An impact event is a collision between astronomical objects causing measurable effects. Impact events have physical consequences and have been found to regularly occur in planetary systems, though the most frequent involve asteroids, comets or meteoroids and have minimal effect. When large objects impact terrestrial planets such as the Earth, there can be significant physical and biospheric ...
IMPACT of asteroid that will approach Earth in 2029 ‘CANNOT be ruled out’ AN asteroid is set to whizz past Earth in 2029 and experts have warned that it may hit the planet in the future.
Confirmed impact craters listed by size and age. These features were caused by the collision of meteors (consisting of large fragments of asteroids) or comets (consisting of ice, dust particles and rocky fragments) with the Earth.  For eroded or buried craters, the stated diameter typically refers to the best available estimate of the original rim diameter, and may not ...
"We now believe there are between 500 and 1,000 near-Earth asteroids larger than one kilometer in diameter." 2000 -- Michael Paine, an Australian engineer, announces a new computer analysis of asteroid impacts indicating that asteroids may cause
Each time astronomers identify an asteroid that isn't on a collision course with Earth, the calculated odds of an impact go down a little bit. By the time the current survey is completed the estimated odds of dying in an asteroid impact will have decreased by a factor of 10, from 1 in 70,000 to 1 in 700,000.
Discovery Channel - Large Asteroid Impact Simulation (2008). Earth was born as a result of repeated asteroid collisions, the moon was created by a single giant impact event. Then, Earth's size ...
In fact, all of the heavy metals (iron on up) in the Earth's crust came from asteroid impacts after the Earth differentiated---the Earth's original supply from its formation is in the Earth's core. For some near-Earth asteroids it would take less fuel to travel to, land on, and return to Earth than would a roundtrip to the Moon's surface.
Thus, far from being free from impacts, the Australian landscape has been shaped many times over millions and billions of years by asteroids falling to Earth. As studies of Australian impact ...
One way in which asteroid impacts have literally shaped Earth is through the resulting craters from large objects crashing into the crust. For instance, the Vredefort Dome in South Africa is the largest verified impact crater on Earth, estimated to be 300 kilometers wide when it was originally created.
If you see this message, your browser is not compatible. The following table summarizes by object the potential future Earth impact events that the JPL Sentry System has detected based on currently available observations. Click on the object designation to go to a page with full details on that ...