Developed three laws 1)planets orbit the sun in elliptical 2) the speed of the planets in their orbit around the sun is roughly proportional to the distance from the Sun. . 3) the period squared is proportional to the length of the orbit with each planet obeying the same proportionality constant. 1564-1642 Galileo constructed the first telescopes and gathered evidence for the Copernican theory and Kepler's third law all of these...

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http://quest.eb.com/search/132_1299822/1/132_1299822/cite When an exoplanet passes directly between its star and Kepler's line of sight, it dims a minuscule portion of the star's light. ... Kepler-442b is an exoplanet that is found in the habitable zone, or "Goldilocks" zone of a star that is approximately 1120 light years away (10.6 x 1015 km). ... Currently, there are no [known] methods of transportation to get to a planet hundreds of light years away. ... Another problem for a mission to this exoplanet would be, if there we a vessel that could go there, it would be a ch...

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On 18 February 2002, while conducting repairs on the Hubble Telescope, one of the astronauts exclaimed that he had seen a bright flash of light off in the distance. ... One of the more famous UFO sightings occurred just outside of Roswell New Mexico on the evening of July 3, 1947 when Dan Wilmot, a respected business owner, and his wife were sitting on their front porch when they saw a bright saucer shaped object with glowing green lights, moving across the sky at incredible speed. ... The object also had a central red light that changed from red to orange. ... When the F-16 pilots attemp...

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The more massive the star means more gravity and tremendous temperature and pressure which speeds up the process of fusing hydrogen into helium. ... The size (radius) of the black hole=mass of the black hole X (2G(gravitational constant)/ c^2(speed of light)). ... Black holes consume all matter around them including light. The black hole is powered by its gravity drawing in everything around it causing atoms to crash together at high speeds in a violent manner. ...

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But, the Andromeda galaxy is 4 times as large as the milky way and is located 2 million light years away from us and can be seen through the southern hemisphere of the galaxy. ... He noticed that distance galaxies have a red shift meaning the wavelength in the light is shifting from a short wavelength to a long wavelength. ... Another is the speed of the universe's expansion is greater than the escape velocity and the universe will expand forever. ... These are just theories however, the most widely accepted theory is that the speed of the universe will cause it to expand forever accor...

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During the life of a star, it undergoes a process called nuclear fusion, which produces a number of different elements and a huge abundance of heat and light energy (Goldsmith, p. 55). ... Due to the extreme amount of mass, the core exerts a force so strong that everything contained in the star is forcefully pushed outward at an extremely high rate of speed. When the star explodes, the force created is so powerful that it will utterly destroy anything within a ten light year radius of the explosion (Wheeler, p.147). ... A black hole creates an inward force so powerful that not even light ha...

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It takes approximately 8 minutes and 20 seconds for light to travel from the sun to the Earth. () It's safe to assume that by the time we found out it was gone, confusion and panic would ensue. Not only that but at the moment in time in which we discovered the sun was gone, we would lose its gravitational influence, "and Earth would fly out in a straight line tangent to where ever it was in its orbit" () This is because gravitational force propagates in waves moving at the speed of light. ... We would still have the rest of the galaxy producing light. ... So by the billion year...

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Long ago, before our planet earth existed, our solar system was a spherical cloud of gas and dust, and as wide as a light year (9.5 trillion kilometers across). ... That is just what we can see, because we can only see and look so far, due to the limitation of light. ... If we sent out radio waves of communication, at the speed of light it would take roughly 2.3 million years to get there. ... And a trip from one galaxy billions of light years away to another galaxy could seem like going from town to town for humans. ...

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