What drives us to send probes throughout the solar system and rovers and landers to Mars? It's not cheap, and it's not easy.

This simple formulation is generally agreed to be the “second most-famous equation in science (after E= mc 2),” and you can find it in nearly every astronomy textbook. The Drake Equation was cooked up ...

Did life on Venus die or hide? NASA's Venus Life Equation retools the Drake Equation to explore past oceans, microbial ...

Scientists have developed a new equation to investigate the possibility of past life on Venus, fueling our curiosity about ...