Bad Calculation: The Case of the Shrinking Comet and the Age of Solar System

Ten years after launching, the European Space Agency Rosetta spacecraft caught up to its target: Comet 67P.   In 2014, Rosetta, now 250 million miles from Earth, traveled along with the comet while it made its way around the Sun measuring its increased activity including classic comet tail formation as it approached the sun.  At one […]

More Planets Than Stars! Exoplanets and Our Little Blue Ball

Our solar system comes with planets of all sorts of sizes and compositions.   Not long ago, it was possible to debate if there were any other planets in the Universe other than those of our solar system.   Now, there doesn’t seem to be any question that other planets, called exoplanets, do exist. The […]

NH Notes: More Planets Than Stars Update

Our solar system comes with planets of all sorts of sizes and compositions.   Not long ago, it was possible to debate if there were any other planets in the Universe other than those of our solar system.   Now, there doesn’t seem to be any question that other planets, called exoplanets, do exist. The […]