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Space Infrared Telescope Facility (SIRTF) The Herschel Experiment
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Finding “brown dwarfs” helps us measure the mass of the universe.

Debris disks – signs of other solar systems?

Slide 16

Infrared Astronomy: Viewing the “Invisible”

Infrared Astronomy: Viewing the “Invisible”

Dust absorbs visible light and re-emits it in the infrared.

Some galaxies emit most of their light in the infrared.

Slide 17

Infrared Astronomy: Exploring the Early Universe

Infrared Astronomy: Exploring the Early Universe

Visible light from very distant objects is shifted to the infrared.

Just as the pitch of a train whistle changes as it passes an observer, the observed wavelength of light emitted by a moving object also shifts.

Slide 18

Why a Telescope in Space?

Why a Telescope in Space?

Infrared light is mostly absorbed by our atmosphere.

Slide 19

For More Information…

For More Information…

Michelle Thaller

thaller@ipac.caltech.edu

SIRTF Science Center,

California Institute of Technology

sirtf.caltech.edu

Space Science Education

Resource Directory

Teachspacescience.org

Origins Education Forum

Origins.stsci.edu

Click on “Educator Resources”,

and then select “Curriculum Support”

Slide 20

For More Information…

Slide 21

What is Infrared?

What is Infrared?

Remote controls use infrared light.

Our eyes see only part of the electromagnetic spectrum…

Slide 22

Planning Checklist

Planning Checklist

Materials:

Glass prism

Three alcohol thermometers

Flat black paint or a permanent black marker

Scissors or a prism stand

Cardboard box

Blank sheet of white paper

Tape

Binders, books, or blocks

Observation chart

Pencils or pens

Preparation:

Acquire materials

Blacken thermometer bulbs

Cut out notch in box for prism

Identify location and time for experiment

Try experiment

Slide 23

Visit Our Web-Site for More!

Visit Our Web-Site for More!

Much more available at sirtf.caltech.edu. Click on the “Education” button.

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