EVERYDAY SCIENCE

Detailed explanation-1: -Peering through his newly-improved 20-power homemade telescope at the planet Jupiter on Jan. 7, 1610, Italian astronomer Galileo Galilei noticed three other points of light near the planet, at first believing them to be distant stars.

Detailed explanation-2: -On January 7, 1610, Italian astronomer Galileo Galilei discovered, using a homemade telescope, four moons orbiting the planet Jupiter. Looking at what he thought were a group of stars, he realized the objects appeared to move in a regular pattern.

Detailed explanation-3: -Ganymede: Discovered on January 7, 1610, by Italian scientist Galileo Galilei.

Detailed explanation-4: -The German astronomer Simon Marius may have observed the moons around the same time as Galileo, but Galileo is credited with the discovery. Galileo published his findings in March 1610 in a book titled “Sidereus Nuncius” or “The Starry Messenger.”

Detailed explanation-5: -On January 7, 1610, astronomer Galileo Galilei used a telescope to observe Jupiter and found peculiar fixated stars surrounding the planet.