QuestionMay 18, 2025

What did early astronomers NOT know about the solar system? A) Jupiter has many moons. B) It has comets and asteroids. C) It has one star and many planets.

What did early astronomers NOT know about the solar system? A) Jupiter has many moons. B) It has comets and asteroids. C) It has one star and many planets.
What did early astronomers NOT know about the solar system?
A) Jupiter has many moons.
B) It has comets and asteroids.
C) It has one star and many planets.

Solution
4.6(196 votes)

Answer

A) Jupiter has many moons. Explanation 1. Identify historical knowledge gaps Early astronomers did not have telescopes or advanced technology to observe distant celestial bodies. 2. Analyze options A) Jupiter's moons were discovered by Galileo in 1610, so early astronomers before this time did not know about them. B) Comets and asteroids were known phenomena, though their nature was not fully understood. C) The concept of the solar system having one star (the Sun) and many planets was established by Copernicus in the 16th century.

Explanation

1. Identify historical knowledge gaps<br /> Early astronomers did not have telescopes or advanced technology to observe distant celestial bodies.<br /><br />2. Analyze options<br /> A) Jupiter's moons were discovered by Galileo in 1610, so early astronomers before this time did not know about them.<br /> B) Comets and asteroids were known phenomena, though their nature was not fully understood.<br /> C) The concept of the solar system having one star (the Sun) and many planets was established by Copernicus in the 16th century.
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