I need the answer of this question please 1 light year is equal..

I need the answer of this question please  1 light year is equal..

I need the answer of this question please  1 light year is equal..

I need the answer of this question please 1 light year is equal to _______ .

This formula predicts the distance from the Sun to each planet in the solar system.

The acronym AU stands for _______.

All of the following describe the event horizon and black holes except:

Constellations shift gradually to the ______ throughout the year as Earth orbits the Sun

The distance from the Earth to the Sun is ____ AU.

As of 2013, scientists have discovered _____ potentially habitable planets outside our solar system.

Protoplanets were ________ current planets.

Which of the following is the best current theory explaining the origins of our solar system?

Which of the following is the largest system?

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