Craters :)
rocks and comets are attracted by moons gravity, so they crash
comets
"Periodic" comets reappear at predictable intervals, such as Haley's Comet. Some comets are never seen again. A few crash into the Sun and are destroyed; a few crash into other planets, such as the Shoemaker-Levy comet that hit Jupiter. Many comets have such long periods, in terms of thousands of years, that no records exist that anyone ever saw them before.
Halley's comet - which returns to our solar system approximately every 75 years - is one example, named after it's discoverer Edmund Halley. Another notable example is Shoemaker-Levy 9. It was observed orbiting the planet Jupiter, but the orbit was decaying - leading to the prediction that it was to crash into Jupiter's surface.
The current belief of virtually all astronomers is that comets were "specks" of leftover detritus from the formation of our solar system. Being the lightest of those "specks", they orbit the sun at the farthest distance - the Oort cloud, estimated to be about a light year from our sun. Note, though, that in this usage, "speck" means a ball of dirt laced with ices that's about 3 to 10 kilometers wide.
rocks and comets are attracted by moons gravity, so they crash
comets crash into all planets!Planets don't have comets. Planets have moons. Comets orbit the sun
comets
rain and it also comes from comets that crash on the earth that are frosen water
Shoemaker-Levy9 crashed in to Jupiter in 1994.
Your insurances pays it because you caused the crash.
Cassidy Casablancas (Beaver) caused the bus crash.
chuck norris
people overspeculating
snoz
snoz
The current US Subprime economic crisis caused the stock market crash in 2008 Due to lack of liquidy people started selling off their stocks to make cash. This caused a massive selling of stocks which in turn made the market crash