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.
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
The observation that led Galileo to conclude that the sun rotated was when he looked through his telescope and noticed that their were sunspots on the sun. He later looked through the telescope once again and couldn't see the sunspots.
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.