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The wonders of our universe
The wonders of our universe

... The Earth is part of our solar system. At the centre of this is the sun, which is the solar system’s star. Our solar system consists of the sun and objects connected to it by gravity – eight planets and some moons. The four smaller planets, Mercury, Venus, Earth, and Mars, are made of rock and metal ...
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... May 5, 6 - Eta Aquarids Meteor Shower: The Eta Aquarids is an above average shower, capable of producing up to 60 meteors per hour at its peak. Most of the activity is seen in the Southern Hemisphere. In the Northern Hemisphere, the rate can reach about 30 meteors per hour. It is produced by dust pa ...
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Another New Year`s Day Celebration

... and perihelion is only about 3,100,000 miles (5,000,000 km). This also tells us the Sun’s displacement from the center of Earth’s orbit is about 1.6 million miles, about six times the Earth-Moon distance. So, the variation in distance from perihelion to aphelion will change the apparent size of the ...
Astronomy Quiz Units 1 to 3
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... If the Earth were the size of a tennis ball, there would be 2.23 x 1010cm (22.3 billion cm) between Earth and the nearest star. b. How many kilometers would that distance be? 2.23 x 1010 cm (22.3 billion cm) is equivalent to 2.23 x 108 m and 2.23 x 105 km. 7. Describe the celestial sphere in a few s ...
UCCS PES 1050 Astronomy 1 WK Spring 2012 Assignment 1 name
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... into closer orbit around the sun. Named for Dutch astronomer Jan H. Oort. Orbit: the path of one body around another. In our solar system, each planet has its own distinctive orbit around the sun, and moons orbit most of the planets. The orbits of all the planets are slightly elliptical. Pluto's orb ...
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... Galileo used a telescope to discover that there were four moons orbiting Jupiter, and that Venus has a cycle of phases consistent with an orbit around the Sun rather than Earth. Thus the Earth was shown not to be the center of all things. He also discovered sunspots and thus solar rotation. His fin ...
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... distance to the Moon from Earth… that is pretty close) It is believed that the extinction of the dinosaurs and many other species was caused by an asteroid impact of some sort, 65 million years ago. A huge undersea crater off of Mexico is believed to the the impact site. A great deal of an element c ...
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HE Solar System is made up of the sun and its a family of eight

... ope degree from where they said it was. This planet has a diameter of about 33,000 miles and is at a distance of 2,800,000,000 miles from the sun around which-it revolves in 108years. I t cannot be seen by the naked eye on account of its distance. Neptune is accompanied by one. satellite which, like ...
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Orrery



An orrery is a mechanical model of the solar system that illustrates or predicts the relative positions and motions of the planets and moons, usually according to the heliocentric model. It may also represent the relative sizes of these bodies; but since accurate scaling is often not practical due to the actual large ratio differences, a subdued approximation may be used instead. Though the Greeks had working planetaria, the first orrery that was a planetarium of the modern era was produced in 1704, and one was presented to Charles Boyle, 4th Earl of Orrery — whence came the name. They are typically driven by a clockwork mechanism with a globe representing the Sun at the centre, and with a planet at the end of each of the arms.
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