Term | Definition |
Solar System | The sun and all of the planets and other bodies that travel around it. |
Star | A ball of hot gas, primarily hydrogen and helium, that undergoes nuclear fusion. |
Stellar Spectra | Continuous black body spectrum and photo-sphere. |
Planet | An object that orbits a star, is large enough to have become rounded by its own gravity. and has cleared the area of its orbit. |
Solar Nebula | A large cloud of gas and dust such as the one that formed our solar system. |
Gas Giant | The name given to the first four outer planets: Jupiter, Saturn, Uranus, and Neptune. |
Nuclear Fusion | The process by which two or more small nuclei fuse to make a bigger nucleus. |
Main Sequence | The location on the H-R diagram where most stars lie. |
HR Diagram | A graph relating the temperature and brightness of a star. |
Nebula | A large cloud of gas and dust in space. |
Red Giant | A large, reddish star late in its life cycle. |
White Dwarf | A small, hot, dim star that is the leftover center of an old star. |
Nova | A star that suddenly becomes brighter. |
Neutron Star | A star that has collapsed under its own gravity. |
Pulsar | A rapidly spinning neutron star that produces radio waves. |
Blackhole | A region of space having a gravitational force so intense that no matter can escape |
Astronomy | The study of space, the universe and celestial bodies. |
Big Bang Theory | |
Doppler Shift | |
Red Shift | |
Blue Shift | |
Frequency | |
Wavelength | |
Absolute Brightness (magnitude) | |
Apparent Brightness (magnitude) | |
Cosmic Microwave Background (CMB) | |
Universe | |
Galaxy | |
Electromagnetic Spectrum | |
AU-Astronomical unit | |
Convective Zone | |
Photosphere | |
Chromosphere | |
Corona | |
Sunspot | |
Prominence | |
Solar Flare | |
Coronal mass ejection | |
Light year | |
Parallax | |
Constellations | |
Cosmology | |