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en.wikipedia.org/wiki/Impact_event

Due to Earth's escape velocity, the minimum impact velocity is 11 km/s with asteroid impacts averaging around 17 km/s on the Earth. The most probable impact angle is 45 degrees. Impact conditions such as asteroid size and speed, but also density and impact angle determine the kinetic energy released in an impact event.

www.purdue.edu/impactearth

Impact: Earth! written by Gareth Collins, H. Jay Melosh and Robert Marcus Developed by ITaP for Purdue University. View the text-only version. Purdue University, West ...

www.worldatlas.com/articles/biggest-asteroid-impacts-in-earth-s-history.html

Biggest Asteroid Impacts In Earth's History. Time and again, asteroid impacts on Earth have scarred the surface of the blue planet, leaving behind massive craters. An Artist's Representation Of An Asteroid Belt In Orbit Around A Star.

www.express.co.uk/news/science/821944/asteroid-impact-earth-nasa-apophis

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.

www.nationalgeographic.com/news/2013/2/130214-biggest-asteroid-impacts...

Earth's craters are enduring testaments to direct asteroid hits. And though millions—in some cases billions—of years of erosion have made it difficult to determine the exact size of the ...

en.wikipedia.org/wiki/List_of_impact_craters_on_Earth

This list of impact craters on Earth contains a selection of the 190 confirmed craters given in the Earth Impact Database. To keep the lists manageable, only the largest craters within a time period are included. The complete list is divided into separate articles by geographical region.

ucmp.berkeley.edu/education/dynamic/session5/sess5_asteroid.htm

An asteroid hits the Earth. What would be the ramifications of such an event? How would this impact each of the spheres? You will realize that there are some uncertainties that will depend on certain variables. What are those variables concerning the impact that might modify the effects of the impact?

cneos.jpl.nasa.gov/sentry

Impact Probability (cumulative) Sum of the impact probabilities from all detected potential impacts. V infinity (km/s) Velocity of the asteroid relative to the Earth, assuming a massless Earth. H (mag) Absolute Magnitude, a measure of intrinsic brightness.

www.livescience.com/45126-biggest-impact-crater-earth-countdown.html

Here on Earth, flying space debris triggered mass extinctions, but the same deadly asteroids might also have delivered the seeds of life soon after Earth was born. The effects of asteroid impacts ...