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... match the observations, Ptolemy actually did try models with varying speeds for the planets and moved the Earth off-center among the planets’ paths.) The model explained why the planets never move far from the ecliptic, but treated Mercury and Venus as special cases in order to explain their small e ...
... match the observations, Ptolemy actually did try models with varying speeds for the planets and moved the Earth off-center among the planets’ paths.) The model explained why the planets never move far from the ecliptic, but treated Mercury and Venus as special cases in order to explain their small e ...
Trimester 1 Exam –Science 6 S C I E N C E 6 TRIMESTER I EXAM
... A This model places the Earth at the center of the Universe with all other heavenly bodies orbiting the Earth. B This model places the Sun at the center of the Solar System with all planets orbiting the Earth. C This theory suggests the Universe was created with a single cosmic explosion. The Univer ...
... A This model places the Earth at the center of the Universe with all other heavenly bodies orbiting the Earth. B This model places the Sun at the center of the Solar System with all planets orbiting the Earth. C This theory suggests the Universe was created with a single cosmic explosion. The Univer ...
Interiors of Jupiter and Saturn - University of Iowa Astrophysics
... Reasons for the interest and importance of Titan: it has a dense atmosphere and a hydrological cycle based on another compound. Despite its alien nature, in some ways it is the most Earth-‐like ...
... Reasons for the interest and importance of Titan: it has a dense atmosphere and a hydrological cycle based on another compound. Despite its alien nature, in some ways it is the most Earth-‐like ...
Final summative assessment: Astronomy
... over the last couple of decades. Due to these recent drastic and rapid “climate changes”, the South Pole is melting even faster than before, like an ice cube on a hot sidewalk. Due to these changes, the Earth is unevenly weighted and has begun to tip over. After consulting with NASA, you have ...
... over the last couple of decades. Due to these recent drastic and rapid “climate changes”, the South Pole is melting even faster than before, like an ice cube on a hot sidewalk. Due to these changes, the Earth is unevenly weighted and has begun to tip over. After consulting with NASA, you have ...
ReviewII
... Answer: The only correct statement here is : After Bowman releases the pen, the net force on the pen is zero. There is no gravity here and since nothing is touching the pen, there is no force on it (I am ignoring the small drag force due to the air in the centrifuge.). Before the pen is released, it ...
... Answer: The only correct statement here is : After Bowman releases the pen, the net force on the pen is zero. There is no gravity here and since nothing is touching the pen, there is no force on it (I am ignoring the small drag force due to the air in the centrifuge.). Before the pen is released, it ...
Presentation 2
... Venus has high mountains, many of which appear to be volcanic in origin. The bright region near the center in the polar hemispheric view is Maxwell Montes, the highest mountain range on Venus; it reaches an elevation of 11 km above average elevation (2 km more than the elevation of Mount Everest abo ...
... Venus has high mountains, many of which appear to be volcanic in origin. The bright region near the center in the polar hemispheric view is Maxwell Montes, the highest mountain range on Venus; it reaches an elevation of 11 km above average elevation (2 km more than the elevation of Mount Everest abo ...
Implications of the Search and Discovery of Life in the Universe
... • Especially for liquid water ...
... • Especially for liquid water ...
Script - ESA/Hubble
... System: a troubling but beautiful preview of what will happen when the Sun runs out of fuel more than five billion years from now. ...
... System: a troubling but beautiful preview of what will happen when the Sun runs out of fuel more than five billion years from now. ...
Slide 1
... way down the road to [Smith’s], but that's just peanuts to space." -The Hitchhiker’s Guide ...
... way down the road to [Smith’s], but that's just peanuts to space." -The Hitchhiker’s Guide ...
HISTORY OF ASTRONOMY Largely on the basis of
... circular motion, the Greeks sought to represent the motion of the divine celestial bodies by using spheres and circles. This explanatory method was not upset until KEPLER replaced the circle with the ellipse in 1609. Plato's student EUDOXUS OF CNIDUS, c.408-c.355 BC, was the first to offer a solutio ...
... circular motion, the Greeks sought to represent the motion of the divine celestial bodies by using spheres and circles. This explanatory method was not upset until KEPLER replaced the circle with the ellipse in 1609. Plato's student EUDOXUS OF CNIDUS, c.408-c.355 BC, was the first to offer a solutio ...
Solar System by Halfs
... 1. Examine the data above, your measures (in cm), the Actual distances in AU to the planets, and Bode’s Law predictions. How close are Bode’s Law predictions and your measurements to the ACTUAL AU distance? Hint: look at the ratios, not the actual measures. That is, Jupiter is 5.2 times as far as Ea ...
... 1. Examine the data above, your measures (in cm), the Actual distances in AU to the planets, and Bode’s Law predictions. How close are Bode’s Law predictions and your measurements to the ACTUAL AU distance? Hint: look at the ratios, not the actual measures. That is, Jupiter is 5.2 times as far as Ea ...
AST111, Lecture 1b
... the sun. We say they rotate in the prograde direction. They typically have obliquities < 30o • Pluto and Uranus are tilted with rotation axis nearly in the ecliptic plane. Obliquities are ~90o . • Venus has a retrograde rotation, obliquity > 90o. Venus’s obliquity is 177o. • Satellites often rotate ...
... the sun. We say they rotate in the prograde direction. They typically have obliquities < 30o • Pluto and Uranus are tilted with rotation axis nearly in the ecliptic plane. Obliquities are ~90o . • Venus has a retrograde rotation, obliquity > 90o. Venus’s obliquity is 177o. • Satellites often rotate ...
The Night Sky
... The magnitude system that astronomers use is based on the way our eyes scale the intensity of light, which is not linear but logarithmic. What do you think would be the advantage of having eyes which scale intensity in such a fashion? ...
... The magnitude system that astronomers use is based on the way our eyes scale the intensity of light, which is not linear but logarithmic. What do you think would be the advantage of having eyes which scale intensity in such a fashion? ...
Venus - Mr. Nussbaum
... What does this planet look like? Venus is sometimes called Earth’s sister planet, though its similarities with Earth are limited apart from size and relative condition of its surface. It is easily observed with the naked eye and is sometimes called the “evening star” or “morning star.” Venus is cove ...
... What does this planet look like? Venus is sometimes called Earth’s sister planet, though its similarities with Earth are limited apart from size and relative condition of its surface. It is easily observed with the naked eye and is sometimes called the “evening star” or “morning star.” Venus is cove ...
Unit 1
... • The length of time a star spends fusing hydrogen into helium is called its main sequence lifetime – Stars spend most of their lives on the main sequence – Lifetime depends on the star’s mass and luminosity • More luminous stars burn their energy more rapidly than less luminous stars. • High-mass s ...
... • The length of time a star spends fusing hydrogen into helium is called its main sequence lifetime – Stars spend most of their lives on the main sequence – Lifetime depends on the star’s mass and luminosity • More luminous stars burn their energy more rapidly than less luminous stars. • High-mass s ...
Rare Earth hypothesis
In planetary astronomy and astrobiology, the Rare Earth Hypothesis argues that the origin of life and the evolution of biological complexity such as sexually reproducing, multicellular organisms on Earth (and, subsequently, human intelligence) required an improbable combination of astrophysical and geological events and circumstances. The hypothesis argues that complex extraterrestrial life is a very improbable phenomenon and likely to be extremely rare. The term ""Rare Earth"" originates from Rare Earth: Why Complex Life Is Uncommon in the Universe (2000), a book by Peter Ward, a geologist and paleontologist, and Donald E. Brownlee, an astronomer and astrobiologist, both faculty members at the University of Washington.An alternative view point was argued by Carl Sagan and Frank Drake, among others. It holds that Earth is a typical rocky planet in a typical planetary system, located in a non-exceptional region of a common barred-spiral galaxy. Given the principle of mediocrity (also called the Copernican principle), it is probable that the universe teems with complex life. Ward and Brownlee argue to the contrary: that planets, planetary systems, and galactic regions that are as friendly to complex life as are the Earth, the Solar System, and our region of the Milky Way are very rare.