Neptune
Neptune‘s atmosphere is made up of hydrogen, helium and methane. The methane in Neptune’s upper atmosphere absorbs the red light from the sun but reflects the blue light from the sun back into space. This is why Neptune appears to be blue. The Romans named the five planets closest to the sun after their most important gods. Later, when telscopes were used, other planets were discovered. Astronomers decided to continue naming the Planets after Roman Gods. Neptune was named after the Roman god of the Sea. Read more
