Impact calculator
When a meteorite or asteroid hit earth they create a huge wave of devastation.
A phenomenon like that one will create a huge change in the landscape and for you to have an idea about which size of celestial bodies may create certain alteration of the landscape you may consult a new website that will provide all the information for you to have an idea of the level of destruction of those celestial bodies.
The site is called Impact calculator and can be used in 4 different languages like English, Welsh, Dutch and Spanish.
In the site you set up the size and kind of celestial body that you want to hit the earth and the site will calculate all the rest like the crater size and other changes that the celestial body may do to the landscape.
Have fun with the site!