Match them ! 1. mounted on satellites 2. separates starlight into wavelengths 3. pick up faint-lighted stars 4. see binary stars infrared telescopes 5. see behind nebulae dust giant refractors giant reflectors spectrograph infrared telescopes radio telescopes

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted

Which of the following statements about the us federal boundaries is true

Which statement best explains the relationship between an area's geography and the temperature of its surface water? areas at low altitudes have the warmest water because they receive the most direct sunlight. areas at low altitudes have the warmest water because they have the least change in temperature throughout the year. areas at high latitudes have the warmest water because their days are the longest. areas at high latitudes have the warmest water because they have the longest seasons.