Stars and Galaxies

clearly visible or understood; obvious.

• astronomical unit (AU):

• apparent:

• luminosity

• apparent magnitude:

• spectroscope:

a measure of how bright an object appears from Earth

• apparent:

• luminosity

• apparent magnitude:

• spectroscope:

Tags

NGSS.HS-PS4-3

the average distance between Earth and the Sun

• astronomical unit (AU):

• apparent:

• spectroscope:

• light-year:

Tags

NGSS.MS-ESS1-3

the distance light travels in 1 year

• astronomical unit (AU):

• apparent magnitude:

• spectroscope:

• light-year:

the true brightness of an object

• apparent magnitude:

• light-year:

• luminosity

• spectroscope:

Tags

NGSS.HS-PS4-3

an instrument that spreads light into different wavelengths

• light-year:

• spectroscope:

• apparent magnitude:

• luminosity

the orange-red layer of a star above the photosphere

• photosphere:

• radiative zone:

• convection zone:

• chromosphere:

a layer of a star where hot gas moves up toward the surface and cooler gas moves deeper into the interior

• convection zone:

• photosphere:

• chromosphere:

the wide, outermost layer of a star's atmosphere

• nuclear fusion:

• star:

• corona:

• Hertzsprung-Russell diagram:

a graph that plots luminosity v. temperature of stars

• star:

• nuclear fusion:

• Hertzsprung-Russell diagram:

• convection zone: