<del id="dtbb1"></del><span id="dtbb1"></span>
<strike id="dtbb1"><dl id="dtbb1"><ruby id="dtbb1"></ruby></dl></strike><span id="dtbb1"></span>
<span id="dtbb1"><video id="dtbb1"><span id="dtbb1"></span></video></span>
<span id="dtbb1"></span>
<strike id="dtbb1"><dl id="dtbb1"><span id="dtbb1"></span></dl></strike>
<span id="dtbb1"><dl id="dtbb1"></dl></span><strike id="dtbb1"><i id="dtbb1"></i></strike> <strike id="dtbb1"><dl id="dtbb1"><del id="dtbb1"></del></dl></strike>
<span id="dtbb1"></span>
<ruby id="dtbb1"><dl id="dtbb1"></dl></ruby>
<ruby id="dtbb1"><i id="dtbb1"><del id="dtbb1"></del></i></ruby>
<span id="dtbb1"></span><span id="dtbb1"></span>
<strike id="dtbb1"></strike>
<span id="dtbb1"><video id="dtbb1"><ruby id="dtbb1"></ruby></video></span>
<th id="dtbb1"></th><span id="dtbb1"><video id="dtbb1"></video></span>
<th id="dtbb1"><video id="dtbb1"><span id="dtbb1"></span></video></th>
Skip to main content

Science and Technology

Andromeda Galaxy. Wikimedia Commons (Public Domain)
Galileo. Wikimedia Commons (Public Domain)

Science and technology is quite a broad category, and it covers everything from studying the stars and the planets to studying molecules and viruses. Beginning with the Greeks and Hipparchus, continuing through Ptolemy, Copernicus and Galileo, and today with our work on the International Space Station, man continues to learn more and more about the heavens.
From here, we look inward to biochemistr ... Read more

More From encyclopedia.com

曰本真人做爰免费