Asteroids Comets and Meteoriods 2015
... comet It was discovered by Edmund Halley in 1682. Its orbital period is 76 years. The last appearance in 1986. (2062) ...
... comet It was discovered by Edmund Halley in 1682. Its orbital period is 76 years. The last appearance in 1986. (2062) ...
Ocean-like water in the Jupiter
... in six comets from the Oort cloud yielded a mean D/H ratio of (2.96 6 0.25) 3 1024. The D/H value in carbonaceous chondrites, (1.4 6 0.1) 3 1024, together with dynamical simulations, led to models in which asteroids were the main source of Earth’s water7, with #10 per cent being delivered by comets. ...
... in six comets from the Oort cloud yielded a mean D/H ratio of (2.96 6 0.25) 3 1024. The D/H value in carbonaceous chondrites, (1.4 6 0.1) 3 1024, together with dynamical simulations, led to models in which asteroids were the main source of Earth’s water7, with #10 per cent being delivered by comets. ...
The Asteroid Belt - peterboroughastronomy.com
... The first thing we should establish is the difference between an asteroid and a comet. In the very simplest terms an asteroid is a chunk of rock that orbits the Sun and is within our solar system. A comet is a giant dirty snowball that is pulled in from a very distant area called the Oort Cloud. Thi ...
... The first thing we should establish is the difference between an asteroid and a comet. In the very simplest terms an asteroid is a chunk of rock that orbits the Sun and is within our solar system. A comet is a giant dirty snowball that is pulled in from a very distant area called the Oort Cloud. Thi ...
Our Solar System
... out there. But that has been disproved. However, there is an object orbiting around the Sun in a nearly perfect circular orbit, called Quaoar. It is more than 1 billion miles past Pluto. It is 1300 km (800 miles)in diameter and definitely part of out solar system ...
... out there. But that has been disproved. However, there is an object orbiting around the Sun in a nearly perfect circular orbit, called Quaoar. It is more than 1 billion miles past Pluto. It is 1300 km (800 miles)in diameter and definitely part of out solar system ...
Study Guide
... What are Trojan Asteroids, and where are they located? (Where are the regular asteroids, for that matter?) What probes have visited Jupiter and when? Which comet crashed into Jupiter, and when? How far away from Jupiter are its four main moons? (use Jupiter’s diameter = 1) What is Jupiter’s mass com ...
... What are Trojan Asteroids, and where are they located? (Where are the regular asteroids, for that matter?) What probes have visited Jupiter and when? Which comet crashed into Jupiter, and when? How far away from Jupiter are its four main moons? (use Jupiter’s diameter = 1) What is Jupiter’s mass com ...
Introduction to Astronomy
... (a) Diagram of the Oort cloud, showing a few cometary orbits. Most Oort cloud comets never come close to the Sun. Of all the orbits shown, only the most elongated ellipse represents a comet that will actually enter the solar system (which is smaller than the dot at the center of the figure on this s ...
... (a) Diagram of the Oort cloud, showing a few cometary orbits. Most Oort cloud comets never come close to the Sun. Of all the orbits shown, only the most elongated ellipse represents a comet that will actually enter the solar system (which is smaller than the dot at the center of the figure on this s ...
Chapter 6 Lecture 4
... existence of our Moon and other “exceptions to the rules”? •Most of the exceptions probably arose from collisions or close encounters with leftover planetesimals, especially during the heavy bombardment that occurred early in the solar system’s history. Our Moon is probably the result of a giant imp ...
... existence of our Moon and other “exceptions to the rules”? •Most of the exceptions probably arose from collisions or close encounters with leftover planetesimals, especially during the heavy bombardment that occurred early in the solar system’s history. Our Moon is probably the result of a giant imp ...
Lesson 2
... where the object is farthest from the sun. There is also a point, called perihelion, where the object is closest to the sun. Today, we know that the orbits of the planets are only slightly elliptical, but the orbits of objects such as Pluto and comets are highly elliptical. Kepler found that a plane ...
... where the object is farthest from the sun. There is also a point, called perihelion, where the object is closest to the sun. Today, we know that the orbits of the planets are only slightly elliptical, but the orbits of objects such as Pluto and comets are highly elliptical. Kepler found that a plane ...
Lecture12-ASTA01
... • Since 1992, astronomers have discovered roughly a thousand small, dark, icy bodies orbiting in the outer fringes of the solar system beyond Neptune. ...
... • Since 1992, astronomers have discovered roughly a thousand small, dark, icy bodies orbiting in the outer fringes of the solar system beyond Neptune. ...
CLASSICAL KUIPER BELT OBJECTS (CKBOs)
... control over the SKBOs. On billion year timescales, perihelic perturbations by Neptune will change the orbit parameters from their present values. The SKBOs form a fat doughnut around the Classical and Resonant KBOs, extending to large distances. 1999 CF119 has an aphelion distance near 200 AU, show ...
... control over the SKBOs. On billion year timescales, perihelic perturbations by Neptune will change the orbit parameters from their present values. The SKBOs form a fat doughnut around the Classical and Resonant KBOs, extending to large distances. 1999 CF119 has an aphelion distance near 200 AU, show ...
Comets and more
... The Oort Cloud Most comets come from the Oort Cloud, a region of space far beyond the Kuiper belt, which has billions of comets. ...
... The Oort Cloud Most comets come from the Oort Cloud, a region of space far beyond the Kuiper belt, which has billions of comets. ...
Formation of the Solar System Reading Questions
... down the equation for angular momentum. If the mass of the cloud doesn’t change, and angular momentum is conserved, what happens to velocity as radius is decreased? ...
... down the equation for angular momentum. If the mass of the cloud doesn’t change, and angular momentum is conserved, what happens to velocity as radius is decreased? ...
How the Solar System Formed: The Nebular
... Collapsing Clouds of Gas and Dust A great cloud of gas and dust (called a nebula) begins to collapse. For billions of years it had be stable and drifted in space but something disturbed its equilibrium (perhaps a passing star or a blast wave of energy from a supernova explosion). The equilibrium cam ...
... Collapsing Clouds of Gas and Dust A great cloud of gas and dust (called a nebula) begins to collapse. For billions of years it had be stable and drifted in space but something disturbed its equilibrium (perhaps a passing star or a blast wave of energy from a supernova explosion). The equilibrium cam ...
time and origins power point
... Proterozoic time before 544 m.y.a. Paleozoic time from 544 - 245 m.y.a. Mesozoic time between 245 - 66 m.y.a. Cenozoic time between 66 - 2.5 m.y.a. ...
... Proterozoic time before 544 m.y.a. Paleozoic time from 544 - 245 m.y.a. Mesozoic time between 245 - 66 m.y.a. Cenozoic time between 66 - 2.5 m.y.a. ...
Instructors` Guide
... create many small pieces. Explain to the students that comets are largely made of frozen carbon dioxide (dry ice) and water. Mix these substances, and point out both of these substances are on Earth; we exhale carbon dioxide which makes up 0.04% of our atmosphere, and water is one of the primary con ...
... create many small pieces. Explain to the students that comets are largely made of frozen carbon dioxide (dry ice) and water. Mix these substances, and point out both of these substances are on Earth; we exhale carbon dioxide which makes up 0.04% of our atmosphere, and water is one of the primary con ...
1 3 Formation of the Solar System
... it formed. Some thought that Earth’s gravity trapped another object in the solar system. If this theory were correct, Earth and the moon would likely be made up of different materials. Other scientists thought the moon formed from the same material as Earth. Scientists have found that Earth and the ...
... it formed. Some thought that Earth’s gravity trapped another object in the solar system. If this theory were correct, Earth and the moon would likely be made up of different materials. Other scientists thought the moon formed from the same material as Earth. Scientists have found that Earth and the ...
Dynamics of Planetary Systems - Uppsala Astronomical Observatory
... limited time, but there is no guarantee of convergence over infinite time by carrying the series to infinite order. In fact it was shown already more than a century ago that such a procedure will in general diverge. A particular problem is posed by orbital resonances. If the so-called mean motion, o ...
... limited time, but there is no guarantee of convergence over infinite time by carrying the series to infinite order. In fact it was shown already more than a century ago that such a procedure will in general diverge. A particular problem is posed by orbital resonances. If the so-called mean motion, o ...
Solar System/Planet Formation
... particles formed from condensed rock/metal • Tiny ice crystals condensed from hydrogen compounds like water… but ONLY far from Sun due to thermal gradient EAS 4803/8803 - CP ...
... particles formed from condensed rock/metal • Tiny ice crystals condensed from hydrogen compounds like water… but ONLY far from Sun due to thermal gradient EAS 4803/8803 - CP ...
“Planet-sized” Moons sized” Moons
... What have we learned? • Orderly view of 9 planets in empty space is just plain wrong. • Small objects outnumber large objects by millions to one. • The outer solar system is crowded with a new class of objects - KBOs • Most impacts happened early in solar system history; but many are still happening ...
... What have we learned? • Orderly view of 9 planets in empty space is just plain wrong. • Small objects outnumber large objects by millions to one. • The outer solar system is crowded with a new class of objects - KBOs • Most impacts happened early in solar system history; but many are still happening ...
Solar.System
... •Cometary orbits take them far beyond Pluto •Many take up to 1 million years to orbit the Sun once! •These long period comets probably originate in the Oort cloud ...
... •Cometary orbits take them far beyond Pluto •Many take up to 1 million years to orbit the Sun once! •These long period comets probably originate in the Oort cloud ...
Some SOLAR SYSTEM notes
... rocks collided to make planets. In the case of the `gas giant' planets, Jupiter, Saturn, Uranus and Neptune, the rocky cores were massive enough to also attract some of the gas. The outer layers of these planets are made up of hydrogen and other gases. So the Sun is the collapsed core of an interste ...
... rocks collided to make planets. In the case of the `gas giant' planets, Jupiter, Saturn, Uranus and Neptune, the rocky cores were massive enough to also attract some of the gas. The outer layers of these planets are made up of hydrogen and other gases. So the Sun is the collapsed core of an interste ...
The Outer Solar System
... farther out than the Kuiper belt. The Oort Cloud is a very sparse sphere of comets thought to encircle the solar system out to a distance of about 50,000 AU. Occasionally objects from the ...
... farther out than the Kuiper belt. The Oort Cloud is a very sparse sphere of comets thought to encircle the solar system out to a distance of about 50,000 AU. Occasionally objects from the ...
Our Solar System
... A large body of small objects orbiting (the short period comets <200 years) the Sun in a radial zone extending outward from the orbit of Neptune (30 AU) to about 100 AU. Pluto maybe the biggest of the Kuiper Belt object. Oort Cloud Long Period Comets (period > 200 years) seems to come mostly from a ...
... A large body of small objects orbiting (the short period comets <200 years) the Sun in a radial zone extending outward from the orbit of Neptune (30 AU) to about 100 AU. Pluto maybe the biggest of the Kuiper Belt object. Oort Cloud Long Period Comets (period > 200 years) seems to come mostly from a ...
Black holes
... How many asteroids are there? 26 very large asteroids have been discovered, which is probably most of the big ones; but, there are still millions of smaller ones that we have yet to see because they are too tiny, only a mile or so across. If we stuck all the asteroids together, how big would the new ...
... How many asteroids are there? 26 very large asteroids have been discovered, which is probably most of the big ones; but, there are still millions of smaller ones that we have yet to see because they are too tiny, only a mile or so across. If we stuck all the asteroids together, how big would the new ...
Problem Set 3 Solutions Problem 1: D
... where Ri is the initial mass of the cloud, Rf is the radius of the Sun, and Ri Rf . About half this energy is radiated away and contributes to the luminosity, but let’s not worry about factors of order unity since we’re already making lots of approximations. The luminosity is then ...
... where Ri is the initial mass of the cloud, Rf is the radius of the Sun, and Ri Rf . About half this energy is radiated away and contributes to the luminosity, but let’s not worry about factors of order unity since we’re already making lots of approximations. The luminosity is then ...
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.