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![Apollo 11: Walking on the Moon](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_apollo11.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
What did it take to put a man on the Moon? Visit Walking on
the Moon to experience the incredible Apollo 11 mission! |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![Arctic: A Friend Acting Strangely](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/Encyclopedia_SI/images/100_60_mnh_arcticstrange.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
Explore the Arctics changing climate and discover what
these changes mean for the Arcticand the rest of the planet |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![Arctic Wildlife Portfolio](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_science_arctic.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
Birds, mammals and sea mammals of the Arctic |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![Bird of the Month](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_sci_birds_featured.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
Browse through our essays on neotropical migratory birds |
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![Chandra Images: Zoom In](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_sao_zoom_in.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
Come fly with Chandra! Use this Flash tool to zoom in on a neutron
star, supermassive black hole, jet and more |
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![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![Chandra's Celestial Fireworks](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_science_snr.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
Chandra has provided spectacular examples of the remnants of
one of the most dramatic events in the cosmos |
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![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![Current Sky Information](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/100_60_sao_sky.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
A guide for sky watchers |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![The Dynamic Earth](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/Encyclopedia_SI/images/100_60_mnh-dynamic.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
The
Dynamic Earth
Geology, gems, and minerals subject guide |
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![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![Expedition to Galápagos](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_science_galapagos.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
Follows marine biologists on a research expedition to the remote
Galápagos Islands |
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![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![Galactic Navigation](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_science_galnav.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
Where are all those stars in the sky really located? Tour the
Galactic Coordinate System to find out |
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![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![Invasive Species](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_science_invasion.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
Information on marine creatures living outside their natural
habitat |
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![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![Invention at Play](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/Encyclopedia_SI/images/100_60_lem-invention.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
What do the inventors behind Post-it Notes®, Kevlar®,
Velcro® and the microwave oven have in common with children? |
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![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![The Kenneth E. Behring Family Hall of Mammals](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/Encyclopedia_SI/images/100_60_mammalhall.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
Invites visitors to explore the incredible diversity of mammals |
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![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![Living Fossils of the Deep: An Expedition to the Bahamian Sea Floor](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_science_fossils.jpg) |
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Scientists explore both the present and the past through the
natural history of deep-sea organisms and microorganisms |
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![Looking at Earth](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/100_60_nasm_looking.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
Shows how views of our planet from above have helped us to better
understand the Earth |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![Milestones of Flight](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/100_60_nasm_flight.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
Some major "firsts" in aviation and space history |
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![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![Natural History Research & Collections Highlights](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_nat_hist_research_collections.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
Features interesting and exiting research projects and collection
objects from the Museum |
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![Neighborhood Nestwatch](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_nestwatch.jpg) |
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Learn about bird biology and how different land uses affect
breeding bird populations |
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![Scientific Identity: Portraits from the Dibner Library](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_sciidentity.gif) |
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These scientific portraits are primarily scientists, natural
philosophers, engineers, and inventors |
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![Shade Grown Coffee](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_sci_birds_coffee.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
Many resources—from technical research to sources of "Bird Friendly®"
Coffee |
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![Swamp Sparrow](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_sci_birds_swsparrow.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
Learn about the secretive and little-known Coastal Plain Swamp
Sparrow |
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![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![The Indian River Lagoon Species Inventory](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_science_lagoon.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
3,000 species of animals and plants |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![The Quartz Watch](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/Encyclopedia_SI/images/100_60-lem-quartz.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
Learn about the people, the discoveries, and the innovations
that led to the development of the quartz watch |
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![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![Tracking Chandra](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_science_track.jpg) |
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See what the Chandra orbit looks like and view the current position
of Chandra in relation to the Earth |
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![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![Vote: The Machinery of Democracy](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_nmah_vote.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
Ballots and voting systems have evolved over the years, transforming
the ways in which Americans vote |
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![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![Whatever Happened to Polio?](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/exp_learn_nmah_polio.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
The story of the polio epidemic in the United States, from vaccine
development to current world efforts to stop polio |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
![The Wright Brothers & The Invention of the Aerial Age](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/Encyclopedia_SI/images/100_60_nasm-flight.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
Learn about the world's first successful airplane and its impact
on the world |
![](https://webarchive.library.unt.edu/eot2008/20081204194152im_/http://www.si.edu/images/t.gif) |
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