Planetary defense is the effort to monitor and protect Earth from asteroids, comets and other objects in space.
Earth 's gravity attracts more than a hundred tons (more than 90 metric tons) of small objects and dust from space daily, according to NASA .
Earth's atmosphere , which is thick and protective compared with the more exposed surfaces of Mercury or the moon , mitigates the dangers of these small collisions.
Invisible asteroids could strike Earth at any MINUTE, experts warn | Daily Mail Online
It was the biggest asteroid to strike Earth in more than a century, yet no one saw the Chelyabinsk meteor coming.
When the space rock smashed into western Russia in February 2013 it generated a shockwave as strong as 35 Hiroshima atomic bombs, leaving more than 1,600 people injured.
JWST accidentally discovered a new asteroid during calibration | SYFY WIRE
There is plenty to be afraid of in this world, there are cocaine addled bears and the potential threat of increasingly intelligent machines , but at least those are terrestrial concerns. They are the sorts of problems we create and, hopefully, find our way through.
Fortunately, the search for asteroids just got a little bit easier, thanks to an unintended benefit of the James Webb Space Telescope.
Humans Could Go the Way of the Dinosaurs - Nautilus
The rate of an asteroid larger than 3 miles across striking the Earth is approximately once every 6 million years.
A substantial collision is bound to happen again. We don't know where or when. But it will happen. Are we ready? No. Not in the slightest. But for the first time in the planet's history, we have arrived at a point in time where we could do something to alter its astronomical fate.
Asteroid 2023 CX1 glows as 'beautiful' fireball over Europe
Planetary defense: Protecting Earth from space-based threats https://t.co/Ptu6811SBv https://t.co/TVzZ4ktC8i SPACEdotcom (from NYC) Thu Feb 16 16:11:18 +0000 2023
Chelyabinsk meteor explosion was a planetary defense wakeup call https://t.co/9lYVryXOIn https://t.co/Kt3B2V5Jpq SPACEdotcom (from NYC) Wed Feb 15 12:03:50 +0000 2023
2 Fast 2 Furious! When NASA's #DARTMission smashed into an asteroid as a test of planetary defense, Webb was ready… https://t.co/3Xjjry0UNd NASAWebb (from Lagrange Point 2) Wed Feb 08 16:02:06 +0000 2023
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