Vidulini
Most of us had the opportunity to experience the personal experience of weaker or stronger earthquake. Every year, we fortunately only through the media, witnesses of serious consequences that earthquakes are all over the world. They are the result of the geological development of the planet and there will be until it has geological activity. Our scientist Andrija Mohorovicic hit the foundations of modern seismography and Richard Binzel of MIT opens new chapter seismography on geologically dead bodies - asteoridima.
Astronomers know the heavenly bodies called "Near Earth Object." This is a larger or smaller objects that are in your path once or several times very close to the ground and pose a potential threat to our ecosystem and society. Several military and civilian observatory diligently follows the known NEO search facilities and potential new threats. So far in the calculation of their orbits achieve very high precision, but one of the essential elements of what is happening with the NEO objects when passed too close to the Earth has remained virtually unknown. This is where Binzel and his team are using computer models failed to demonstrate something more than mere gravitational effect on Earth's NEO objects. "If they pass through such objects at a distance equal to one third of the distance Earth-Moon system and experienced the same sort of seismic shock - an earthquake," Binzel is .. As a result, in extreme cases can lead to disintegration of the NEO, and certainly the event of change, both within the facility and on its surface. They are very probable geological processes on the surface of these NEO objects delivery of new layers of regolith. This would also explain the discrepancy between perceived and measured ages of these celestial bodies. Namely solar radiation, "old" surface of celestial bodies, a "new" regolith deposits from the interior, due to this mechanism when they come to the surface, the facility consists of "young".
It should be noted that previously was considered such a possibility, but at much closer distances NEO passing near our planet. Now this is a serious theory, supported by measurements and computer models. Studies will continue, and especially because several well-known objects that periodically muddy grounds there beside us. Astronomers and geologists, we must now give new answers to how to tackle the threats of heaven that are not mere pieces of ice and rocks, but celestial geological potential of cluster bombs.
Marino Tumpić
