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Asteroid deflection technologies

Asteroid deflection technologies are methods and strategies developed to prevent potential impacts of asteroids with Earth. These technologies aim to alter the trajectory of an asteroid to ensure it does not collide with our planet Following the success of NASA's DART (Double Asteroid Redirection Test) mission, discussions about planetary defense and asteroid deflection strategies are increasingly prominent. Here are some principal methods and how they work: 1. Kinetic Impactor:    - How It Works: This method involves sending a spacecraft to collide with an asteroid at high speed. The impact changes the asteroid's velocity and trajectory, ideally enough to avoid a collision with Earth.    - Example: NASA's DART (Double Asteroid Redirection Test) mission successfully demonstrated this technique by impacting the moonlet Dimorphos in 2022. 2. Gravity Tractor:    - How It Works: A spacecraft positioned near an asteroid uses its gravitational pull to...

Do we really want a nationalistic future in space?

The annals of science fiction are full of visions of the future. Some are techno-utopian like "Star Trek" in which humanity has joined together in peace to explore the cosmos. Others are dystopian, like the World State in "Brave New World." But many of these stories share one thing in common – they envision a time in which humanity has moved past narrow ideas of tribe and nationalism. That assumption might be wrong.

from Space Exploration News - Space News, Space Exploration, Space Science, Earth Sciences http://bit.ly/2VHXel9

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