英語(yǔ)翻譯
stars,galaxies and the universe constellations:patterns of stars in the sky.wisible light:light that we can see electromagnetic radiation:energy that can travel as a wave "drinking gourd" = the star pettern = big dipper spectrum:light spreaded out to ,make a range of different colors with different wavelengths.electromagnetic spectrum inchudes :the dectromagnetic specttrum inducles radio waves ,infrared radiation ,visble light,ultraviolet radiation ,x-rays,and gamma rays.observatory:is a place that has many telescope satellites spectrographs:it breavks the light from an object into colors temperatures:different temperatures preduce different lines of spectrum.degrees celsius