Perceiving Age: Student’s Interpretations of the History of Craters on Mars

Our perceptions of the age of a subject are frequently based on our common experience with similar subjects. Most people have some ability to guess the age of children with seemingly very little prior information.  We might call this ability to guess age our intuition but this “intuition” is the scientific method working automatically in our minds.  Our […]

NH Notes: Mars Takes Another Hit, Wishes it had an Atmosphere Like Earth

There is much interest in determining the likelihood of future asteroid and meteorite impacts on Earth.  It is very difficult to estimate the probabilities of such events but we can learn something by looking to one of our solar system neighbors – Mars.  Because the surface of Mars changes so slowly new impacts there can […]