Why did Galileo decide to flame Fr. Grassi over the latter’s theory of comets, making sure to lose the Jesuits’ support?

Grassi had promulgated an argument based on telescopic observations, namely that comets were not much enlarged by the instrument and therefore had to be correspondingly further away, an argument he believed not everyone had understood and accepted.

What did Galileo do to make the Catholic Church mad at him?

Today virtually every child grows up learning that the earth orbits the sun. But four centuries ago, the idea of a heliocentric solar system was so controversial that the Catholic Church classified it as a heresy, and warned the Italian astronomer Galileo Galilei to abandon it.

How did Galileo’s findings go against the Catholic Church?

Galileo’s discoveries were met with opposition within the Catholic Church, and in 1616 the Inquisition declared heliocentrism to be “formally heretical.” Galileo went on to propose a theory of tides in 1616, and of comets in 1619; he argued that the tides were evidence for the motion of the Earth.

What was Copernicus’s reaction to heliocentric theory?

In conclusion, the major reasons for not accepting Copernicus’ heliocentric model of the cosmos were that 1) it did not fit observational evidence as well as the Aristotelian/Ptolemaic geocentric model of the cosmos, and 2) the geocentric model was supported by Aristotelian physics (and the heliocentric system had no …

Which conclusion of Galileo’s did the Church not agree with?

Galileo’s conclusion that it was the Sun at the centre of the universe was not accepted by the Catholic Church, the most powerful institution in Italy – it steadfastly supported the traditional geocentric views of Aristotle and Ptolemy.

How did the Catholic Church respond to Galileo and his ideas quizlet?

How did the Roman Catholic Church respond to Galileo Galilei Scientific achievement? The church charged him with heresy (anti-church teachings) and he was put on house arrest. The church forced Galileo to take back his statements regardless of the spread of his ideas, but he still continued his work in secret.

What is Galileo’s findings?

Galileo’s discoveries about the Moon, Jupiter’s moons, Venus, and sunspots supported the idea that the Sun – not the Earth – was the center of the Universe, as was commonly believed at the time. Galileo’s work laid the foundation for today’s modern space probes and telescopes.

What can Galileo’s discoveries with his telescope and his conviction by the Inquisition tell us about the scientific revolution?

The 1632 conviction of Galileo by the Roman Inquisition, an ecclesiastical (church) court charged with maintaining the status quo, exemplifies how the Scientific Revolution constituted a war of ideas between scientists, inventors and philosophers against traditional religious and political authorities.

What effects did Galileo’s discoveries have after his death?

What effects did Galileo’s discoveries have after his death? Now able to observe the rotation of planets and confirm Copernican views of the solar system. What contributions did Newton make to scientific knowledge during the Renaissance?

What is Galileo’s proportional compass?

Galileo Galilei1606/1606

The Galilean compass—not to be confused with drawing compasses—is a sophisticated and versatile calculating instrument for performing a wide variety of geometrical and arithmetical operations, making use of the proportionality between the corresponding sides of two similar triangles.

How did Galileo’s discoveries help support the heliocentric theory?

Galileo discovered evidence to support Copernicus’ heliocentric theory when he observed four moons in orbit around Jupiter. Beginning on January 7, 1610, he mapped nightly the position of the 4 “Medicean stars” (later renamed the Galilean moons).

Why was Galileo’s telescope so important?

With this telescope, he was able to look at the moon, discover the four satellites of Jupiter, observe a supernova, verify the phases of Venus, and discover sunspots. His discoveries proved the Copernican system which states that the earth and other planets revolve around the sun.

What was Galileo’s telescope?

Galileo’s Telescopes

The basic tool that Galileo used was a crude refracting telescope. His initial version only magnified 8x but was soon refined to the 20x magnification he used for his observations for Sidereus nuncius. It had a convex objective lens and a concave eyepiece in a long tube.

How did Galileo’s telescope changed the world?

While the scientific doctrine of the day held that space was perfect, unchanging environments created by God, Galileo’s telescope helped change that view. His studies and drawings showed the Moon had a rough, uneven surface that was pockmarked in some places, and was actually an imperfect sphere.

Why did Catholic Church leaders feel threatened by Galileo’s support of the heliocentric theory?

Explain why the Catholic Church felt threatened by Galileo’s support for the heliocentric theory. Church leaders felt threatened because the idea that Earth was the center of the universe was part of the belief system approved by the Church. They thought people would start to doubt other Church teachings. `

Why did the theories of Copernicus and Galileo threaten the views of the church?

Both scientists held the same theory that the Earth revolved around the sun, a theory now known to be true. However, the Church disapproved of this theory because the Holy Scriptures state that the Earth is at the center, not the Sun.

How did the theories of Copernicus and Galileo change the way people understood the universe?

How did the theories of Copernicus and Galileo change the way people understood the universe? He proposed the idea of a heliocentric universe and Galileo proved it by observing how the planets rotated around the sun through a telescope.

Why was the heliocentric model rejected?

The heliocentric model was generally rejected by the ancient philosophers for three main reasons: If the Earth is rotating about its axis, and orbiting around the Sun, then the Earth must be in motion. However, we cannot “feel” this motion. Nor does this motion give rise to any obvious observational consequences.

Who proved the heliocentric theory?


Galileo knew about and had accepted Copernicus’s heliocentric (Sun-centered) theory. It was Galileo’s observations of Venus that proved the theory. Using his telescope, Galileo found that Venus went through phases, just like our Moon.

Who rejected heliocentric theory?

Copernicus was actually respected as a canon and regarded as a renowned astronomer. Contrary to popular belief, the Church accepted Copernicus’ heliocentric theory before a wave of Protestant opposition led the Church to ban Copernican views in the 17th century.

How does the heliocentric model explain the retrograde motion of Mars?

How the heliocentric model explain the retrograde motion of Mars? The heliocentric model explains retrograde motion because Mars only appears to move backward as Earth passes it in its orbit around the Sun.

What causes retrograde motions of the planets according to the heliocentric theory?

In the 1500s, Copernicus explained retrograde motion with a far more simple, heliocentric theory that was largely correct. Retrograde motion was simply a perspective effect caused when Earth passes a slower moving outer planet that makes the planet appear to be moving backwards relative to the background stars.

What causes retrograde motions of the planets according to the heliocentric theory quizlet?

In the heliocentric model, retrograde motion occurs when: Earth catches and passes another planet in its orbit.

How does each model explain the retrograde motion of the planets?

How did Ptolemy’s model explain the retrograde motions of the planets? Planets orbit the Sun at different speeds. When an inner, faster-moving planet “passes” a slower outer one, the slower planet appears to move backwards.

What causes retrograde motion?

Retrograde motion is an optical illusion caused by differences in the planets’ orbital speed. Let’s take Mars as an example. This superior planet moves slower in its orbit than the Earth. When we pass Mars, it seems to be moving “backward” because we’re moving faster than it is.

Who explained retrograde motion?

The most important solution to this problem was proposed by Claudius Ptolemy in the 3rd century AD. He argued that planets move on two sets of circles, a deferent and an epicycle. This explained retrograde motion while keeping the planets in their circular orbits around the Earth.

Why is retrograde motion important?

The solar system was formed from a disk of material which was spinning. The Sun and planets formed from that disk and spin in the same direction. If a body is retrograde it must have had an encounter with another objects otherwise it would violate the law of conservation of momentum.

How does the retrograde affect us?

According to Daisy, Mercury being in retrograde could cause huge relationship challenges, such as cheating, betrayal or loss of intimacy. She says: “As this planet appears to retreat, it may feel like it’s all going wrong in your love life, as you bring up issues and arguments from the past.

Why do we observe retrograde motion quizlet?

The planets orbit the Sun at different speeds, retrograde motion is natural and it occurs when the Earth appears to overtake or pass another planet in its orbit. More distant planets move more slowly across the sky than planets that are closer.