Question

multiple choice
1 pt
mark the correct answer.

1. which branch of astronomy involves using telescopes to observe celestial objects?

theoretical astronomy observational astronomy
astrobiology cosmology

Explanation:

To solve this, we analyze each option:

• Theoretical Astronomy focuses on mathematical models and theories, not direct observation with telescopes.
• Observational Astronomy is defined by using instruments like telescopes to observe celestial objects.
• Astrobiology studies the possibility of life in the universe, not primarily telescope - based observation of celestial objects.
• Cosmology deals with the origin and evolution of the universe, not direct observation of celestial objects with telescopes.

Answer:

B. Observational Astronomy