Massive asteroids JF1, Apophis to graze Earth in 2020s; planetary defence courtesy NASA, ESA still underway

tech2 News Staff

The Earth is no stranger to close encounters with space rocks. Countless small asteroids are turned to smoke and dust in our atmosphere on a daily basis. Once a year or so, a car-sized asteroid might drop in and share the same fate.

The only real threat comes from asteroids and meteoroids that are a lot bigger, about the size of a football field, or even multiple football fields. A collision with these giant asteroids will, without a doubt, end badly for us. Thankfully, those events happen once in 2,000 years or so. But while these large asteroids will cause a tremendous amount of damage, humanity will still survive.

The ones you really want to watch out for are the extinction-level asteroid impacts. Space experts think they happen every few million years €" give or take a few ten thousand.

Currently, we have no way of escaping an impact that powerful, but there's work being done to give us that 'planetary defence' capability.


Also read: Killer asteroid obliterates New York in planetary defense simulation exercise

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