Multiple choice general knowledge science & technology

How have astronomers learned most of what they know about the stars, galaxies, and the universe?

  1. By sending robotic space probes out to explore the depths of space beyond our solar system.

  2. By analyzing light and other electromagnetic radiation from space that reaches the vicinity of Earth.

  3. Through controlled laboratory and in situ experiments.

  4. none
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Astronomers primarily study celestial objects by analyzing light and other electromagnetic radiation that reaches Earth and near-Earth space. While robotic probes have explored within our solar system, we have not sent probes beyond it, making electromagnetic observation our primary tool for studying the universe.

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