Galileo discovered that between the moons night and day sides the top was sometimes irregular and sometimes the bottom was smooth. He realized the irregularities were because the mountains on the moon.
Galileo was one of the first people to use a telescope to observe the heavens. He discovered craters on the moon, sunspots on the Sun, the phases of Venus, and four moons orbiting Jupiter. His observations strongly suggested that the Earth orbits the Sun, not vice versa
The moon has mountains, valleys, and craters - terrain in many ways reminiscent of that on Earth.
Galileo saw craters, highlands, and maria on the moon.
Pretty sure Galileo saw on the moon craters, maria, and highlands.
He could see the craters on the moon.
Maria, craters, and highlands
A telescope!
He saw maria, craters, and highlands
There have been no scientifically documented observations of extraterrestrial beings on the moon, although, many people believe that there may be a "moon base" on the dark side of the moon.
Earth's moon would have been the first moon discovered. Galileo observations identified four of Jupiter's moons - Io, Europa, Ganymede, Callisto - in 1610.
thermometer, telescope and the inclined plane
Galileo Galilei was supposedly the first, but some say that Englishman Thomas Harriot drew maps of Earth's moon a few months before Galileo discovered it.
The most important finding from the Apollo 11 mission was that it was possible to land men on the moon and return them safely home. The observations, pictures, and samples they took beyond that were just icing on the cake.
He made many experiments and observations in the field of physics in general.
Galileo's observations seemed to indicate that the heavenly bodies were composed of material substance just like Earth. Instead of pure orbs of light.
Observations from Earth-based telescopes are obscured by the atmosphere.
The telescope
Galileo's first astronomical observations revealed several anomalies. He observed that Jupiter had four moons orbiting around it, which challenged the prevailing belief that everything in space revolved around the Earth. He also observed that Venus went through phases similar to the Moon, suggesting that it orbited around the Sun and not the Earth. These observations provided evidence to support the heliocentric model proposed by Copernicus.
That the earth revolves around the sun and the moon revolves around earth
There have been no scientifically documented observations of extraterrestrial beings on the moon, although, many people believe that there may be a "moon base" on the dark side of the moon.
ryan shuck
Which one are you referring to?
the funky worm
Found planets and satellites.
Figure it out for yourself!