Galileo looked at the sun and observed dark blemishes on its surface (which are now called sunspots). From the movement of these blemishes, he was able to determine that the sun has a rotation period of about one month.
Galileo did not discover the two moons of Mars. He made significant contributions to astronomy, including the discovery of Jupiter's four largest moons (the Galilean moons), the observation of sunspots, and the detailed study of mountains on the Moon. The two moons of Mars, Phobos and Deimos, were discovered later in 1877 by Asaph Hall.
The first person to use a telescope for astronomical observation was Galileo Galilei in the early 17th century. He made groundbreaking discoveries, such as the moons of Jupiter and the phases of Venus, using his telescope.
He showed that the geo-centric view of our solar system did not match observation, but that the helio-centric view did. More fundamentally, Galileo Galilei led the way to a view that observation should take precedence over philosophy when determining truth about our world.
"Experimenting is the best way to get scientific information. Experiments are valuable only when closely and accurately observed."
Galileo discovered the telescope, and phases of the moon
Galileo's observation was that all the planets revoled around the earth and he though earth was a middle planet
Galileo is famous for observing and proving his heliocentric model of the universe. After his observation the existing model of the universe was slowly phased out.
he believed in the truth of observation & reason
He noticed that they were in the shapes of animals.
Saturn has been known since ancient times. The first observation of Saturn using a telescope was made by Galileo in 1610.
It was based upon observation and experimentation.
The first person to use a telescope for astronomical observation was Galileo Galilei in the early 17th century. He made groundbreaking discoveries, such as the moons of Jupiter and the phases of Venus, using his telescope.
The observation of the moons orbiting the planet Jupiter made by Galileo. This proved that not everything revolved round Earth/Rome.
the two kinds of observation are: quatitative observation and: qualitative observation
the two kinds of observation are: quatitative observation and: qualitative observation
Galileo looked at the sun and observed dark blemishes on its surface (which are now called sunspots). From the movement of these blemishes, he was able to determine that the sun has a rotation period of about one month.
He showed that the geo-centric view of our solar system did not match observation, but that the helio-centric view did. More fundamentally, Galileo Galilei led the way to a view that observation should take precedence over philosophy when determining truth about our world.