Yuri Gagarin's First Orbit - Watch the Film
APOD: 2011 May 10 - Gravity Probe B Confirms the Existence...
Spacewalk - the blue sky below us
Breathtaking pictures of Astronaut Spacewalks with our blue planet visible below.
NASA Celebrates Earth Day With Stunning Photos Of, You Guessed...
2011 Will Be Filled With Plenty Of Solar Weather
Incredible Space Pics from ISS by NASA astronaut Wheelock...
Incredible Space Pics of earth and moon, taken from ISS by NASA astronaut Wheelock.
Curiosities: The Lunar Cycle
Astronauts Give Isaac Newton a Gravity-Free Tribute
Astronauts on the International Space Station have given a zero gravity tribute to famed 17th century scientist Sir Isaac Newton in honor of his pioneering work to understand the laws of gravity - which they're currently defying.
NASA - Crescent Earth
Robert Ballard: Exploring the ocean's hidden worlds
The full story of Earth-impacting asteroid 2008 TC3
The Problem of Space Travel, Table of Contents
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