Chapter 15 Stars and Galaxies

the brightness that a star would have at a distance of 32.6 light-years from Earth

• galaxy

• nebula

• supernova

• absolute magnitude

the brightness of a star as seen from Earth

• apparent magnitude

• parallax

• H-R Diagram

• big bang theory

the distance that light travels in one year; about 9.46 trillion kilometers

• supernova

• galaxy

• light-year

• spectrum

an apparent shift in the position of an object when viewed from different locations

• supernova

• H-R Diagram

• big bang theory

• parallax

the band of colors produced when white light passes through a prism

• spectrum

• absolute magnitude

• apparent magnitude

• galaxy

Tags

NGSS.HS-ESS1-2

Hertzsprung-Russell diagram, a graph that shows the relationship between a star’s surface temperature and absolute magnitude

• spectrum

• galaxy

• H-R Diagram

• nebula

the location on the H-R diagram where most stars lie; it has a diagonal pattern from the lower right (low temperature and luminosity) to the upper left (high temperature and luminosity)

• main sequence

• nebula

• apparent magnitude

• parallax

a gigantic explosion in which a massive star collapses and throws its outer layers into space

• galaxy

• nebula

• big bang theory

• supernova

a collection of stars, dust, and gas bound together by gravity

• H-R Diagram

• galaxy

• absolute magnitude

• spectrum

a large cloud of gas and dust in interstellar space; a region in space where stars are born

• nebula

• big bang theory

• parallax

• apparent magnitude