For centuries, astronomers argued about the position of Earth in the solar system. What has MOST likely helped them come up with more accurate conclusions?

Astronomers and biologists study different areas of science. Many astronomers observe far distant objects in the sky. Many biologists study extremely small objects. What do these astronomers and biologists have MOST in common?

What advantage is gained by using radio telescopes as opposed to optical telescopes?

Since 1990, the Hubble Space Telescope has been orbiting Earth and sending back images of space for astronomers to view and interpret. What benefit is there to a telescope that orbits Earth?

This instruments is used by astronomers to collect incoming microwaves, what is the instrument used?

The Hubble Space Telescope is a telescope that NASA launched into space in 1990. Scientists MOST likely prefer to use the Hubble Space Telescope instead of a land-based telescope because it provides better accuracy.

Some astronauts may spend serval months in space orbiting Earth. Where do these astronauts MOST likely stay while in space?

What information about stars can be learned by using a spectroscope

In 1976, the Viking 1 Lander was sent to Mars to analyze atmospheric gases and soil samples. The Viking 1 Lander was MOST likely a _________.

Which of these is an unpiloted spacecraft designed to gather information while orbiting planets other that Earth?