A collision between a comet and the earth would be a calamitous event based on the best available computer simulations, the impact of an object a kilometer or more in size would probably trigger . A meteoroid is a small rocky or metallic body travelling through space meteoroids are significantly smaller than asteroids, and range in size from small grains to 1 meter-wide objects most are fragments from comets or asteroids, while others are collision impact debris ejected from bodies such as . Nasa's swift and hubble probe asteroid collision debris date: april 29, 2011 source: nasa/goddard space flight center summary: late last year, astronomers noticed an asteroid named scheila had . Nasa's swift and hubble probe asteroid collision debris the first identified asteroid collision astronomers have known for decades that comets contain icy . Nasa knows of no asteroid or comet currently on a collision course with earth, so the probability of a major collision is quite small in fact, as best as we can tell, no large object is likely to strike the earth any time in the next several hundred years.
On friday, a meteor streaked over central russia hours before an asteroid was due to make a close pass of earth but just how grave is the threat we face from cosmic debris. Weak impact: the perseid meteor shower tiny comet debris to produce a beautiful sky show it's about 6 miles wide and a collision would be catastrophic . (physorgcom) -- infrared images of the aftermath of an impact on jupiter in 2009 have been combined with other observations to conclude that an asteroid, not a comet, slammed into the planet.
The chance of a collision is not that great, but because the trail of debris left by the comet's passage is rather large, the earth does pass through that as the debris is swept up by the earth and passes through our atmosphere, we have all sorts of bits of ice and rock burning up - that's what makes a meteor shower. Asteroid collisions are energetic, with an average impact speed of more than 11,000 miles per hour, or five times faster than a rifle bullet the comet-like object imaged by hubble, called p/2010 a2, was first discovered by the lincoln near-earth asteroid research, or linear, program sky survey on jan 6. A major impact event releases the energy of several million nuclear weapons detonating simultaneously, when an asteroid of only a few kilometers in diameter collides with a larger body such as the earth (image: artist's impression).
Just for clarification, it sounds like you're asking, in addition to asteroid tracking, about a possible astronomical explanation to crucifixion darknessthat would require a collision in transit between the earth and the sun that would make a debris cloud large enough for 3 hours of shade. Suspected asteroid collision leaves odd x-pattern of trailing debris this is a nasa hubble space telescope picture a comet-like object called p/2010 a2, which was first discovered by the . Data from near indicates that eros, a twenty-one-mile-long asteroid, is an irregular-shaped solid body, showing many impact features and n moons or debris surrounding the asteroid eros, apparently a very old asteroid, passes close to, but never crosses the earth’s orbit were once members of the main asteroid belt but was ejected by jupiter.
This leaves open the possibility that the complex debris tail is the result of an impact between two bodies rather than ices from a parent body simply turning into vapor asteroid collisions are energetic, with an average impact speed over 11,000 miles per hour (5 km/s, or five times faster than a rifle bullet). No impact crater was located and thus the most probable cause of the explosion was a collision with a comet, which does not have a solid rock core (dubeck, moshier and boss 2004 44) one of the by-products of a large meteor collision with the earth is the formation of line diamond crystals due to the explosion. The amount of damage an asteroid or comet impact could do is linked not just to the size of the object, but also to the geology of the area where it strikes “for years, paleontologists hypothesized that the size of a mass extinction might be correlated with the size of the bolide itself,” dr rowan lockwood, a william & mary paleontologist .
Nasa's swift and hubble probe asteroid collision debris particles excavated by the impact were pushed away from the asteroid by sunlight for decades that comets contain icy material that . A curious, comet-like object recently found in pictures from a ground-based telescope might actually be fallout from a high-speed asteroid collision, planetary scientists report if these . Ng strange comet may be asteroid collision debris comet-like object recently found in all known asteroids display telltale scars in the forms of impact . Nasa's swift and hubble probe asteroid collision debris excavated by the impact were pushed away from the asteroid by sunlight as the one ejected from comet 9p/tempel 1 during nasa's .