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Univers
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Univers > Space Missions
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Univers
The Universe today is very different from the Universe of the past and of the future. However, we can discover much about the past and the future from what we can current... |
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Venus : the Second Planet
Venus is the second planet from the Sun and the sixth largest. On June 8 2004, Venus will pass directly between the Earth and the Sun, appearing as a large black dot trav... |
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The Nine Planets
The Nine Planets is an overview of the history, mythology, and current scientific knowledge of each planet and the major moons in our solar system. Each page has my text... |
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Saturn, The Sixth Planet
Saturn is the sixth planet from the Sun and the second largest. In Roman mythology, Saturn is the god of agriculture. The associated Greek god, Cronus, was the son of... |
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Uranus, 7th Planet from the Sun
Uranus is the 7th planet from the Sun. It was discovered in 1781 by William Herschel and named for the Greek god personifying heaven. A blue-green gas giant, it has almos... |
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Neptune, 8th Planet from the Sun
Neptune is the eighth planet from the Sun and the fourth largest (by diameter). Neptune is smaller in diameter but larger in mass than Uranus.
In Roman mythology Nept... |
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Timeline of Lunar Exploration
In this site I let my fascination with the Moon explode in an idiosyncratic chronology of advances in understanding of the Moon.... |
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The Julian Calendar
The Julian calendar was introduced by Julius Caesar in 45 BC. It was in common use until the 1500s, when countries started changing to the Gregorian Calendar. However, so... |
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Ptolemy, Astronomer / Geographer
Claudius Ptolemy lived in Alexandria (in Egypt) from approx. 87 -150 AD. He was an astronomer, mathematician and geographer. He codified the Greek geocentric view of the... |
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Copernicus, Earth moves around the Sun
Nicolaus Copernicus was the first astronomer to formulate a comprehensive heliocentric cosmology, which displaced the Earth from the center of the universe. His epochal b... |
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Tycho Brahe
Tycho Brahe was born in Skane, then in Denmark, now in Sweden. His contributions to astronomy were enormous. He not only designed and built instruments, he also calibrate... |
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Galileo Galilei, Father of Modern Science
Galileo Galilei was an Italian physicist, mathematician, astronomer, and philosopher who played a major role in the Scientific Revolution. His achievements include improv... |
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Johannes Kepler, Laws Planetary Motion
Johannes Kepler is now chiefly remembered for discovering the three laws of planetary motion that bear his name published in 1609 and 1619). He also did important work in... |
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The Gregorian Calendar
The calendar used throughout the world today is the Gregorian calendar. It is sometimes called a "Christian" calendar. The Gregorian calendar is the one commonly used tod... |
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Andreas Cellarius, Cosmographer
Andreas Cellarius, the Dutch-German mathematician and cosmographer is well known to map historians and historians of astronomy as the author of the Harmonia Macrocosmica... |
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