Lesson Plan D2 Comets and Meteors
... causing devastation over an area of about 5000 square kilometers. Students should be encouraged to suggest ...
... causing devastation over an area of about 5000 square kilometers. Students should be encouraged to suggest ...
Theme 10.1 -- Leftovers: Comets
... Near the sun, comets form tails as we saw, and there are two points to consider about the tails of comets. Let's compare them to animal tails. As you know, when animals move, their tails are behind them. Here we see tadpoles moving to the upper left with their tails wiggling behind them. A comet, on ...
... Near the sun, comets form tails as we saw, and there are two points to consider about the tails of comets. Let's compare them to animal tails. As you know, when animals move, their tails are behind them. Here we see tadpoles moving to the upper left with their tails wiggling behind them. A comet, on ...
Comets - Sierra College Astronomy Home Page
... Pluto a planet, but Charon, Eris, and asteroid Ceres were also planets • After much debating however…. • A planet is officially defined as an object … – that is in orbit about the sun – has sufficient mass for its self gravity to overcome rigid-body forces so that it assumes [a nearly round] shape. ...
... Pluto a planet, but Charon, Eris, and asteroid Ceres were also planets • After much debating however…. • A planet is officially defined as an object … – that is in orbit about the sun – has sufficient mass for its self gravity to overcome rigid-body forces so that it assumes [a nearly round] shape. ...
The SLAM Impact Experiment: Overview and - SwRI
... and oceans, but their effects may not fully involve the crust and rarely the upper mantle. ...
... and oceans, but their effects may not fully involve the crust and rarely the upper mantle. ...
13.Asteroids - University of New Mexico
... samples of the object for return to Earth. The problems encountered Nov. 12 with the release by Japan’s Hayabusa space probe of its camera-toting robot highlight the difficulty of this kind of mission. The robot probe, called the MIcro/Nano Experimental Robot Vehicle for Asteroid (MINERVA), was lost ...
... samples of the object for return to Earth. The problems encountered Nov. 12 with the release by Japan’s Hayabusa space probe of its camera-toting robot highlight the difficulty of this kind of mission. The robot probe, called the MIcro/Nano Experimental Robot Vehicle for Asteroid (MINERVA), was lost ...
File
... It becomes visible to the naked eye every 76 years when it nears the sun. When Halley's Comet zoomed near Earth in 1986, five spacecraft flew past it and gathered unprecedented details, coming close enough to study its nucleus, which is normally concealed by the comet's coma. The roughly potato-shap ...
... It becomes visible to the naked eye every 76 years when it nears the sun. When Halley's Comet zoomed near Earth in 1986, five spacecraft flew past it and gathered unprecedented details, coming close enough to study its nucleus, which is normally concealed by the comet's coma. The roughly potato-shap ...
Lecture 10. Roche Limit / Comets
... • Before Stardust's return, cosmochemists thought of comets as vaults where the primitive ingredients of the planetary recipe had been locked up. - Their best look at the likely ingredients list came from the study of certain meteoritic particles collected in Earth's stratosphere by retired spy plan ...
... • Before Stardust's return, cosmochemists thought of comets as vaults where the primitive ingredients of the planetary recipe had been locked up. - Their best look at the likely ingredients list came from the study of certain meteoritic particles collected in Earth's stratosphere by retired spy plan ...
The Cosmic Perspective Asteroids, Comets, and Dwarf Planets
... a) It is the largest comet in the Oort cloud. b) It is the comet that was studied by the Deep Impact spacecraft, which sent an impactor into its nucleus. c) It is a comet that was seen crashing into Jupiter. d) It is the comet that hit Earth 65 million years ago leading to a mass extinction. © 2 ...
... a) It is the largest comet in the Oort cloud. b) It is the comet that was studied by the Deep Impact spacecraft, which sent an impactor into its nucleus. c) It is a comet that was seen crashing into Jupiter. d) It is the comet that hit Earth 65 million years ago leading to a mass extinction. © 2 ...
Asteroid Terms - OSIRIS
... Journey with us through the alphabet as we learn about Earth’s rocky neighbors – the asteroids! There are interesting asteroid characters in our solar system, including an asteroid that has its own moon and even one that is shaped like a dog bone! For each letter of the alphabet, we will showcase an ...
... Journey with us through the alphabet as we learn about Earth’s rocky neighbors – the asteroids! There are interesting asteroid characters in our solar system, including an asteroid that has its own moon and even one that is shaped like a dog bone! For each letter of the alphabet, we will showcase an ...
IMPACT CRATERING ON THE SMALL PLANETS CERES AND
... Floor and outer rim fractures are generally concentric to the rim. Most cut "flat-floor" material on Occator floor, suggesting fracturing after emplacement, whereas others are cut by rim debris, suggesting rapid formation. Fracturing could be due to contraction (due to either simple cooling of a mel ...
... Floor and outer rim fractures are generally concentric to the rim. Most cut "flat-floor" material on Occator floor, suggesting fracturing after emplacement, whereas others are cut by rim debris, suggesting rapid formation. Fracturing could be due to contraction (due to either simple cooling of a mel ...
Lecture14
... atmosphere is called a meteorite Hundreds fall on the Earth every year Meteorites do not come from comets First documented case in modern times was recorded in 1803 Meteorites are discovered in two ways ...
... atmosphere is called a meteorite Hundreds fall on the Earth every year Meteorites do not come from comets First documented case in modern times was recorded in 1803 Meteorites are discovered in two ways ...
Asteroids The Asteroid Belt Composition and Classification
... Nature of Meteor Showers • No shower meteor has ever reached the surface • From the flight paths, one can deduce that the particles are very light or porous • Comet dust is apparently fluffy, inconsequential ...
... Nature of Meteor Showers • No shower meteor has ever reached the surface • From the flight paths, one can deduce that the particles are very light or porous • Comet dust is apparently fluffy, inconsequential ...
Exploring Comets
... 2. Comets are composed of ices, dust and rocky debris carried from the early formation of the solar system about 4.5 billion years ago. 3. Comets are remnants from the cold, outer regions of the solar system. They are generally thought to come from two areas - the Oort Cloud and the Kuiper Belt. Bo ...
... 2. Comets are composed of ices, dust and rocky debris carried from the early formation of the solar system about 4.5 billion years ago. 3. Comets are remnants from the cold, outer regions of the solar system. They are generally thought to come from two areas - the Oort Cloud and the Kuiper Belt. Bo ...
5 Comets, Asteroids, and Meteors
... Between 1801 and 1807, astronomers discovered four small objects between the orbits of Mars and Jupiter. They named the objects Ceres, Pallas, Juno, and Vesta. Over the next 80 years, astronomers found 300 more. These rocky objects, called asteroids, are too small and too numerous to be considered f ...
... Between 1801 and 1807, astronomers discovered four small objects between the orbits of Mars and Jupiter. They named the objects Ceres, Pallas, Juno, and Vesta. Over the next 80 years, astronomers found 300 more. These rocky objects, called asteroids, are too small and too numerous to be considered f ...
Asteroids and Comets
... The Oort Cloud is a large spherical cloud with a radius from 50,000 to 100,000 A.U. surrounding the Sun filled with billions to trillions of comets. It has not been directly observed. they have orbital periods of 100,000's to millions of years. However, their orbits are so elliptical that they spend ...
... The Oort Cloud is a large spherical cloud with a radius from 50,000 to 100,000 A.U. surrounding the Sun filled with billions to trillions of comets. It has not been directly observed. they have orbital periods of 100,000's to millions of years. However, their orbits are so elliptical that they spend ...
Rocks in Space
... Troughs around Vesta’s equator are concentric with these two basins, and are large-scale fractures resulting from the impact. The largest is 22 km wide and stretches most of the way around Vesta. The impact that excavated the basins at Vesta’s south pole produced an identifiable family of meteorite ...
... Troughs around Vesta’s equator are concentric with these two basins, and are large-scale fractures resulting from the impact. The largest is 22 km wide and stretches most of the way around Vesta. The impact that excavated the basins at Vesta’s south pole produced an identifiable family of meteorite ...
COMETS - Mount Holyoke College
... and carbon-rich material of sizes from sub-micron to meters. The interior structure of a comet is not well understood, because we see only the material shed by a comet near the Sun. Indirect evidence suggests that the mean density is < 1 g/cm3 (1 g/cm3 is the density of water ice, whereas silicate r ...
... and carbon-rich material of sizes from sub-micron to meters. The interior structure of a comet is not well understood, because we see only the material shed by a comet near the Sun. Indirect evidence suggests that the mean density is < 1 g/cm3 (1 g/cm3 is the density of water ice, whereas silicate r ...
Pluto and Solar System Debris
... The impacting asteroid started to brighten up in the general direction of the Pegasus constellation, close to the East horizon where the Sun was starting to rise. The impactor belonged to the Apollo group of near-Earth asteroids. The asteroid had an approximate size of 18 metres (59 ft) and a mass o ...
... The impacting asteroid started to brighten up in the general direction of the Pegasus constellation, close to the East horizon where the Sun was starting to rise. The impactor belonged to the Apollo group of near-Earth asteroids. The asteroid had an approximate size of 18 metres (59 ft) and a mass o ...
Comets People were very superstitious in ancient times. They
... Astronomers in the 1500s and 1600s began to study comets. They found that comets are bodies in space, not part of the atmosphere. A British astronomer named Edmond Halley discovered that comets actually orbit the Sun. They return again and again, but they go so far from the Sun that their returns ta ...
... Astronomers in the 1500s and 1600s began to study comets. They found that comets are bodies in space, not part of the atmosphere. A British astronomer named Edmond Halley discovered that comets actually orbit the Sun. They return again and again, but they go so far from the Sun that their returns ta ...
Chapter 10 - Relativity Group
... • Short-period comets are now believed to be icy nuclei from the Kuiper belt – Support for this comes from the detection of over 800 small, presumably icy, bodies orbiting near and somewhat beyond Pluto – Statistical analysis indicates that the Kuiper belt may have an total mass far greater than tha ...
... • Short-period comets are now believed to be icy nuclei from the Kuiper belt – Support for this comes from the detection of over 800 small, presumably icy, bodies orbiting near and somewhat beyond Pluto – Statistical analysis indicates that the Kuiper belt may have an total mass far greater than tha ...
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... minutes or less) and from the same general direction in the sky are called meteor showers • The point in the sky from which the meteors seem to emerge is called the ...
... minutes or less) and from the same general direction in the sky are called meteor showers • The point in the sky from which the meteors seem to emerge is called the ...
Where was the biggest impact in the Solar System?
... WHEN THE FIRST Viking photos were returned from Mars in the 1970s, the Red Planet was revealed as a world of superlatives. It had the Solar System’s tallest known volcano (Olympus Mons) and the largest canyon (Valles Marineris). Now, it appears that we can add to that the largest known impact basin ...
... WHEN THE FIRST Viking photos were returned from Mars in the 1970s, the Red Planet was revealed as a world of superlatives. It had the Solar System’s tallest known volcano (Olympus Mons) and the largest canyon (Valles Marineris). Now, it appears that we can add to that the largest known impact basin ...
Asteroids
... Origin of asteroids • Most likely the force of Jupiter on the planetesimals kept them from coalescing into one object • Less likely that they had been one object and were split into many – If all of the asteroids in the asteroid belt were put together to form a planet, it would be very small, small ...
... Origin of asteroids • Most likely the force of Jupiter on the planetesimals kept them from coalescing into one object • Less likely that they had been one object and were split into many – If all of the asteroids in the asteroid belt were put together to form a planet, it would be very small, small ...
Tunguska event
The Tunguska event was a large explosion that occurred near the Stony Tunguska River, in what is now Krasnoyarsk Krai, Russia, on the morning of June 30, 1908 (N.S.). The explosion over the sparsely populated Eastern Siberian Taiga flattened 2,000 km2 (770 sq mi) of forest and caused no known casualties. The cause of the explosion is generally thought to have been a meteor. It is classified as an impact event, even though no impact crater has been found; the meteor is thought to have burst in mid-air at an altitude of 5 to 10 kilometres (3 to 6 miles) rather than hit the surface of the Earth. Different studies have yielded varying estimates of the superbolide's size, on the order of 60 to 190 metres (197 to 623 feet), depending on whether the meteor was a comet or a denser asteroid. It is considered the largest impact event on Earth in recorded history.Since the 1908 event, there have been an estimated 1,000 scholarly papers (mainly in Russian) published on the Tunguska explosion. Many scientists have participated in Tunguska studies: the best known are Leonid Kulik, Yevgeny Krinov, Kirill Florensky, Nikolai Vladimirovich Vasiliev, and Wilhelm Fast. In 2013, a team of researchers led by Victor Kvasnytsya of the National Academy of Sciences of Ukraine published analysis results of micro-samples from a peat bog near the center of the affected area showing fragments that may be of meteoritic origin.Estimates of the energy of the air burst range from 30 megatons of TNT (130 PJ) to 10 and 15 megatons of TNT (42 and 63 PJ), depending on the exact height of burst estimated when the scaling-laws from the effects of nuclear weapons are employed. While more modern supercomputer calculations that include the effect of the object's momentum estimate that the airburst had an energy range from 3 to 5 megatons of TNT (13 to 21 PJ), and that simply more of this energy was focused downward than would be the case from a nuclear explosion.Using the 15 megaton nuclear explosion derived estimate is an energy about 1,000 times greater than that of the atomic bomb dropped on Hiroshima, Japan; roughly equal to that of the United States' Castle Bravo ground-based thermonuclear test detonation on March 1, 1954; and about two-fifths that of the Soviet Union's later Tsar Bomba (the largest nuclear weapon ever detonated).It is estimated that the Tunguska explosion knocked down some 80 million trees over an area of 2,150 square kilometres (830 sq mi), and that the shock wave from the blast would have measured 5.0 on the Richter scale. An explosion of this magnitude would be capable of destroying a large metropolitan area, but due to the remoteness of the location, no fatalities were documented. This event has helped to spark discussion of asteroid impact avoidance.