Relativistic Star Ship Calculator

[sideranautae]

Here is a nice calculator if you want to figure out time dilation and whatnot while traveling between stars in normal space using continuous acceleration.

http://mysite.verizon.net/res148h4j/javascript/script_starship.html

Also an asteroid crater calculator. http://mysite.verizon.net/res148h4j/javascript/script_crater.html