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Busse - Esps
1B Astronomy Vocab
| Term | Definition |
|---|---|
| Solar System | Objects, such as stars and planets that revolve around the sun. |
| Star | A hot gas ball, mostly made of hydrogen and helium that undergoes nuclear fusion. |
| Stellar Spectra | Continuous black body spectrum based on the absorption line surface temperature sequence. |
| Planet | An object that doesn't produce light of its own, in space orbitting a star. |
| Solar Nebula | A cloud of gas and dust that rotates and was formed by the solar system. |
| Gas Giant | Large planets that consist of deep, dense gases. |
| Nuclear Fusion | When multiple nuclei form together to make a nucleus. |
| Main Sequence | Where most stars lie on the HR Diagram. |
| HR Diagram | A graph that relates to brightness and temperature of stars. |
| Nebula | Cloud of dust and gas in space. |
| Red Giant | An expanding star late in its life cycle, that cools down once it runs out of hydrogen fuel. |
| White Dwarf | Leftover center of an old star that is now small, hot and dim. |
| Nova | A star that becomes a thousand times brighter and then fades. |
| Neutron Star | A star that has collapsed under its own gravity to where the electrons and protons have combined to form neutrons. |
| Pulsar | A neutron star, spinning rapidly which creates radio waves. |
| Blackhole | A star, where light can't escape it due to the gravitational pull on its surface. |
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