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52768 (1998 OR2)
Calc impact
Using the Impact Calculator, students can create a virtual impact on Earth by changing the size, speed and composition of an approaching asteroid or comet.
Give the NumWorks graphing calculator a try with this online simulator. Click on the calculator's keys to browse through the apps. You may also use your computer's keyboard.
Qalculate! is a multi-purpose desktop calculator for GNU/Linux (now ported to Mac). It is small and simple to use but with much power and versatility underneath. Features include customizable functions, units, arbitrary precision, plotting, and a user-friendly interface (KDE or GTK+).
The Drake equation is a mathematical equation used to estimate the number of detectable extraterrestrial civilizations in the Milky Way galaxy. It is used in the field of the Search for ExtraTerrestrial Intelligence (SETI). The equation was devised in 1961 by Frank Drake, Emeritus Professor of Astronomy and Astrophysics at the University of California, Santa Cruz.