1.
Asteroid belt: -more than 100,000 asteroids orbit between Mars and Jupiter
-could have been a planet at one time
2.
Asteroids-planetoids: -are round or irregularly shaped rocky objects in space.
-could be debris left over from the formation of the solar system.
-can collide with planets causing craters
3.
Comet: -lumps of ice and rock that has a distinct nucleus.
-A hazy cloud called a Coma surrounds the nucleus forming the head.
-millions circle the sun
-has no light
4.
Constellation: a group of stars that form a pattern in the night sky.
Example: Big Dipper - Ursa Major, Little Dipper -Ursa Minor.
5.
Galileo: Used his telescope to look at space. Saw the moon close up and many more stars that the eye could see.
6.
Hans Lippershey: invented the first telescope
7.
Meteor: is a meteoroid that enters the Earth's atmosphere, burns up and falls as dust.
-Falls everyday on Earth
8.
Meteorite: meteor that does not burn up in the atmosphere and falls to Earth.
Every year over 100 hit the Earth.
9.
Meteoroids: -a piece of stony or metallic material that travels in space.
-often the size of a pebble, however some can weigh as much as one ton.
10.
Polaris: North Star, located directly above the North Pole at the tip of the Little Dipper.
11.
Reflecting telescope: gathers light in a curved mirror at the back of its tube. Reflects and focuses the light on a smaller mirror. Eyepiece contains lenses that can be changed to give you different magnifications.
Invented by Sir Isaac Newton
12.
Refracting telescope: is an instrument for viewing distant objects that uses two lenses to gather light and produce an image.
-Long and narrow tube
13.
Revolution: The movement of an object around another object or point. It takes the Earth 365 days or 1 year to make one revolution around the sun.
14.
Rotation: Spinning motion of an object on its axis. It takes 24 hours or one day for earth to make one complete rotation
15.
Star: huge globe of hot gasses that shines by its own light.
16.
Star movement: stars move due to the Earth's rotation and revolution
