Stars
Completion requirements
Browse the glossary using this index
Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL
N
NebulaA giant cloud of gas and dust where new stars are born. | |
Neutron StarAn extremely dense stellar remnant produced after some supernovae. | |
Nuclear FusionThe process in which hydrogen nuclei combine to form helium, releasing energy. | |