Q4T4 Part 1

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Structures in the universe are grouped into large systems, each of which are made up of smaller systems. Which of the following is the largest system of which Earth is only a very small part?

A “shooting star” is

Astronomers measure distances using very large units called light years. Which distance between celestial objects would most likely be measured in light years?

Which of these locations in the solar system contains the most asteroids?

Scientists once believed that the structure of the universe had changed very little. Which statement best supports the theory that the universe is constantly changing?

What type of galaxy is the Milky Way?

Which gas present in the atmosphere of Mars is the primary gas found in the atmosphere of Earth?

Which of these objects is the largest?