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      <title>Astronomy Timeline Padlet by Nymierie S</title>
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      <description>important astronomers </description>
      <language>en-us</language>
      <pubDate>2022-01-27 14:20:24 UTC</pubDate>
      <lastBuildDate>2026-03-20 04:06:56 UTC</lastBuildDate>
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         <title>Hipparchus</title>
         <author>nls0416</author>
         <link>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2015963284</link>
         <description><![CDATA[<div>*190-120 BC<br>*A mathematician that measured the distance between the earth and the moon.&nbsp;<br>*Invented the Astrolabe</div>]]></description>
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         <pubDate>2022-01-27 14:27:03 UTC</pubDate>
         <guid>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2015963284</guid>
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         <title>Aristotle</title>
         <author>nls0416</author>
         <link>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2015999642</link>
         <description><![CDATA[<div>*384-322 BC<br>*Philosopher and polymath<br>*used the eclipse to assume that the earth was round based on the curve shadow on the moon.<br>*Belief was abandoned in middle ages</div>]]></description>
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         <pubDate>2022-01-27 14:41:40 UTC</pubDate>
         <guid>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2015999642</guid>
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         <title>Eratosthenes</title>
         <author>nls0416</author>
         <link>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2016010731</link>
         <description><![CDATA[<div>*276-194 BC<br>*Mathematician<br>*First successful attempt to establish the size size of the earth. Calculated the circumference of the Earth using the Post of Alexandria and the Well at Syene at different times of the day.</div>]]></description>
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         <pubDate>2022-01-27 14:46:09 UTC</pubDate>
         <guid>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2016010731</guid>
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      <item>
         <title>Claudius Ptolemy</title>
         <author>nls0416</author>
         <link>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2016030136</link>
         <description><![CDATA[<div>*100-170 AD<br>*Mathematician, astronomer, philosopher, geographer, and astrologer<br>*Believed in the geocentric model but proven incorrect by Galileo<br>*Shows the importance of incorrect answers because incorrect answers narrow what we perceive as truth<br><br></div>]]></description>
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         <pubDate>2022-01-27 14:54:25 UTC</pubDate>
         <guid>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2016030136</guid>
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         <title>Aristarchus</title>
         <author>nls0416</author>
         <link>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2016038265</link>
         <description><![CDATA[<div>*312-230 BC<br>*Mathematician and astronomer<br>*First Greek to believe in a heliocentric universe<br>*Took a while for people to accept his idea because the geocentric model dominated in western civilizations<br>*attempted to calculate the distance between the Earth, Sun, and Moon</div>]]></description>
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         <pubDate>2022-01-27 14:57:44 UTC</pubDate>
         <guid>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2016038265</guid>
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      <item>
         <title>Nicolaus Copernicus</title>
         <author>nls0416</author>
         <link>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2016055324</link>
         <description><![CDATA[<div>*1473-1543<br>*Polish mathematician and astronomer<br>*concluded that Earth is a planet and finalized the idea of a heliocentric universe</div>]]></description>
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         <pubDate>2022-01-27 15:04:28 UTC</pubDate>
         <guid>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2016055324</guid>
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         <title>Tycho Brahe</title>
         <author>nls0416</author>
         <link>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2016063932</link>
         <description><![CDATA[<div>*1546-1601<br>*Danish nobleman, astronomer, and writer<br>*Invented devices that measured the locations of celestial bodies<br>*Made more precise observations on the position of Mars</div>]]></description>
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         <pubDate>2022-01-27 15:07:52 UTC</pubDate>
         <guid>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2016063932</guid>
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         <title>Johannes Kepler</title>
         <author>nls0416</author>
         <link>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2016073651</link>
         <description><![CDATA[<div>*1571-1630<br>*German astronomer<br>*Played a key part in the 17th century scientific revolution<br>*Created what we know as the "law of planetary motion"</div>]]></description>
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         <pubDate>2022-01-27 15:11:36 UTC</pubDate>
         <guid>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2016073651</guid>
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         <title>Galileo Galilei</title>
         <author>nls0416</author>
         <link>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2016086046</link>
         <description><![CDATA[<div>*1564-1642<br>*Italian polymath<br>*Father of observational astronomy, modern physics, and scientific method<br>*Most important contribution were descriptions of the behavior of moving objects</div>]]></description>
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         <pubDate>2022-01-27 15:16:30 UTC</pubDate>
         <guid>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2016086046</guid>
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         <title>Sir Issac Newton</title>
         <author>nls0416</author>
         <link>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2021342992</link>
         <description><![CDATA[<div>*1643-1727<br>*English mathematician, physicist, astronomer, theologian, and author<br>*Asked a question!!&nbsp;<br>"why must apples always descend perpendicularly to the ground?"</div>]]></description>
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         <pubDate>2022-01-31 14:22:00 UTC</pubDate>
         <guid>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2021342992</guid>
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      <item>
         <title>Leonardo Da Vinci </title>
         <author>nls0416</author>
         <link>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2021348344</link>
         <description><![CDATA[<div>*1452-1519<br>*Italian polymath<br>*Made the determination that the phases of the moon came from the light from the sun reflecting on earth's surface(one of the most famous polymaths in history)</div>]]></description>
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         <pubDate>2022-01-31 14:23:49 UTC</pubDate>
         <guid>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2021348344</guid>
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         <title>Katherine Johnson</title>
         <author>nls0416</author>
         <link>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2021356196</link>
         <description><![CDATA[<div>*1918-2020<br>*born in West Virginia and graduated from West Virginia State<br>*Made it possible for Neil Armstrong to walk the moon with her precise mathematical calculations of the the orbital trajectory for the Apollo 11 mission</div>]]></description>
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         <pubDate>2022-01-31 14:26:15 UTC</pubDate>
         <guid>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2021356196</guid>
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      <item>
         <title>Mary Jackson</title>
         <author>nls0416</author>
         <link>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2021362160</link>
         <description><![CDATA[<div>*1921-2005<br>*Hampton Institute in mathematics and physical science<br>*Engineer<br>*Staunch advocate for the rights of women and minority groups in the STEM fields<br>*Extracted data from wind tunnel and flight tests</div>]]></description>
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         <pubDate>2022-01-31 14:28:22 UTC</pubDate>
         <guid>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2021362160</guid>
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      <item>
         <title>Christine Darden</title>
         <author>nls0416</author>
         <link>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2021369050</link>
         <description><![CDATA[<div>*1942-present<br>*Aeronautical Engineer<br>*Wrote the computer program for a sonic boom that led to sonic boom minimization studies for 25 years</div>]]></description>
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         <pubDate>2022-01-31 14:31:03 UTC</pubDate>
         <guid>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2021369050</guid>
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         <title>Dorothy Vaughan </title>
         <author>nls0416</author>
         <link>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2021379336</link>
         <description><![CDATA[<div>*1910-2008<br>*Key figure in the desegregation of the STEM fields<br>*Mathematician<br>*Math teacher during WW2<br>*First African American supervisor hired by NASA monitoring the "West Area Computing" unit<br><br></div>]]></description>
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         <pubDate>2022-01-31 14:34:01 UTC</pubDate>
         <guid>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2021379336</guid>
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         <title>Moon Landing</title>
         <author>nls0416</author>
         <link>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2027660357</link>
         <description><![CDATA[<div>*1969<br>*Neil Armstrong became the first man to walk on the moon during the race to space.</div>]]></description>
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         <pubDate>2022-02-03 14:59:35 UTC</pubDate>
         <guid>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/2027660357</guid>
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         <title>HOLA</title>
         <author>plantaramoraol</author>
         <link>https://padlet.com/nls0416/y0fgbcq3qdcgw3dk/wish/3832962220</link>
         <description><![CDATA[]]></description>
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         <pubDate>2026-03-20 04:06:55 UTC</pubDate>
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