here
... that comes from heated nucleus • Plasma tail is gas escaping from coma, pushed by solar wind • Dust tail is pushed by photons ...
... that comes from heated nucleus • Plasma tail is gas escaping from coma, pushed by solar wind • Dust tail is pushed by photons ...
Asteroids
... Asteroids outside the asteroid belt • Some have highly elliptical orbits that bring them inside the orbits of some planets – Apollo asteroids cross Earth’s orbit • There are about 300 known Earth-crossing asteroids – Amor asteroids cross Mars’ orbit – Some asteroid orbits extend beyond Pluto’s orbi ...
... Asteroids outside the asteroid belt • Some have highly elliptical orbits that bring them inside the orbits of some planets – Apollo asteroids cross Earth’s orbit • There are about 300 known Earth-crossing asteroids – Amor asteroids cross Mars’ orbit – Some asteroid orbits extend beyond Pluto’s orbi ...
Comets
... The ejected material made the comet brighter, but it dissipated after about two days • We’re waiting to hear about the composition of the comet’s surface and the material ejected by the impact • This comet has an appearance quite different from the other three comets we have examined ...
... The ejected material made the comet brighter, but it dissipated after about two days • We’re waiting to hear about the composition of the comet’s surface and the material ejected by the impact • This comet has an appearance quite different from the other three comets we have examined ...
Comets
... the nuclei of certain comets. In 1986, the European Space Agency’s Giotto probe and the Soviet Union’s Vega 1 and Vega 2 photograph the nucleus of Comet Halley 12. In 2002, NASA’s Deep Space 1 probe obtained highresolution images of the surface of Comet Borrelly 13. In 2005, NASA’s Deep Impact probe ...
... the nuclei of certain comets. In 1986, the European Space Agency’s Giotto probe and the Soviet Union’s Vega 1 and Vega 2 photograph the nucleus of Comet Halley 12. In 2002, NASA’s Deep Space 1 probe obtained highresolution images of the surface of Comet Borrelly 13. In 2005, NASA’s Deep Impact probe ...
Comets do not orbit forever.
... ice_, and _frozen gases_ such as carbon monoxide, carbon dioxide, methane and ammonia. They are often popularly described as "_dirty snowballs_", though recent observations have revealed dry dusty or rocky surfaces, suggesting that the ices are hidden beneath a crust ...
... ice_, and _frozen gases_ such as carbon monoxide, carbon dioxide, methane and ammonia. They are often popularly described as "_dirty snowballs_", though recent observations have revealed dry dusty or rocky surfaces, suggesting that the ices are hidden beneath a crust ...
The Kuiper Belt, and the Early Evolution of the Outer Solar System
... a r ∼ 105 km cloud – solar wind & radiation sweeps gas & dust into tail ` ∼ 106 to 7 km – all this from a comet nucleus with diameter 1–10 km • most comets reside at r > 2 AU, where they are inactive, so they are dark and unseen... Comet Hale Bopp ...
... a r ∼ 105 km cloud – solar wind & radiation sweeps gas & dust into tail ` ∼ 106 to 7 km – all this from a comet nucleus with diameter 1–10 km • most comets reside at r > 2 AU, where they are inactive, so they are dark and unseen... Comet Hale Bopp ...
COMETS! - Santa Ana College
... of gravity, act like giant vacuum cleaners and can pull in comets that travel through the inner solar system. However, a giant comet or maybe an asteroid struck the Earth 65 million years ago, and may be responsible for the death of the dinosaurs. Other comets have also struck the Earth. If a comet ...
... of gravity, act like giant vacuum cleaners and can pull in comets that travel through the inner solar system. However, a giant comet or maybe an asteroid struck the Earth 65 million years ago, and may be responsible for the death of the dinosaurs. Other comets have also struck the Earth. If a comet ...
Asteroids and Comets
... because they are too faint to be seen directly and because their stable orbits do not bring them closer to the Sun The total number of comets within the sphere of influence of our Sun could therefore be on the order of ten trillion (1013)! Their total mass would be similar to that of 1000 Earths Com ...
... because they are too faint to be seen directly and because their stable orbits do not bring them closer to the Sun The total number of comets within the sphere of influence of our Sun could therefore be on the order of ten trillion (1013)! Their total mass would be similar to that of 1000 Earths Com ...
Objects in the Kuiper belt are made mostly of rock and
... c) Triton, which must once have orbited the Sun before being captured by Neptune, is significantly larger than Pluto. d) Pluto's composition appears to match that of other known Kuiper belt comets. e) Pluto grows a coma and a long tail when it is at the point in its orbit closest to the Sun. ...
... c) Triton, which must once have orbited the Sun before being captured by Neptune, is significantly larger than Pluto. d) Pluto's composition appears to match that of other known Kuiper belt comets. e) Pluto grows a coma and a long tail when it is at the point in its orbit closest to the Sun. ...
Make a Comet Motion Flip Book
... blows away from the Sun, causes the tail to always point away from the Sun in the same way that smoke from a smoke stack moves away from the direction of the wind. • Notice when you flip the book that the comet moves slowly in its orbit when it is far from the Sun and quickly when it is near to the ...
... blows away from the Sun, causes the tail to always point away from the Sun in the same way that smoke from a smoke stack moves away from the direction of the wind. • Notice when you flip the book that the comet moves slowly in its orbit when it is far from the Sun and quickly when it is near to the ...
lecture 3
... eccentricity growth and eventual escape or collision with Sun • at high eccentricity the evolution can be modeled as a diffusion process ( gambler s ruin with bankruptcy = ...
... eccentricity growth and eventual escape or collision with Sun • at high eccentricity the evolution can be modeled as a diffusion process ( gambler s ruin with bankruptcy = ...
Comets vs. Asteroids
... Surface is solid and stable, showing craters where other objects have crashed into it. Surface does not vaporize. Orbit is stable and circular. Have left craters on Earth, and may have caused mass extinctions, such as of the dinosaurs. Part of Solar System, leftovers from its formation. Orbits the S ...
... Surface is solid and stable, showing craters where other objects have crashed into it. Surface does not vaporize. Orbit is stable and circular. Have left craters on Earth, and may have caused mass extinctions, such as of the dinosaurs. Part of Solar System, leftovers from its formation. Orbits the S ...
CI513 Instruction and Technology Lesson Planning Guide
... planet’s gravity captures the meteroid and pulles it toward the planet’s surface. As the friction increases, the meteroid heats up and begins to burn and glow. Now it is called a meteor, or a shooting star. Any part of the metor that does not burn up completely in the atmosphere and eventually hits ...
... planet’s gravity captures the meteroid and pulles it toward the planet’s surface. As the friction increases, the meteroid heats up and begins to burn and glow. Now it is called a meteor, or a shooting star. Any part of the metor that does not burn up completely in the atmosphere and eventually hits ...
13DwarfPlanetMeteorComet_RJ
... Most have very elliptical orbits Short period comets generally orbit in the plane of the solar system Long period comets orbit from all directions Suggests two “hideouts” or origins ...
... Most have very elliptical orbits Short period comets generally orbit in the plane of the solar system Long period comets orbit from all directions Suggests two “hideouts” or origins ...
Chapter 12 Asteroids, Comets, and Dwarf Planets What are
... that comes from heated nucleus • Plasma tail is gas escaping from coma, pushed by solar wind • Dust tail is pushed by photons ...
... that comes from heated nucleus • Plasma tail is gas escaping from coma, pushed by solar wind • Dust tail is pushed by photons ...
Asteroids and Comets - Wayne State University
... Origin and Evolution of Comets Comets originate from very great distances The aphelia of new comets are typically around 50,000 AU This clustering of aphelia was first noted by Dutch astronomer Jan Oort in 1950 He then proposed an idea for the origin of those comets, which is still accepted by most ...
... Origin and Evolution of Comets Comets originate from very great distances The aphelia of new comets are typically around 50,000 AU This clustering of aphelia was first noted by Dutch astronomer Jan Oort in 1950 He then proposed an idea for the origin of those comets, which is still accepted by most ...
Asteroids and Comets
... planetesimals, then were tossed into the Oort cloud by those planets The shape of the Oort cloud is determined from observations of comet orbits Some comet orbits seem to come from a flatter, less remote region – the Kuiper belt, which extends from Neptune’s orbit out to some unknown distance – ...
... planetesimals, then were tossed into the Oort cloud by those planets The shape of the Oort cloud is determined from observations of comet orbits Some comet orbits seem to come from a flatter, less remote region – the Kuiper belt, which extends from Neptune’s orbit out to some unknown distance – ...
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 ...
Chapter 12 (in pdf)
... A. There was no rocky material beyond Jupiter s orbit. B. The heaviest rocks sank towards the center of the solar system. C. Ice could form in the outer solar system. D. A passing star probably stripped away all of those asteroids, even if they were there at one time. ...
... A. There was no rocky material beyond Jupiter s orbit. B. The heaviest rocks sank towards the center of the solar system. C. Ice could form in the outer solar system. D. A passing star probably stripped away all of those asteroids, even if they were there at one time. ...
Filled In Notepacket For Unit
... sky. The Earth passes through the orbits of various comets each year. Each year we have the same meteor showers. Meteor showers are named after the constellation they appear to come from. ...
... sky. The Earth passes through the orbits of various comets each year. Each year we have the same meteor showers. Meteor showers are named after the constellation they appear to come from. ...
Remnants of Rock and Ice (Chapter 12) Asteroids (small rocky
... Mars and Jupiter. Orbital resonances with Jupiter have ejected any asteroids with periods that are simple fractions of Jupiter’s period. Jupiter is responsible for the objects in the Asteroid Belt not accreting into a planet and for the total mass in the Asteroid Belt being so low. Asteroids from th ...
... Mars and Jupiter. Orbital resonances with Jupiter have ejected any asteroids with periods that are simple fractions of Jupiter’s period. Jupiter is responsible for the objects in the Asteroid Belt not accreting into a planet and for the total mass in the Asteroid Belt being so low. Asteroids from th ...
Lesson Plan D2 Comets and Meteors
... composition of a real comet nucleus. After making the model comet nucleus, students will use the Starry Night computer exercise to “hitch a virtual ride” on a comet as it orbits the Sun. ...
... composition of a real comet nucleus. After making the model comet nucleus, students will use the Starry Night computer exercise to “hitch a virtual ride” on a comet as it orbits the Sun. ...
Week 6 - Asteroids, Comets, and Meteors
... are discovered. Many of these comets are short-period comets. This means they take less than 200 years to orbit the sun. Others are long-period comets which can take as long as 30 million years to orbit the sun. The center of a comet is called the nucleus. The nucleus is usually only a few miles wid ...
... are discovered. Many of these comets are short-period comets. This means they take less than 200 years to orbit the sun. Others are long-period comets which can take as long as 30 million years to orbit the sun. The center of a comet is called the nucleus. The nucleus is usually only a few miles wid ...
Comet
A comet is an icy small Solar System body that, when passing close to the Sun, heats up and begins to outgas, displaying a visible atmosphere or coma, and sometimes also a tail. These phenomena are due to the effects of solar radiation and the solar wind upon the nucleus of the comet. Comet nuclei range from a few hundred metres to tens of kilometres across and are composed of loose collections of ice, dust, and small rocky particles. The coma and tail are much larger and, if sufficiently bright, may be seen from the Earth without the aid of a telescope. Comets have been observed and recorded since ancient times by many cultures.Comets have a wide range of orbital periods, ranging from several years to potentially several millions of years. Short-period comets originate in the Kuiper belt or its associated scattered disc, which lie beyond the orbit of Neptune. Long-period comets are thought to originate in the Oort cloud, a spherical cloud of icy bodies extending from outside the Kuiper belt to halfway to the next nearest star. Long-period comets are directed towards the Sun from the Oort cloud by gravitational perturbations caused by passing stars and the galactic tide. Hyperbolic comets may pass once through the inner Solar System before being flung out to interstellar space.Comets are distinguished from asteroids by the presence of an extended, gravitationally unbound atmosphere surrounding their central nucleus. This atmosphere has parts termed the coma (the central part immediately surrounding the nucleus) and the tail (a typically linear section consisting of dust or gas blown out from the coma by the Sun's light pressure or outstreaming solar wind plasma). However, extinct comets that have passed close to the Sun many times have lost nearly all of their volatile ices and dust and may come to resemble small asteroids. Asteroids are thought to have a different origin from comets, having formed inside the orbit of Jupiter rather than in the outer Solar System. The discovery of main-belt comets and active centaurs has blurred the distinction between asteroids and comets.As of November 2014 there are 5,253 known comets, a number that is steadily increasing. However, this represents only a tiny fraction of the total potential comet population, as the reservoir of comet-like bodies in the outer Solar System (in the Oort cloud) is estimated to be one trillion. Roughly one comet per year is visible to the naked eye, though many of these are faint and unspectacular. Particularly bright examples are called ""Great Comets"". Comets have been visited by unmanned probes such as the European Space Agency's Rosetta, which became the first ever to land a robotic spacecraft on a comet, and NASA's Deep Impact, which blasted a crater on Comet Tempel 1 to study its interior.