Galaxy and Dense Gas Passes

Comparing a yellow star, a blue star, and a red star, we could determine retributory from color that the hottest star was the 10. One. BLUE Rotation curves of spiral galaxies show that stars orbital speeds dont drop off with distance from the galactic center as expected, and and then imply the existence of . The main sequence includes the adjacent kinds of stars B) Hot, blue, large, massive ones and cool, red, small, low-mass ones 12. Which of the following was non an era In the history of the universe?The phases of the moon ar caused by D) The alignment of the Earth/moon/ cheerfulness system qualification a different portion of the Spectra help us determine the root word of astronomical objects because A) Each element, compound, or ion has a different set of spiritual lines. 15. Dark energy is the most important factor in the of the universe. A) Accelerating 16. public scenario for the fate The outer planets are more massive than the inner planets because C) twain of the a bove 17. The three basic types of galaxies are B) Spiral, elliptical, and irregular. 8. A planet orbiting a star feels a force due to the stars gravity that C) Increases with the stars mass and decreases with the solid of the distance. 19. Massive main sequence stars A) Have hot cores, use their atomic number 1 rapidly, and go supernova after a short life. 0. Hubbubs law gives us an indirect way to measure a galaxys D) Distance. 21. We can determine an objects temperature from its thermal (or melanisebody) spectrum by finding the wavelength at which it emits the most electromagnetic radiation.Galileo findings from his telescopic observations were revolutionary because he showed that the heavens were not perfect. B) FALSE 28. If the sun had begun fusion later, so it did not clear the solar nebula of its remaining gas so soon, Uranus and Neptune might collect become as large as Jupiter and Saturn are now. A) TRUE 29. If the sun somehow instantaneously became a 1 solar mass black hole, the Earth According to Hubbubs law, the reediest of a distant galaxy is directly related to to its temperature. B) False