption,” stated Nancy Chabot, a planetary scientist and mission group chief at Johns Hopkins College, which is managing the hassle.

“This is not going to explode the asteroid. It is not going to place it into a lot of items.”

As an alternative, the impression will dig out a crater metres in measurement and hurl some two million kilos of rocks and dust into house.

Why are scientists doing this?

The impression must be simply sufficient to nudge the asteroid right into a barely tighter orbit round its companion house rock – demonstrating that if a killer asteroid ever heads our means, we would stand a combating likelihood of diverting it.

Cameras and telescopes will watch the crash, however it can take months to search out out if it truly modified the orbit.

Observatories will observe the pair of asteroids as they circle the solar, to see if Dart altered Dimorphos’ orbit.

In 2024, a European spacecraft named Hera will retrace Dart’s journey to measure the impression outcomes.

Though the meant nudge ought to change the moonlet’s place solely barely, that may add as much as a serious shift over time, in keeping with Ms Chabot.

“So in case you have been going to do that for planetary defence, you’d do it 5, 10, 15, 20 years prematurely to ensure that this system to work,” she stated.



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