NASA asteroid missions can save Earth AND publish its history

NASA asteroid missions can save Earth AND publish its history.jpgsignature16611db0e942a7a3d689d7598df5439e

Asteroids are like the remnants of the early solar system, capable of revealing mysteries about the origin of our planet. But they could also end life on Earth. Now two missions, Lucy and DART (Double Asteroid Orienteering Test) will provide further insight into these two features - with DART even attempting to redirect a lunar orbit around an asteroid.

Space rocks are generally considered as asteroids if they are larger than about 1km in size and made of “non-volatile” materials - chemicals that can be easily moved. Carbon monoxide, for example, is volatile because it decomposes at a temperature of -191 ° C. However, iron, with a vaporization point of 2,862 ° C is volatile.

This is a little different from comets. Asteroids are more commonly found in the Inner Solar System, and comets with them volatile-rich shape tends to hide in the outer part, far from the heat of the sun. About 500,000 asteroids have been cataloged so far, and many have their own small asteroids.


We use cookies to ensure that we give the best user experience on our website. If you continue to use this site we will assume that you agree. More information