Definitions for "Impact crater"
A crater formed on the surface of a terrestrial planet or a satellite by the impact of a meteoroid or planetesimal.
A crater formed by the collision of a meteoroid and the surface of a planet. The floor of an impact crater is always lower than the level of the terrain in which the crater is excavated. Impact craters can have any size, from micrometers to hundreds of kilometers in diameter.
A pit or depression on a planet's surface that forms when a meteorite strikes the planet.
Keywords:  widmanst, tten, pattern
Widmanstätten Pattern