- Galileo Galilei, 1564–1642, Italian physicist and astronomer.
- Aerospace. a U.S. space probe designed to take photographs and obtain other scientific information while orbiting the planet Jupiter.
- full name Galileo Galilei. 1564–1642, Italian mathematician, astronomer, and physicist. He discovered the isochronism of the pendulum and demonstrated that falling bodies of different weights descend at the same rate. He perfected the refracting telescope, which led to his discovery of Jupiter’s satellites, sunspots, and craters on the Earth’s moon. He was forced by the Inquisition to recant his support of the Copernican system
- a US spacecraft, launched 1989, that entered orbit around Jupiter in late 1995 to study the planet and its major satellites; burned up in the planet’s atmosphere in 2003
- Italian astronomer, mathematician, and physicist. He was the first to use a telescope to study the stars and planets, and he discovered various astronomical phenomena and physical principles.
An Italian scientist of the late sixteenth and early seventeenth centuries; his full name was Galileo Galilei. Galileo proved that objects with different masses fall at the same velocity. One of the first persons to use a telescope to examine objects in the sky, he saw the moons of Jupiter, the mountains on the moon, and sunspots.