2009年2月24日 · Galileo sparked the birth of modern astronomy with his observations of the Moon, phases of Venus, moons around Jupiter, sunspots, and the news that seemingly countless individual stars make up the Milky Way Galaxy.

1992年12月16日 · With only a third of the brightness of Earth, the Moon has been digitally enhanced to improve visibility. Don’t accuse the Galileo spacecraft of heresy for this 1992 shot …

1992年12月16日 · Eight days after its final encounter with the Earth, the Galileo spacecraft looked back and captured this remarkable view of the Earth and Moon. The image was taken from a distance of about 6.2 million km (3.9 million miles).

2024年11月5日 · Galileo was deliberately destroyed to protect one of its own discoveries—a possible ocean beneath the icy crust of the moon Europa. On the day of impact, it took Galileo’s radio signals about 52 minutes to travel between the spacecraft and Earth. Galileo was the first spacecraft to orbit an outer planet.

They are planetary-mass moons and among the largest objects in the Solar System. All four, along with Titan, Triton, and Earth's Moon, are larger than any of the Solar System's dwarf planets. The largest, Ganymede, is the largest moon in the Solar System and surpasses the planet Mercury in size (though not mass).

He subsequently used his newly invented telescope to discover four of the moons circling Jupiter, to study Saturn, to observe the phases of Venus, and to study sunspots on the Sun. Galileo's observations strengthened his belief in Copernicus' theory that Earth and all other planets revolve around the Sun.

When Galileo first turned his telescope to the moon, he had no idea that he was about to see something that would cast doubt upon centuries-old beliefs. At the time of Galileo, science was based upon the teachings of Aristotle. According to Aristotle, the …

2023年4月5日 · Galileo Galilei first begins observing the moon with his telescope on November 30, 1609. He discovers that the surface of the moon is not smooth, as previously thought, but full of mountains...

1998年6月4日 · During its flight, the Galileo spacecraft returned images of the Earth and Moon. Separate images of the Earth and Moon were combined to generate this view. The Galileo spacecraft took the images in 1992 on its way to explore the Jupiter system in 1995-97.

Galileo then became interested in optics and astronomy, and in 1609 he built his first telescope and began making observations. The following year he published his first results, where he described the highlands and "seas" of the Moon, four of Jupiter's largest moons, and many newly discovered stars.