Codon Codon is a combination of three successive nucleotides in a DNA or RNA strand. All the nucleic acids, DNA and RNA, have nucleotides sequenced as a set of codons. Each nucleotide consists of a nitrogenous base, one of A, C, T/U, or G.
Phases of the moon are simply how much sun is hitting the surface of the moon, with the moon being between the earth and the sun. Lunar eclipses occur when a conjunction between the earth and the sun... with the earth casting a shadow on the full moon.
A Total Lunar Eclipse occurs at night with the Moon entering Earth's shadow, firstly into the penumbra (Earth's outer shadow) where only some of the light is blocked from reaching the Moon - turning the Moon from its familiar white to a subtle shade of white-grey.