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class16.ppt [Read-Only] - University of Texas Astronomy Home Page
... which suggests that the formation of a planetary system (star plus accompanying system) must be common ...
... which suggests that the formation of a planetary system (star plus accompanying system) must be common ...
Our Solar System
... entirely of hydrogen and helium. • Saturn has many rings made of ice. Saturn’s rings are very wide. They extend outward to about 260,000 miles from the surface but are less than 1 mile thick. • Saturn has 18 known moons, some of which orbit inside the rings! • It takes Saturn about 30 years to orbit ...
... entirely of hydrogen and helium. • Saturn has many rings made of ice. Saturn’s rings are very wide. They extend outward to about 260,000 miles from the surface but are less than 1 mile thick. • Saturn has 18 known moons, some of which orbit inside the rings! • It takes Saturn about 30 years to orbit ...
Lecture - Faculty
... • The current layout of our solar system may bear little resemblance to its original form • This view is more in line with the “planetary migration” thought to occur even more dramatically in many extrasolar planet systems • It may be difficult to prove or disprove these models of our early solar sy ...
... • The current layout of our solar system may bear little resemblance to its original form • This view is more in line with the “planetary migration” thought to occur even more dramatically in many extrasolar planet systems • It may be difficult to prove or disprove these models of our early solar sy ...
Questions for this book (Word format)
... It took astronomers many years to realise that some of the “fuzzy patches” or “nebulae” in the night sky are actually galaxies like the Milky Way. One reason for this was that only some of the objects catalogued as “nebulae” are actually galaxies. List at least three types of nebula which are not ex ...
... It took astronomers many years to realise that some of the “fuzzy patches” or “nebulae” in the night sky are actually galaxies like the Milky Way. One reason for this was that only some of the objects catalogued as “nebulae” are actually galaxies. List at least three types of nebula which are not ex ...
Astronomy and Space articles by Martin George of the Launceston
... Many readers, no doubt, have watched one or more of the famous science fiction movies or series, with spectacular planetary landscapes and weird atmospheric effects. Some of them have two moons in the sky - quite a possible scenario for some planets, although we of course have only one. Another type ...
... Many readers, no doubt, have watched one or more of the famous science fiction movies or series, with spectacular planetary landscapes and weird atmospheric effects. Some of them have two moons in the sky - quite a possible scenario for some planets, although we of course have only one. Another type ...
solar system - Teaching Children
... The sun is ______ Star of solar system. The Earth is the _______ of the universe. Mercury is _______ than Uranus. Jupiter is _______ than Venus. The Moon is ________ than mercury ...
... The sun is ______ Star of solar system. The Earth is the _______ of the universe. Mercury is _______ than Uranus. Jupiter is _______ than Venus. The Moon is ________ than mercury ...
Building Our Solar System Profile - Grade91P
... - rocky remains from formation of our solar system 4.6 bil. Years ago - rocks of various sizes: a few feet to several miles in diameter -Ceres: largest asteroid 950 km wide -Jupiter and Mars can absorb these asteroids or fling them into orbits of other planets ...
... - rocky remains from formation of our solar system 4.6 bil. Years ago - rocks of various sizes: a few feet to several miles in diameter -Ceres: largest asteroid 950 km wide -Jupiter and Mars can absorb these asteroids or fling them into orbits of other planets ...
Planets in our solar system
... Jupiter is the largest planet in the Solar System. There is a big red spot on Jupiter which is a giant storm that is at least 300 years old. It is mainly made up of Hydrogen. It is named after the Roman god Jupiter which was the king of the gods and the god of sky and thunder. ...
... Jupiter is the largest planet in the Solar System. There is a big red spot on Jupiter which is a giant storm that is at least 300 years old. It is mainly made up of Hydrogen. It is named after the Roman god Jupiter which was the king of the gods and the god of sky and thunder. ...
3OriginofPlanetsandMoons
... •Planets formed when bits of matter first collided and aggregated into small, irregular shapes (planetesimals), and eventually formed into larger planets. •As the planets formed, the more dense ones were pulled closest to the sun. They are called Terrestrial Planets (Mercury, Venus, Earth, and Mars) ...
... •Planets formed when bits of matter first collided and aggregated into small, irregular shapes (planetesimals), and eventually formed into larger planets. •As the planets formed, the more dense ones were pulled closest to the sun. They are called Terrestrial Planets (Mercury, Venus, Earth, and Mars) ...
Summary from last lecture
... overcome rigid body forces so that it assumes a shape under hydrostatic equilibrium => must be “round” (and not potato-shaped!) An irregular solid body will deform under self-gravity to hydrostatic equilibrium when: internal pressure ~ tensile strength ...
... overcome rigid body forces so that it assumes a shape under hydrostatic equilibrium => must be “round” (and not potato-shaped!) An irregular solid body will deform under self-gravity to hydrostatic equilibrium when: internal pressure ~ tensile strength ...
Article on Pluto (for 1st science news)
... is a great step forward in astronomy. "Pluto would never be considered a planet if it were discovered today, and I think the fact that we've now found one Kuiper-belt object bigger than Pluto underscores its shaky status." The resolution The decision establishes three main categories of objects in o ...
... is a great step forward in astronomy. "Pluto would never be considered a planet if it were discovered today, and I think the fact that we've now found one Kuiper-belt object bigger than Pluto underscores its shaky status." The resolution The decision establishes three main categories of objects in o ...
14.2 The Solar System Solar System: made of 9 planets and
... Uranus o Axis tilted almost even with plane of its orbit (12 o’clock hand tilted to nearly 3) Saturn o Several broad rings made of hundreds of smaller rings made of ice and rock Jupiter o Largest planet, Great Red Spot is a huge red whirlwind rotating slowly around middle of planet, 28 moons, Io moo ...
... Uranus o Axis tilted almost even with plane of its orbit (12 o’clock hand tilted to nearly 3) Saturn o Several broad rings made of hundreds of smaller rings made of ice and rock Jupiter o Largest planet, Great Red Spot is a huge red whirlwind rotating slowly around middle of planet, 28 moons, Io moo ...
Solar System Formation
... • Planet travels in front of star, blocking some of stars light, which we can measure ...
... • Planet travels in front of star, blocking some of stars light, which we can measure ...
Astronomy Basics
... massive as Earth. These cores are so massive that they accrete gas, forming gas giant planets. ...
... massive as Earth. These cores are so massive that they accrete gas, forming gas giant planets. ...
The Solar System Planets, Moons and Other Bodies Mercury Venus
... • Orbital period ~ 3 months • Rotational period ~ 59 days • Visible shortly after sunset or before sunrise • Highly cratered; no atmosphere ...
... • Orbital period ~ 3 months • Rotational period ~ 59 days • Visible shortly after sunset or before sunrise • Highly cratered; no atmosphere ...
planet
... planet in the solar system, but because additional objects have been discovered including Eris which is 27% more massive, the IAU reclassified Pluto and the other objects as dwarf planets. The New Horizons spacecraft was launched on January 16, 2006 and will make its closest approach to Pluto on Jul ...
... planet in the solar system, but because additional objects have been discovered including Eris which is 27% more massive, the IAU reclassified Pluto and the other objects as dwarf planets. The New Horizons spacecraft was launched on January 16, 2006 and will make its closest approach to Pluto on Jul ...
What is a planet? Why? How?
... average distance from the Sun is 2.8 The asteroid Juno was found in 1804, its average distance from the sun is 2.7 The asteroid Vesta was found in 1807, its average distance from the Sun is 2.4 ...
... average distance from the Sun is 2.8 The asteroid Juno was found in 1804, its average distance from the sun is 2.7 The asteroid Vesta was found in 1807, its average distance from the Sun is 2.4 ...
Word Pro - Smvocab
... Angular Diameter - the apparent size of celestial objects measured by angle in degrees. Apogee - that point in the orbit of the moon or a planet which is most distant from the earth. Aristotle - one of the world's greatest thinkers and scientific investigators from ancient Greece. Astronomy - one of ...
... Angular Diameter - the apparent size of celestial objects measured by angle in degrees. Apogee - that point in the orbit of the moon or a planet which is most distant from the earth. Aristotle - one of the world's greatest thinkers and scientific investigators from ancient Greece. Astronomy - one of ...
WhatsInSolarSystem - School
... 2. Has a mass big enough so that its gravity pulls it into a nearly round shape 3. Has "cleared the neighbourhood" around its orbit. Dwarf Planets As telescopes and techniques have improved astronomers have discovered more and more distant and smaller objects in our solar system. In the late 20th ce ...
... 2. Has a mass big enough so that its gravity pulls it into a nearly round shape 3. Has "cleared the neighbourhood" around its orbit. Dwarf Planets As telescopes and techniques have improved astronomers have discovered more and more distant and smaller objects in our solar system. In the late 20th ce ...
The movements of planets and other nearby objects are visible from
... motion of stars gradually change constellation patterns. ...
... motion of stars gradually change constellation patterns. ...
Parallels: Proto-Planetary Disks and rings
... snow line or ice line) rocky objects become asteroids • Far from the Sun (outside frost-line) icy objects form the comets and Kuiper Belt Objects ...
... snow line or ice line) rocky objects become asteroids • Far from the Sun (outside frost-line) icy objects form the comets and Kuiper Belt Objects ...
Astronomy Name Solar System Objects Quiz Study Guide 1. Solar
... 7. What is the Oort Cloud, and where is it? 4. Other Objects 1. Draw the tails, if any, on the comet at locations A, B and C. Include size and direction. 2. Where are the best places to find meteorites? Why there? 3. Describe at least THREE characteristics of meteorites? 4. The largest asteroid is _ ...
... 7. What is the Oort Cloud, and where is it? 4. Other Objects 1. Draw the tails, if any, on the comet at locations A, B and C. Include size and direction. 2. Where are the best places to find meteorites? Why there? 3. Describe at least THREE characteristics of meteorites? 4. The largest asteroid is _ ...
Astronomy Chapters 22-24
... (600B.C. –A.D. 150). • Aristotle concluded that earth was round because saw round shadow of earth on moon. ...
... (600B.C. –A.D. 150). • Aristotle concluded that earth was round because saw round shadow of earth on moon. ...
Definition of planet
The definition of planet, since the word was coined by the ancient Greeks, has included within its scope a wide range of celestial bodies. Greek astronomers employed the term asteres planetai (ἀστέρες πλανῆται), ""wandering stars"", for star-like objects which apparently moved over the sky. Over the millennia, the term has included a variety of different objects, from the Sun and the Moon to satellites and asteroids.By the end of the 19th century the word planet, though it had yet to be defined, had become a working term applied only to a small set of objects in the Solar System. After 1992, however, astronomers began to discover many additional objects beyond the orbit of Neptune, as well as hundreds of objects orbiting other stars. These discoveries not only increased the number of potential planets, but also expanded their variety and peculiarity. Some were nearly large enough to be stars, while others were smaller than Earth's moon. These discoveries challenged long-perceived notions of what a planet could be.The issue of a clear definition for planet came to a head in 2005 with the discovery of the trans-Neptunian object Eris, a body more massive than the smallest then-accepted planet, Pluto. In its 2006 response, the International Astronomical Union (IAU), recognised by astronomers as the world body responsible for resolving issues of nomenclature, released its decision on the matter. This definition, which applies only to the Solar System, states that a planet is a body that orbits the Sun, is massive enough for its own gravity to make it round, and has ""cleared its neighbourhood"" of smaller objects around its orbit. Under this new definition, Pluto and the other trans-Neptunian objects do not qualify as planets. The IAU's decision has not resolved all controversies, and while many scientists have accepted the definition, some in the astronomical community have rejected it outright.