Space Weathering on Asteroids as Reason for their Disintegration
All surfaces of rocky bodies in our planetary system are exposed to a certain bombardment of (tiny) bits of rocks, so-called meteorites. Most ejecta out of these impacts are falling back to the lunar surface to build a layer of dust with time called regolith. Since that we have seen the nice footprints of astronauts in the lunar dust as proof: The Moon`s gravity
Metallic asteroids: threat or benefit?
«Our results suggest a higher number of metallic objects in the Solar System than previously suspected» said Alan Harris from the DLR Institute of Planetary Research in Berlin. Thanks to the new infrared method will be possible to identify many other metal-rich asteroids. What surprised the scientists was that metallic asteroids emit less
NEOShield’s target object comes close to Earth
Figure 1: Plot of the orbits of all presently known Potentially Hazardous Asteroids (PHAs), i.e. over 1400 as of early 2013. PHAs are asteroids with a size of at least 140 m and with orbits passing the Earth orbit within 7.5 million kilometres. The Earth orbit