were sunspots observed by galileo?
98694
Yes. Actually in his final years he was completely blind because of this.
396173
The most obvious difference is that Galileo didn't have a theory on relativity.
374451
he prove that the earth is revolving around te sun not sun revolvong around the earth...so this went against the church in the middle ages.. so he was exucted.  he used telescope to see the planets and moons that revolve around the sun and then..  he prove theat the sun revolv aund the sun..
574370
A sampling of famous astronomers\nAstronomer Contribution \nHipparchus and Ptolemy Determined the positions of about 1,000 bright stars, tried to explain the puzzles of astronomy without refuting only believed geocentric model of universe and classified stars by magnitude. \nAristarchus of Samos First known person to propound the heliocentric model of universe. Attempted to calculate the sizes and distances of the Sun and Moon. \nNasir al-Din al-Tusi This Persian astronomer gave the first extant exposition of the whole system of plane and spherical trigonometry. Made very accurate tables of planetary movements and named many stars. Developed the Tusi-couple which resolves linear motion into the sum of two circular motions. He also calculated the value of 51' for the precession of the equinoxes and contributed to construction and usage of astrolabe. \nNicolaus Copernicus First exponent of heliocentrism in modern times. \nTycho Brahe Did develop many important astronomical instruments, and achieved accurate measurments of the heavens by improving scentific methodology and by designing instruments on a large scale. His measurements of the orbit of Mars were very important to the development of astronomy. \nJohannes Kepler Suggested the elliptical orbits of planets, and propounded his Laws of Planetary Motion. \nGalileo Galilei Was the first to use the telescope to observe the sky. Condemned to house arrest for his discoveries by Inquisitional edict, which was lifted 359 years later by Pope John Paul II. \nIsaac Newton Published Philosophiae Naturalis Principia Mathematica (1687), containing the "Newton's laws of motion", which are fundamental to mechanical physics, and which explained Kepler's laws of planetary motion. Predicted the orbits of the planets. \nSubrahmanyan Chandrasekhar Extensive work on the internal mechanisms of stars, particularly known for determining the effect of special relativity on stars, including being the first to calculate the Chandrasekhar limit, which he did, without a calculator, on a boat journey. \nHenrietta Swan Leavitt Catalogued Cepheid variable stars in the Magellanic Clouds, in 1912 discovered the relationship between luminosty and periodicity in Cepheids -- leading to Hertzprung's later work. \nEjnar Hertzsprung determined the distance to several Cepheids, when Cepheids were detected in other galaxies such as the Andromeda galaxy, the distance to those galaxies could then be determined. \nEdwin Hubble Discovered the expansion of the universe. (Hubble's Law) The Hubble Orbiting Space Telescope was named in his honor.
37415
No, Jupiter can be seen without the aid of a telescope so there were millions of people before his time that would have seen Jupiter.  No one person can be credited with its discovery.\n\nHowever he is created with discovering Jupiter's four largest moons: Io, Europa, Callisto and Gandymede.  You do need a telescope to see those four and he was one of the first to use a telescope for astronomical purposes.  He made records of observing them.
510732
The religious answer would be that God created the sun and Adam discovered it. It certainly was not discovered by Galileo, that is just silly.\n\nThe scientific answer would be that it has been known since prehistoric times and was not discovered by any one person.
165369
Galileo was held under house arrest actually, not put in jail (see reference).\n\nScience is a human endeavor. There are plenty of human failings that we can observe in science. There are areas of science that are politically correct, and areas that are politically incorrect. \n\nFor example, at the moment in the US; SETI, earthquake prediction, precipitation forecasting, aritifical intelligence are all somewhat suspect fields of scientific study, and on the fringe of pseudoscience. That is because the mainstream body of science does not believe that these activities are likely to yield results, and given scarce resources, they should be discouraged. So scientists working in those areas might be tainted slightly with the association with suspect fields. \n\nAnother way a scientist might come to be called a pseudoscientist is if he ignores or is ignorant of generally accepted methods, techniques, scientific laws, is unable to answer criticisms of his work, etc. \n\nHowever, if such a pseudoscientist is successful, then opinions change. A lot of times, it can take many years for the opinions to change; sometimes long after the scientist is dead.
11086
oops... misread.\nNicolaus Copernicus proposed the sun-centric model.\nhttp://en.wikipedia.org/wiki/Copernicus\n\nI think the geocentric model was assumed since the beginning of time.  Everybody saw the sun revolving around the earth.  It was obvious...
205841
Not sure who was the 'first' but the Egyptian Ptolemy left records that show he knew the Earth was a sphere.  He even calculated its circumference fairly accurately.\n\nWhere he was incorrect, of course, was proposing a geocentric view of the universe with the Earth in the middle and fairly complicated system of orbits to describe the movement of the various visible astronomical bodies.  It wouldn't be until Copernicus over a thousand years later, until this particular view was corrected.
129672
Ha, good one!  The ancients belived that the sky was a solid dome (firmament), and the stars, planets, and sun were all attached to it and spun around on rails, or glass spheres.  This was, of course, proved wrong long ago by Copernicus and Galileo, the dawn of the space age only confirmed that their theories were true.
851325
I think the rings of Uranus are too tenuous to occlude starlight to a detectable degree. I don't believe those rings were actually discovered until we sent out probes to a point where they were directly visible. \n\n30 NOV 06, 1953 hrs, GMT.
533251
The Church insisted that the World is FLAT too, and that the Sun plus other planets revolve around it : And publicly humiliated and excommunicated Galileo for questioning their false premise !\n...Any and every organised religious order is basically a bunch of self-opinionated opportunists and politicians - masquerading as pious folk, to con all those who believe in their empty words !
190329
A sunspot is a region on the Sun's surface (photosphere) that is marked by a lower temperature than its surroundings and intense magnetic activity, which inhibits convection, forming areas of low surface temperature. Although they are blindingly bright, at temperatures of roughly 4000-4500 K, the contrast with the surrounding material at some 5700 K leaves them clearly visible as dark spots. Next year is expected to be a cyclical peak in the sunspot cycle
323806
Galileo was put in prison for theorizing that the earth was Not the center of the universe, and that it revolved around the sun.\n\nWhile in prison he invented the telescope. How's that for prison reform?
184575
Yes, he did.  If you have a good enough telescope, you can see the sites of all the Apollo moon landings.
381000
sunspots are associated with solar wind, which is streams of energy being projected outward from the sun's surface. When these energy particles reach the earth they interact with the earth's magnetic field, creating static, and disrupt the normal layering of the atmosphere that radio waves bounce back from. Northern lights are another effect of solar wind hitting the earth.
476714
Mercury has been observed for thousands of years, and the Babylonians are credited with mentioning it in writing for the first time some 3000 years ago.\n\n* Johann Hieronymus Schroeter was the first to observe the planet Mercury and record detailed drawings of Mercury's surface features. Schroeter lived from 1745 to 1816. Unfortunately, his sketches were not very accurate. \n\n* Streaks similar to the so-called "Martian Canals" were also seen on Mercury by Schiaparellit and Percival Lowell (1855-1916). \n\n* An astronomer by the name of Eugenios Antoniadi (1870-1944) charted the surface of Mercury in great detail. His maps were used for almost 50 years. He used one of the stronger telescopes of his time and found the canals to be optical illusions. \n\n* Mariner 10 provided a close look at Mercury which redrew earlier telescope charts and maps.