CriticalVocabulary

Vocabulary

-Hertzsprung-Russell- a scatter graph of stars showing their relationship between the stars absolute magnitudes or luminosities verses their spectral types or classifications or effected temperatures; not pictures or maps of the location of the stars

-Protostar- early stage in the evolution of a star -Neutron Star- a star that has collasped under its own gravity to a diameter of about 10-15 km -Fusion- the act or process of fusing; combining -Main Sequence- a narrow band in the Hertzspring Russell Diagram in which 90% of all observed stars are plotted -Nebula- a cloud of interstellar gas and dust

-Galaxy- a large system of stars held to gether by mutral gravitation and isolated from similar system by vast regions of space

-Black Hole- a theoretical massive object formed at the beginning of the universe or by the gravitational collaspe of a star exploding as a super nova who's gravitational field is so intense that no electomagnetic radiation can escape

- Luminosity- a measure of radiant power amitted by a star

- Scientific Theory- A well-stated concept that explains a wide range of observations

- Big Bang Theory- The initial eplosion that according to this theory resulted in the formation in expansion of the universe