click below
click below
Normal Size Small Size show me how
stars
| Term | Definition |
|---|---|
| star | a fixed luminous point in the night sky that is a large, remote incandescent body like the sun. |
| apparent | clearly visible or understood; obvious. |
| luminosity | luminous quality. |
| absolute magnitude | the magnitude (brightness) of a celestial object as it would be seen at a standard distance of 10 parsecs. |
| temperature | A temperature is a numerical measure of hot and cold. Its measurement is by detection of heat radiation, particle velocity, kinetic energy, or most commonly, by the bulk behavior of a thermometric material. |
| main-sequence stars | is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness |
| astronomical-unit | a unit of measurement equal to 149.6 million kilometers, the mean distance from the center of the earth to the center of the sun |