“Transit” is when…Group of answer choicesa planet changes its average distance from its stara planet blocks some of the light of its starthe light of a star redshifts more than 2 nmbinary stars move into a new cluster of stars

If light from a distant star passes close to a massive body, the light beam willGroup of answer choicesaccelerate due to gravity.bend towards the star due to gravity.continue moving in a straight line.change color to a shorter wavelength.slow down.

Why does redshift occur?5 pointsThe wavelength of light increasesThe wavelength of light decreasesThe celestial objects are moving fasterThe celestial objects are moving slower

The movement of the planets and other celestial bodies in the Solar System is caused by A. waves of solar radiation moving away from the Sun. B. gravitational forces from the Sun. C. the repulsion of neighboring planets in the Solar System. D. the pull from the edges of the Solar System.

When a planet's orbit takes it closest to the Sun, it's calledGroup of answer choicesperihelionvernal equinoxcrossing the ecliptic.aphelionNone of these; a planet's distance from the Sun never changes.

Two planets are orbiting a star. Planet A is closer to the star than Planet B. Which description explains the expected motion of Planets A and B? Planet B orbits faster than Planet A. Planet B has a shorter orbital period than Planet A. Planet A orbits faster than Planet B. Planet A has an equal orbital period to Planet B.