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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...
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Underwater snow gives clues about Europa's icy shell

Europa's ice shell could be purer than previously thought. Research shows that a kind of underwater snow -- which on Earth freezes purer than other ice -- is likely to be common inside Jupiter's moon. The findings will help mission scientists working on NASA's Europa Clipper spacecraft, which will use an ice penetrating radar to look beneath the ice shell to see whether Europa's global ocean could be hospitable to life.

from Space & Time News -- ScienceDaily https://ift.tt/RQaM1rI
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