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In physics, a shock wave (also spelled shockwave), or shock, is a type of propagating disturbance that moves faster than the local speed of sound in the medium. Like an ordinary wave, a shock wave carries energy and can propagate through a medium, but is characterized by an abrupt, nearly discontinuous, change in pressure , temperature , and ...
Shock waves are common in astrophysical environments. [1]Because of the low ambient density, most astronomical shocks are collisionless.This means that the shocks are not formed by two-body Coulomb collisions, since the mean free path for these collisions is too large, often exceeding the size of the system.
A meteor air burst is a type of air burst in which a meteoroid explodes after entering a planetary body's atmosphere. This fate leads them to be called fireballs or bolides , with the brightest air bursts known as superbolides .
Desert glass – natural glass found in deserts formed from the silica in sand as a result of lightning strikes or meteor impacts. Differentiated – a meteorite that has undergone igneous differentiation. (See: achondrite) Differentiation – usually the process of a planetesimal forming an iron core and silicate mantle.
Shock metamorphism or impact metamorphism describes the effects of shock-wave related deformation and heating during impact events.. The formation of similar features during explosive volcanism is generally discounted due to the lack of metamorphic effects unequivocally associated with explosions and the difficulty in reaching sufficient pressures during such an event.
NASA has announced in a news release that a dying starâ s shockwave has been captured in the optical wavelength. ... Science & Tech. Shopping. Sports. Weather. 24/7 Help.
Elon Musk said Starlink satellite internet is inactive in India, his first comments since authorities seized two of the company's devices in recent weeks, one in an armed conflict zone and another ...
The Chelyabinsk meteor is also the only meteor confirmed to have resulted in injuries. No deaths were reported. The earlier-predicted and well-publicized close approach of a larger asteroid on the same day, the roughly 30 m (100 ft) 367943 Duende , occurred about 16 hours later; the very different orbits of the two objects showed they were ...