GENERAL KNOWLEDGE

Detailed explanation-1: -Galileo’s discoveries about the Moon, Jupiter’s moons, Venus, and sunspots supported the idea that the Sun-not the Earth-was the center of the Universe, as was commonly believed at the time.

Detailed explanation-2: -heliocentrism, a cosmological model in which the Sun is assumed to lie at or near a central point (e.g., of the solar system or of the universe) while the Earth and other bodies revolve around it.

Detailed explanation-3: -What is at the center of the Solar System? The Sun is a yellow dwarf star found in the center of the solar system, and in an outer arm of our Galaxy, the Milky Way. Its mass constitutes 99, 8% of the mass of the solar system.

Detailed explanation-4: -In a book called On the Revolutions of the Heavenly Bodies (that was published as Copernicus lay on his deathbed), Copernicus proposed that the Sun, not the Earth, was the center of the Solar System. Such a model is called a heliocentric system.