1. LT 3: I can compare refracting and reflecting telescopes.
Telescope: an instrument that collects EMR from the sky and concentrates it for better observation.
Reflecting Telescopes
Uses mirrors to gather and focus light
Light is reflected off of one lens onto a 2nd mirror which then reflects the light to the eyepiece
Mirrors can be very large without affecting the quality of the image
Refracting Telescopes
Use lenses to bend light (refraction)
Objective lens gathers light
Eyepiece lens magnifies the light
Lens focuses different wavelengths of light at different distances which limits the size of the objective lens.

2. Light Telescopes Nonvisible EMR Telescopes
LT 4: I can explain how telescopes for nonvisible electromagnetic radiation differ from light telescopes.
Nonvisible EMR Telescopes
Each type of EMR must have its own telescope
Affected by Earth’s atmosphere
Most of these telescopes are in space
Hubble Space Telescope
Chandra X-ray Observatory
Spitzer Space Telescope (infrared telescope)
Light Telescopes
Reflecting and Refracting Telescopes
Largest Reflecting Telescopes are in HI

3. Keck Telescopes

4. Other Spacecraft Voyager 1 & 2 Galileo Cassini-Huygens
Launched in 1977
Investigated Jupiter, Saturn, Uranus, and Neptune
Galileo
Orbited Jupiter and its moons from 1995 – 2003
Cassini-Huygens
Launched in 1997 and began orbiting Saturn in 2004
Spirit & Opportunity
Explore Mars beginning in 2004
Confirmed water had once been on Mars
Curiosity
Most recent rover sent to Mars
Started exploring the surface in Summer 2012
NASA Space Spinoffs
Space Spinoff Game
Curiosity Pictures

5. Other Exploration Humans first went into space in 1960s
NASA landed 12 people on the Moon
2 major Shuttle losses
1986 Challenger
2003 Columbia
Satellites
Provide weather information
Broadcast TV signals
GPS