Why is it called the Moon? A blue moon is an extra full moon that shows up in a subdivision of the year: either the third or a second full moon in a month of the common calendar....

What are the 5 common types of Spectroscopy? 1) Infrared (IR) and Near Infrared (NIR) 2) Nuclear magnetic resonance 3) X-ray 4) Spark or arc (emission) spectroscopy 5) Visible/Ultraviolet (UV)

5 Cool Facts about Orion Nebula Orion Nebula is also known as Messier 42, M42, or NGC 1976. It is a mellow nebula located in the Milky Way.