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a group of stars that appears to form a pattern in the sky
crosses orbits with Neptune
total of 88 different constellations can be seen in the north and south hermispheres.
as you move north you can see more stars. |
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combining of nuclei of lighter elements from heavier elements.
ex. Sun
Hydrogen-Helium |
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| earthlike, rocky crust, dense mantle and core |
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| the smallest of 4 inner planets. (terrestrial planets) |
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| similar in size to earth, mass and gravity. |
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| orbits sun, spherical, not a satellite (moon) |
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| now considered a sward planet |
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| Mercury, Venus, Earth, Mars, Saturn, Jupiter, Uranus, Neptune |
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1. Collect Light
2. Magnify Images
3. Separate Distance Objects
4. use as a camera. |
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| Two Types: Refractor and Reflector |
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| Radio Telescopes, Infrared, Microwaves,X-Rays, Gamma Rays |
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Location-Earth
Structure- Large Metal Dish |
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| COBE Cosmic Background explorer. Discovered evidence of the Big Bang. Launched in 1981. |
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| GRO Gamma Ray Observatory |
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| Physical Properties of the Moon |
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2160 Miles Diameter
Less Dense than Earth
1/6 gravity of Earth |
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Do NOT look directly at a solar eclipse
Sun is BEHIND. |
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