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 […]

The Case of the Shrinking Comet and the Age of the Universe

Ten years after launching, the European Space Agency Rosetta spacecraft finally caught up to its target, Comet 67P.   Rosetta, now 250 million miles from Earth, will travel along with the comet while it makes its way around the Sun measuring its activity as it goes through the process of forming a tail. Already Rosetta has detected and measured streams […]

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 […]