a sphere, centered on Earth, whose radius equals the distance traveled by light

Question

a sphere, centered on Earth, whose radius equals the distance traveled by light since the Big Bang; the limit of the "visible" universe the study of the formation, organization, and evolution of the universe a mathematical equation used to estimate the number of extraterrestrial civilizations that may exist in our Galaxy a particle of the same mass but opposite in all other respects (e.g. charge) to a given particle event that cosmologists consider the beginning of the universe, in which all matter and radiation in the entire universe came into being a framework of ideas and assumptions used to explain some set of observations and make predictions about the real world theory antiparticle cosmology Drake equation Big Bang cosmic light horizon

Explanation / Answer

Please find the desired answers:

1-f

2-c

3-d

4-b

5-e

6-a

thank you

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