JUPITER

In 1994, a series of comet impacts made astronomy history.

This site has a great collection of photos.
http://www2.jpl.nasa.gov/sl9/

These articles look back from a perspective of 20 years after the event:
http://www.skyandtelescope.com/astronomy-news/comet-shoemaker-levy-9-20-years-later-07162014/

http://www.slate.com/blogs/bad_astronomy/2014/07/16/shoemaker_levy_9_20_years_later.html

Check out these videos:

https://youtu.be/7zNuT4dbdjU

 

http://www.history.com/shows/the-universe/videos/shoemaker-levy-impact#