00:10
00:09
00:08
00:07
00:06
00:05
00:04
00:03
00:02
00:01
| a celestial body with a mass of gas that is hot enough to produce and sustain nuclear fusion, thus producing luminosity |
| one billion years |
| anomalistic year | |
| —n | |
| the interval between two successive passages of the earth through perihelion; 365.25964 mean solar days | |