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Celestial Objects in Space

In addition to the Sun and The planets of our solar system, What else is out there?. Celestial Objects in Space. Moons/Satellites. Large natural objects which revolve around a planet many planets have more than one moon Earth’s moon has no atmosphere and has hills/valleys/craters

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Celestial Objects in Space

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  1. In addition to the Sun and The planets of our solar system, What else is out there? Celestial Objects in Space

  2. Moons/Satellites Large natural objects which revolve around a planet many planets have more than one moon Earth’s moon has no atmosphere and has hills/valleys/craters after the invention of the telescope Galileo saw 4 moons of Jupiter Moons can come in a variety of size and with a variety of surfaces

  3. Stars • A STAR is a luminous ball of plasma that is held together by gravity. • What is the nearest star to Earth? • What is the nearest star to the Sun?

  4. Stars • Polaris • pole star for the Northern Hemisphere • 390 light years from Earth • part of a binary star system • Sirius • the brightest star in the sky (70 times more luminous than the sun) • 8.6 light years from the Earth • Betelgeuse • one of the brightest stars in the sky • supergiant • 1,000 times bigger than the Sun but cooler than the Sun

  5. How do all the satellites stay in Orbit • Satellites stay in orbit due to the balance of two factors: • velocity, or the speed at which it would travel in a straight line • the gravitational pull between the Earth and the satellite. • Satellites never fall into the Earth this because Earth is round and curves. • In order for a satellite to successfully orbit the Earth, it actually FALLS around the Earth… kept from falling in by it’s own momentum, and kept from escaping into space by gravity • Such a projectile is an orbiting satellite. http://www.youtube.com/watch?v=J4gGalZV8TM&safety_mode=true&persist_safety_mode=1&safe=active

  6. Looking further at Eclipses • What is an Eclipse? • The partial or complete obscuring, relative to a designated observer, of one celestial body by another.

  7. Solar Eclipse • This is the complete or partial covering/obscuring of the sun by the moon

  8. Lunar Eclipse • This is the complete or partial covering/obscuring of the moon by the Earth’s shadow

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