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----------------- 1742 - Astronomy Facts One.
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-. There are 88 star constellations like Orion, Leo, Pisces, etc., including the 12 constellations that are in astrology. I am a Capricorn, one of the 12 constellations the Sun and planets pass through during the course of a year orbiting the Sun. One orbit looks through 360 degrees of star constellations.
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-. The largest moon of Jupiter, Ganymede, is larger than the planet Mercury.
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-. Our closest star, Proxima Centura, is 4.2 light-years away, that is 24,696,000,000,000 miles away..
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-. 8,692 craters on the moon and water ice was found on the one named Cabeus Crater.
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-. Europa is a moon of Jupiter that has plate tectonics , similar to that found on Earth.
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-. Enceladus, a moon of Saturn, has a subsurface ocean that feeds geysers that shoot ammonium water into space.
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-. The most luminous star, the brightest, that we can see with the naked eye is 34 Cygni. It is 610,000 times brighter than our Sun.
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-. If the Earth was the size of a tennis ball the Sun would be 24 feet across and a ½ mile away.
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-. Last October 19, 2014, a comet passed within 87,000 miles of Mars
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-. If there was a tunnel 8,000 miles long through the center of the Earth and you jumped in you would reach a top speed of 17,670 miles per hour, and, you would reach the other side in 42 minutes and 12 seconds.
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-. Only 40% of the Sun's light energy is visible light. 50% is infrared, and 10% is ultraviolet.
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-. The biggest black hole found weighs 21,000,000,000 Solar Mass.
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-. The Sun is 73.9% hydrogen, 24.69% helium, 0.63% oxygen, 0.22% carbon, and 0.17% neon. That total is 99.61%, the remaining are trace elements.
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-. The Kepler Space Telescope launched in 2009 has discovered 4,183 planet candidates, 996 of these are confirmed to be planets orbiting other stars.
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-. The Boomerang Nebula has a temperature of 1 degree Kelvin above absolute zero, which is -273 degrees centigrade.
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-. There is one crater on Mars that covers 40% of the surface.
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-. Our Earth's equator rotates 1,038 miles per hour. The star Altair Aquilae rotates 640,800 miles per hour.
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-. The Sun contains 99.86% of all the mass in the Solar System.
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-. The mass of the Universe has been calculated to be 13,798,000,000 years old.
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-. Saturn is the only planet having a density less than water, water is 1,000 kilograms per cubic meter.
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-. The surface of the planet Venus is 864 degrees Fahrenheit, at least 75 degrees Fahrenheit hotter than the planet Mercury that is 31 million miles closer to the Sun.
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-. The Sun converts 4 million tons of mass to energy every second. E = mc^2, E = 384.6 *10^24 watts per second. The Earth receives 1 / 2,000,000,000th of this energy.
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-. 75% of all normal matter in the universe is hydrogen.
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-. 132 of the 59,379 meteorites found on Earth came from Mars.
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-. Venus has no seasons because its north rotating pole always points toward the Sun. Uranus is laying on its side making its seasons last 21 years.
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-. 1,300,000 Earths could fit inside the sphere of the Sun.
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-. There are an estimated 125,000,000,000 galaxies in the Observable Universe.
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-. The largest meteorite found on Earth is Hobairon, and it weighs 60 tons.
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-. In January the Earth is 1,300,000 miles closer to the Sun than it is in July. So, why are the seasons the opposite of to what is expected?
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-. The Full Moon appears as ½ arc degree, 31 arc minutes. This is equivalent to a quarter viewed at a distance of 8.85 feet. Mars is 25.1 arc seconds, equivalent to a quarter at 650 feet away.
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-. Cosmic inflation started 10^-36 seconds after the Big Bang and lasted 10^-33 seconds. The expansion was a factor of 10^50 reaching the size of a softball.
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-. The asteroid Vesta has the tallest mountain rising 14 miles above the surface.
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Note: If you like these astronomy facts there are 4 of them each a couple of pages.
Reply for copies.
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