Physicists uncover new solution for cosmic collisions

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http://www.theanalystmagazine.com/pr/6782628.htm

It turns out that our math teachers were right: being able to solve
problems without a calculator does come in handy in the "real" world.
Two theoretical physicists at Rensselaer Polytechnic Institute have
used what they call "pen-and-paper math" to describe the motion of
interstellar shock waves -- violent events associated with the birth of
stars and planets.

 

[Paul Hovnanian P.E.]

http://www.theanalystmagazine.com/pr/6782628.htm

It turns out that our math teachers were right: being able to solve
problems without a calculator does come in handy in the "real" world.
Two theoretical physicists at Rensselaer Polytechnic Institute have
used what they call "pen-and-paper math" to describe the motion of
interstellar shock waves -- violent events associated with the birth of
stars and planets.

Hmm. I didn't see a link to the actual math in that article. I mean, if
its that simple, lets see their work.