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----------------- 1744 - Astronomy Facts Three
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- Jupiter has 67 moons, Saturn has 62, Uranus has 27, Neptune has 14, Pluto has 5, Mars has 2, and Earth only one.
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-. It takes a photon 40,000 years on average to emerge from the surface of the Sun after being created in the core.
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-. Dark Matter is 85 % of the total matter and 26.8 % of the total matter-energy.
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-. Earth orbits the Sun at 66,616 miles per hour, on average.
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-. 20 % of the Cosmic Background Radiation comes from Blackholes’ accretion disks.
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-. Jupiter takes 4 days to travel the width of a Full Moon, one half degree. Pluto takes 130 days to travel the width of the Full Moon.
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-. The Andromeda Galaxy, M 31, has a mass exceeding 1 trillion Solar Mass.
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-. Our North Star, Polaris, is the 48th brightest star in the sky.
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-. The less massive star the longer it lives, burning fuel more slowly. A Red Dwarf star
8 % the mass of the Sun lives for 11 trillion years.
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-. Jupiter's Great Red Spot has shrunk from 25,500 miles across in the year 1800 to 10,250 miles across in the year 2014.
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-. The closest and fastest star speeding away from the center of our galaxy is traveling 1,065,600 miles per hour.
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-. Earth continuously produces 22 trillion watts of energy in radioactive decay of uranium and thorium.
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-. We have four seasons thanks to Earth's tilt to the plane of orbit by 23.437458 degrees.
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-. Earth's sunrise takes 2.13 minutes.
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-. A person weighing 200 pounds at the North Pole. Would weigh 199 pounds at the equator due to centrifugal force. The equator is rotating over 1000 miles per hour.
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- Venus rotates at its equator only 4 miles per hour.
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- Each year the Earth gets 100,000 cubic miles of rain due to water evaporation.
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- The air on Mars is 100 times thinner than the air on Earth.
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- If you would drive your car at 70 miles per hour to the nearest star it would take you 356 billion years to get there.
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- What is the escape speed to leave the gravity pull of the Milky Way Galaxy? 1,230,000 miles per hour.
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- 80% of the stars in the Universe are smaller than our Sun
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- Each second 100 trillion neutrinos pass through your body, Ouch!
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- Red Giant stars in the Milky Way halo are 890,000 lightyears away. The diameter of the Milky Way is 100,000 lightyears.
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- The majority of Blackholes only have a diameter of 18 miles.
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- The massive star in the Large Megellanic Cloud galaxy is 265 Solar Mass and 8,700,000 times the Sun’s Solar Luminosity.
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- If the Earth was compressed into a Blackhole it would have a diameter of ¾ inches.
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- The Blazar emits enough energy in one second to power the Sun for 317,000 years.
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- The smallest galaxy only has 1,000 stars.
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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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