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Informal education  
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Astrophysics  
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This Hubble Space Telescope image of galaxies appears to form the number 10. The text describes the image and provides a brief explanation of why astronomer Halton Arp compiled his catalogue of odd-looking galaxies in the 1960s. In the accompanying... (View More)

Audience: High school, Informal education
Materials Cost: Free

The Hubble Ultra Deep Field lithograph shows the deepest visible light observation of the early universe. In vibrant contrast to the image's rich harvest of classic spiral and elliptical galaxies, there is a zoo of oddball galaxies littering the... (View More)

This Hubble Space Telescope image shows the diversity of galaxies in the universe. A huge elliptical galaxy, designated ESO 325-G004, dominates the image. In addition to many elliptical and spiral galaxies, the image contains a few small irregular... (View More)

The lithograph contains a Hubble Space Telescope image that shows the colorful Planetary Nebula NGC 2440 with one of the hottest known white dwarf stars at its center. The text briefly explains the process of stellar death of sun-like stars and... (View More)

Audience: High school, Informal education
Materials Cost: Free

In this activity, a three-part questionnaire launches students on discussions about where objects in space are located, and when they formed. By physically manipulating images of objects in space, students represent their own mental models of space... (View More)

In this activity, students solve exponential equations where the unknown is contained in the exponent. Students learn that taking base-10 or base-2 logs pulls down the exponent, allowing the unknown to be isolated and solved.  This activity is... (View More)

In this activity students convert antilogs to logs, and logs to antilogs using scientific notation as an intermediate step. They will thereby develop a look-up table for solving math problems by using logarithms. This is activity D2 in the "Far Out... (View More)

In this activity, students construct base-two slide rules that add and subtract base-2 exponents (log distances), in order to multiply and divide corresponding powers of two. Students use these slide rules to generate both log and antilog equations,... (View More)

In this activity students use log tapes and base-two slide rules as references to graph exponential functions and log functions in base-10 and base-2. Students discover that exponential and log functions are inverse, reflecting across the y = x axis... (View More)

In this activity students construct multiplying slide rules scaled in Base-10 exponents and use them to calculate products and quotients. They will come to appreciate that super numbers (exponents, orders of magnitude and logarithms) play by... (View More)

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