SYSTEMS IN SPACE

SATELLITES

• Placed in orbit around the earth, moon or another planet to collect data and communication
• Have antennas that send and receive information to and from earth.
• Distance from earth effects the strength of the signal and where it can transmit and receive.

TELESCOPES

• Telescopes are instruments used to see far away objects of interest.
• The basic idea is to collect a lot of light and enlarge it.
• They ate classified as either reflector, refractor, or catadioptric.
• (Based on weather they use mirrors and/or lenses to view object)
• New planets, stars and celestial bodies have been found by using them.

PLANETS

• Planets come in all shapes and sizes
• Almost all planets have an atmosphere
• Planets orbit the sun
• There are several ways planets can be categorized
• Planets have unique characteristics

ASTEROIDS

• Though they may be small, asteroids are a threat to our Earth and the human race.
• Asteroids come in all different shapes and sizes.
• They have no atmospheres, but can be large enough to exert a gravitational pull
• Almost all asteroids fall into three different classes based on how they were made.
• Scientists are still exploring and evaluating asteroids today.