Does Zero Gravity Exist? If so, what is it?. Gravity holds many objects together in orbits. Moons…
Planetary Satellites SatelliteAny body that orbits antoher Natural satellites are moons 6 of the 8...
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Transcript of Planetary Satellites SatelliteAny body that orbits antoher Natural satellites are moons 6 of the 8...
Planetary Satellites
• Satellite • Any body that orbits antoher
• Natural satellites are moons
• 6 of the 8 planets have at least one moon
• Mercury and Venus do NOT have a moon
• Earth • 1 moon
• Mars • 2 moons• Phobus & Deimos
• Jupiter • At least 28 moons• 4 largest are Io,
Ganymede, Europa and Callisto
• Saturn • 24 moons• Largest is Titan
• Uranus • 21 moons• 5 major moons are
Titania, Oberon, Umbriel, Ariel and Miranda
• Neptune • 8 moons• Triton is the largest
• Pluto • 1 moons• Charon – almost the
same size as Pluto
Solar System Debris
• Comets • A mixture of dust, gas and ice that orbits the sun
• Nicknamed “dirty snowballs”
• Haley’s comet comes around every 76 years, last seen in 1986
• Comet • Coma (ice and dust) and a tail (gas)
• Comets orbit the sun….
• The tail of the comet gets “blown” away by the solar wind
• Asteroids • Solid, rock-like fragments orbiting the sun between mars and jupiter
• Meteoroids • Icy, rocky fragments anywhere in space
• Meteors • Meteoroids that enter Earth’s atmosphere and begin to “burn” due to the presence of oxygen
• Meteor Showers • “shooting stars”
• Meteorites • A meteoroid that survives the trip through our atmosphere and actually impacts the Earth’s surface, forming impact craters