@museumofscience: In the far reaches of our solar system lies a fascinating region where billions of comets orbit. Oort cloud is this week’s @museumofscience and @dictionarycom #ScienceWordOfTheWeek! Presented by Maynard Okereke from the @hiphopscienceshow! #vocabulary #dictionary #wordoftheday #wordnerd #sciencefacts #astronomy #oortcloud #janoort #solarsystem #comet #spacetok #sciencetok #universe #museumofscience #ScienceWordOfTheWeek