tools and technology space objects by: brittany d. alexander
TRANSCRIPT
Tools and Technology
Space Objects
By: Brittany D. Alexander
GRAVITY!
What keeps things grouped together in
space?
Earth is made up of 3 major groups:
• Solar System: planets (and other stuff) revolve around the sun.
• Milky Way: Our solar system and millions of stars.
• Universe: All of space and everything in it.
Astronomers use telescopes, satellites,
space probes, and spectroscopes to
make observations and collect data about
objects in the solar system and outside of
the solar system.
Telescopes
Optical Telescopes: collect and focus the light producing larger, brighter images of far away things.
Two Types:
1. Refracting Telescopes
2. Reflecting Telescopes
Refracting Telescopes
Refracting Telescopes use a curved a convex lens to focus collected light.
Reflecting Telescopes
Reflecting Telescopes use a mirror to focus the collected light.
Optical Telescopes
work best when …
• They are placed in rural areas (away from lights).
• on mountaintops. (less atmospheric pressure)
Radio Telescope
Radio Telescopes receive radio waves emitted from objects in space, including waves from very distant stars and galaxies.
It can receive
information in any
weather and during day or night!
A Few More…
• The ‘Hubble Space Telescope’ is a reflecting telescope that produces reads of infrared radiation.
• The ‘Chandra X-Ray Observatory is a refracting telescope and was placed in space to read X-Ray signals.
What do you notice about the last two
telescopes?
They are placed where Earth’s atmosphere does not block or
absorb the signals!