What do astronomers use to calculate the age of the universe? Select three options. Dark energy the age of rocks on Earth the age of the oldest stars patterns of background radiation how fast distant galaxies are moving away from us.

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

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