Rachel - Science A 2 Z
... http://www.enchantedlearning.com/subjects/astronomy/asteroids/composition.shtml http://www.wallpapers-free.org/49/-/Asteroid_belt_in_orbit/ ...
... http://www.enchantedlearning.com/subjects/astronomy/asteroids/composition.shtml http://www.wallpapers-free.org/49/-/Asteroid_belt_in_orbit/ ...
The Solar System (Ch. 6 in text) Consists of the sun (a typical star
... and moon rocks: 4.6 x 109 yr (about 4 or 5 billion years is good enough for memory). Remember that sec. 6.6 (Spacecraft exploration of the solar system) is for your own interest, but will not be on the next exam. The only exception is the question below. Homework problem: Why was the discovery of me ...
... and moon rocks: 4.6 x 109 yr (about 4 or 5 billion years is good enough for memory). Remember that sec. 6.6 (Spacecraft exploration of the solar system) is for your own interest, but will not be on the next exam. The only exception is the question below. Homework problem: Why was the discovery of me ...
Observational Constraints The Nebular Hypothesis
... 1. Small dust grains grow into larger—but still relatively small—asteroid-like bodies called planetesimals. 2. Planetesimals repeated crash into each other, resulting in increasingly large planetesimals. Some of these objects grow large enough to be called protoplanets. 3. As the protoplanets grow t ...
... 1. Small dust grains grow into larger—but still relatively small—asteroid-like bodies called planetesimals. 2. Planetesimals repeated crash into each other, resulting in increasingly large planetesimals. Some of these objects grow large enough to be called protoplanets. 3. As the protoplanets grow t ...
solar system debris (chapter 14)
... showers are created when the Earth enters the intersection point, such as the August Perseids produced by debris from Comet Swift Tuttle. A composite image of the nucleus of Comet Halley (right) obtained using images taken in March 1986 with the camera on board the Giotto spacecraft, from a distance ...
... showers are created when the Earth enters the intersection point, such as the August Perseids produced by debris from Comet Swift Tuttle. A composite image of the nucleus of Comet Halley (right) obtained using images taken in March 1986 with the camera on board the Giotto spacecraft, from a distance ...
Comets and astrobiology
... probe Giotto in 1986. Most comets reside in two reservoirs: i) a large (105 AUa) and spherical reservoir, the Oort cloud, with an estimated number of comets about 1011 to 1012, for a total mass of 1 to a few tens Earth mass and ii) a rather flat disk beyond Neptune orbit, the Kuiper Belt, smaller th ...
... probe Giotto in 1986. Most comets reside in two reservoirs: i) a large (105 AUa) and spherical reservoir, the Oort cloud, with an estimated number of comets about 1011 to 1012, for a total mass of 1 to a few tens Earth mass and ii) a rather flat disk beyond Neptune orbit, the Kuiper Belt, smaller th ...
XI. Astronomy: Solar-System Debris and Comets
... h. Asteroids in the inner half of the asteroid belt are light-colored, like terrestrial rocks, composed of different kinds of silicate minerals and metals. (Stony = upper left figure above). Some melted and resolidified long ago, due possibly to primordial, short-lived radioactive isotopes, or even ...
... h. Asteroids in the inner half of the asteroid belt are light-colored, like terrestrial rocks, composed of different kinds of silicate minerals and metals. (Stony = upper left figure above). Some melted and resolidified long ago, due possibly to primordial, short-lived radioactive isotopes, or even ...
(1)In bold text, Knowledge and Skill Statement
... will be given a list of satellites that have visited the outer planets. Students will research the satellites and collect images to share with the class in a power point presentation of the satellite and its importance to space exploration. ...
... will be given a list of satellites that have visited the outer planets. Students will research the satellites and collect images to share with the class in a power point presentation of the satellite and its importance to space exploration. ...
chapter8FormationSS
... 1) The Earth’s Moon has more angular momentum than most other planet moon systems. 2) The Earth’s Moon does not have a large iron-nickel core even though it is almost as big as Mercury. 3) The Earth’s Moon is depleted in volatiles, things that evaporate easily. What ever made it must have been heate ...
... 1) The Earth’s Moon has more angular momentum than most other planet moon systems. 2) The Earth’s Moon does not have a large iron-nickel core even though it is almost as big as Mercury. 3) The Earth’s Moon is depleted in volatiles, things that evaporate easily. What ever made it must have been heate ...
15_LectureOutline
... collapse, the Sun forms at the center, and dust particles act as accretion nuclei to form the planets. • Rocky planets would form close to the Sun; outer planets contain materials that would vaporize or escape at higher temperatures. • Asteroids never condensed into a larger object. ...
... collapse, the Sun forms at the center, and dust particles act as accretion nuclei to form the planets. • Rocky planets would form close to the Sun; outer planets contain materials that would vaporize or escape at higher temperatures. • Asteroids never condensed into a larger object. ...
Powerpoint
... This H–R diagram shows the evolution of stars somewhat more and somewhat less massive than the Sun. ...
... This H–R diagram shows the evolution of stars somewhat more and somewhat less massive than the Sun. ...
Comets In 2013 - WordPress.com
... planet and the whole system going around the Sun.] The majority of asteroids are found in the space between the orbits of Mars and Jupiter. Some are a little wonky and there are exceptions, but most stay in that space between the planets. But what about comets? They are far less predictable than ast ...
... planet and the whole system going around the Sun.] The majority of asteroids are found in the space between the orbits of Mars and Jupiter. Some are a little wonky and there are exceptions, but most stay in that space between the planets. But what about comets? They are far less predictable than ast ...
COMETS! - Santa Ana College
... Comets are like cats: they have tails, and they do precisely what they want. - David Levy ...
... Comets are like cats: they have tails, and they do precisely what they want. - David Levy ...
08_LectureOutlines
... formed from the gravitational collapse of a giant interstellar gas cloud—the solar nebula (Nebula is the Latin word for cloud) ...
... formed from the gravitational collapse of a giant interstellar gas cloud—the solar nebula (Nebula is the Latin word for cloud) ...
How Planets Form (990L)
... It would have been dramatic, if you could have seen it. Imagine being in an enormous, raging arena filled with gas, dust, and massive chunks of rock. There is stuff everywhere, and it's hard to see the stars. All around you, rocks are plowing silently and slowly through the gas and dust, leaving pow ...
... It would have been dramatic, if you could have seen it. Imagine being in an enormous, raging arena filled with gas, dust, and massive chunks of rock. There is stuff everywhere, and it's hard to see the stars. All around you, rocks are plowing silently and slowly through the gas and dust, leaving pow ...
our solar system?
... hypothesis over two centuries ago A large amount of evidence now supports this idea ...
... hypothesis over two centuries ago A large amount of evidence now supports this idea ...
ASTRO-114--Lecture 26-
... 100,000.” But actually, most of that 40,000 has been discovered in the last ten years. Ten or fifteen years ago I would’ve been saying, “We know about 7,000 or 8,000 asteroids.” But during the last 10 years, astronomers have made significant progress in discovering more and more asteroids. And the r ...
... 100,000.” But actually, most of that 40,000 has been discovered in the last ten years. Ten or fifteen years ago I would’ve been saying, “We know about 7,000 or 8,000 asteroids.” But during the last 10 years, astronomers have made significant progress in discovering more and more asteroids. And the r ...
21trans-neptunian7s
... Pluto is probably composed of ice and rock Spectra of Pluto reveal the presence of methane, nitrogen and carbon monoxide ice ...
... Pluto is probably composed of ice and rock Spectra of Pluto reveal the presence of methane, nitrogen and carbon monoxide ice ...
Light: The Cosmic Messenger
... 1) The Earth’s Moon has more angular momentum than most other planet moon systems. 2) The Earth’s Moon does not have a large iron-nickel core even though it is almost as big as Mercury. 3) The Earth’s Moon is depleted in volatiles, things that evaporate easily. What ever made it must have been heate ...
... 1) The Earth’s Moon has more angular momentum than most other planet moon systems. 2) The Earth’s Moon does not have a large iron-nickel core even though it is almost as big as Mercury. 3) The Earth’s Moon is depleted in volatiles, things that evaporate easily. What ever made it must have been heate ...
Powerpoint slides - Earth, Planetary, and Space Sciences
... Long-period comets • Periods > 200 yrs (most only seen once) e.g. Hale-Bopp • Source is the Oort Cloud, perturbations due to nearby stars (one star passes within 3 L.Y. every ~105 years). Such passages also randomize the inclination/eccentricity • Distances are ~104 A.U. and greater • Maybe 10-102 ...
... Long-period comets • Periods > 200 yrs (most only seen once) e.g. Hale-Bopp • Source is the Oort Cloud, perturbations due to nearby stars (one star passes within 3 L.Y. every ~105 years). Such passages also randomize the inclination/eccentricity • Distances are ~104 A.U. and greater • Maybe 10-102 ...
The Origin of Our Solar System Part 1 Survey of the solar system
... • Vredefort , Free State, South Africa, 300km diameter, 2023 millions of years old • Sudbury Ontario, Canada, 250 km diameter, 1849 million years old • Chicxulub, Yucatán, Mexico, 180 km diameter, 65 million years old • Kara, Nenetsia, Russia 120 km, 70.3 million years old. • Manicouagan, Quebec, Ca ...
... • Vredefort , Free State, South Africa, 300km diameter, 2023 millions of years old • Sudbury Ontario, Canada, 250 km diameter, 1849 million years old • Chicxulub, Yucatán, Mexico, 180 km diameter, 65 million years old • Kara, Nenetsia, Russia 120 km, 70.3 million years old. • Manicouagan, Quebec, Ca ...
Ch. 15
... collapse, the Sun forms at the center, and dust particles act as accretion nuclei to form the planets. • Rocky planets would form close to the Sun; outer planets contain materials that would vaporize or escape at higher temperatures. • Asteroids never condensed into a larger object. ...
... collapse, the Sun forms at the center, and dust particles act as accretion nuclei to form the planets. • Rocky planets would form close to the Sun; outer planets contain materials that would vaporize or escape at higher temperatures. • Asteroids never condensed into a larger object. ...
The Solar System
... The orbits of the bodies in the Solar System to scale (clockwise from top left) The principal component of the Solar System is the Sun, a main-sequence G2 star that contains 99.86 percent of the system's known mass and dominates it gravitationally.[3] The Sun's four largest orbiting bodies, the gas ...
... The orbits of the bodies in the Solar System to scale (clockwise from top left) The principal component of the Solar System is the Sun, a main-sequence G2 star that contains 99.86 percent of the system's known mass and dominates it gravitationally.[3] The Sun's four largest orbiting bodies, the gas ...
Notes
... formed from the gravitational collapse of a giant interstellar gas cloud—the solar nebula (Nebula is the Latin word for cloud) ...
... formed from the gravitational collapse of a giant interstellar gas cloud—the solar nebula (Nebula is the Latin word for cloud) ...
Star Formation
... Stars are generally found in groups, called star clusters or OB associations, depending on the type of stars. ...
... Stars are generally found in groups, called star clusters or OB associations, depending on the type of stars. ...
Workbook IAC
... they found was not a big, bright comet. It is so small that it can only be seen with a telescope. The comet Tempel-Tuttle is about two-and-a-half miles in diameter. When comets get close to the Sun, they begin to warm up and their icy material begins to melt. Tiny grains of dirt that have been ridin ...
... they found was not a big, bright comet. It is so small that it can only be seen with a telescope. The comet Tempel-Tuttle is about two-and-a-half miles in diameter. When comets get close to the Sun, they begin to warm up and their icy material begins to melt. Tiny grains of dirt that have been ridin ...
Oort cloud
The Oort cloud (/ˈɔrt/ or /ˈʊərt/) or Öpik–Oort cloud, named after Dutch astronomer Jan Oort and Estonian astronomer Ernst Öpik, is a theoretical spherical cloud of predominantly icy planetesimals believed to surround the Sun at a distance of up to around 100,000 AU (2 ly). This places it at almost half of the distance to Proxima Centauri, the nearest star to the Sun, and in interstellar space. The Kuiper belt and the scattered disc, the other two reservoirs of trans-Neptunian objects, are less than one thousandth as far from the Sun as the Oort cloud. The outer limit of the Oort cloud defines the cosmographical boundary of the Solar System and the region of the Sun's gravitational dominance.The Oort cloud is thought to comprise two regions: a spherical outer Oort cloud and a disc-shaped inner Oort cloud, or Hills cloud. Objects in the Oort cloud are largely composed of ices, such as water, ammonia, and methane.Astronomers conjecture that the matter composing the Oort cloud formed closer to the Sun and was scattered far into space by the gravitational effects of the giant planets early in the Solar System's evolution. Although no confirmed direct observations of the Oort cloud have been made, it may be the source of all long-period and Halley-type comets entering the inner Solar System, and many of the centaurs and Jupiter-family comets as well. The outer Oort cloud is only loosely bound to the Solar System, and thus is easily affected by the gravitational pull both of passing stars and of the Milky Way itself. These forces occasionally dislodge comets from their orbits within the cloud and send them towards the inner Solar System. Based on their orbits, most of the short-period comets may come from the scattered disc, but some may still have originated from the Oort cloud.