E1 Introduction to the Universe NEW
... Comets • Giant dirty snow balls (ice and dust) (diameter 100m - 50 km?) • Very elliptical orbits • Short period (T < 200 yrs) and long period (could be thousands of years) • Oort cloud • Tail(s) always point away from the sun • Evaporate as they get closer to the sun ...
... Comets • Giant dirty snow balls (ice and dust) (diameter 100m - 50 km?) • Very elliptical orbits • Short period (T < 200 yrs) and long period (could be thousands of years) • Oort cloud • Tail(s) always point away from the sun • Evaporate as they get closer to the sun ...
Lec22_2D
... Ganymede has been thermally stressed in the past, either by heat from Jupiter’s gravitational contraction, or by tides. The grooves in its surface are probably due to ice expansion and contraction. It is now tidally locked. Callisto is far enough away from Jupiter to be thermally unaffected. It ...
... Ganymede has been thermally stressed in the past, either by heat from Jupiter’s gravitational contraction, or by tides. The grooves in its surface are probably due to ice expansion and contraction. It is now tidally locked. Callisto is far enough away from Jupiter to be thermally unaffected. It ...
Merit - NZQA
... EACH of the following properties: • temperature • spectral class • luminosity • fuel source • surface area • mass. ...
... EACH of the following properties: • temperature • spectral class • luminosity • fuel source • surface area • mass. ...
WhatsInSolarSystem - School
... Comets are objects which display a coma, a fuzzy atmosphere, when they are close to the Sun. They are balls of dust, rock and ice. Centaurs These objects which have crossed the orbits of one or more of the giant planets. As centaurs in mythology were half man and half horse these objects behave like ...
... Comets are objects which display a coma, a fuzzy atmosphere, when they are close to the Sun. They are balls of dust, rock and ice. Centaurs These objects which have crossed the orbits of one or more of the giant planets. As centaurs in mythology were half man and half horse these objects behave like ...
C12 : The Solar System
... • Smallest planet in solar system • Orbit round the Sun → 248 years • Different from other outer planets: - thin atm - solid, icy rock surface • 1 moon : Charon (half the size of pluto) ...
... • Smallest planet in solar system • Orbit round the Sun → 248 years • Different from other outer planets: - thin atm - solid, icy rock surface • 1 moon : Charon (half the size of pluto) ...
Slide 1
... Comets • Giant dirty snow balls (ice and dust) (diameter 100m - 50 km?) • Very elliptical orbits • Short period (T < 200 yrs) and long period (could be thousands of years) • Oort cloud • Tail(s) always point away from the sun • Evaporate as they get closer to the sun ...
... Comets • Giant dirty snow balls (ice and dust) (diameter 100m - 50 km?) • Very elliptical orbits • Short period (T < 200 yrs) and long period (could be thousands of years) • Oort cloud • Tail(s) always point away from the sun • Evaporate as they get closer to the sun ...
File
... gas from the ices and dust that is mixed in with the ice. They escape as the comet melts. The tail always points away from the sun due to the solar winds (movement of heat away from sun) ...
... gas from the ices and dust that is mixed in with the ice. They escape as the comet melts. The tail always points away from the sun due to the solar winds (movement of heat away from sun) ...
Eight billion asteroids in the Oort cloud
... objects with aphelion Q > 104 au became comets, rather than modelling the effects of the Galactic tide and passing stars. Scaling the 3.3-5.2 au result down to 1 au, Weissman & Levison (1997) estimated 2.3% of the Oort cloud to have come from the region interior to Jupiter’s orbit. Followup observat ...
... objects with aphelion Q > 104 au became comets, rather than modelling the effects of the Galactic tide and passing stars. Scaling the 3.3-5.2 au result down to 1 au, Weissman & Levison (1997) estimated 2.3% of the Oort cloud to have come from the region interior to Jupiter’s orbit. Followup observat ...
mass extinction kalei and shae
... Comets have a wide range of orbital periods, ranging from a few years to hundreds of thousands of years. Short-period comets originate in the Kuiper belt, or its associated scattered disc,[1] which lie beyond the orbit of Neptune Comet nuclei are known to range from about 100 meters to more than 40 ...
... Comets have a wide range of orbital periods, ranging from a few years to hundreds of thousands of years. Short-period comets originate in the Kuiper belt, or its associated scattered disc,[1] which lie beyond the orbit of Neptune Comet nuclei are known to range from about 100 meters to more than 40 ...
Asteroids, Comets and Meteorites What is an Asteroid? Asteroids
... Asteroid belt is between Mars and Jupiter Kirkwood gaps in the asteroid belt are caused by Jupiter’s periodic influence Most asteroids orbit close to the ecliptic Apollo asteroids (about 50 with diameters greater ...
... Asteroid belt is between Mars and Jupiter Kirkwood gaps in the asteroid belt are caused by Jupiter’s periodic influence Most asteroids orbit close to the ecliptic Apollo asteroids (about 50 with diameters greater ...
Wednesday, October 24, 2007
... • Pluto is 2nd largest object known in Kuiper Belt; largest is called Eris • Circular or somewhat elliptical orbits ...
... • Pluto is 2nd largest object known in Kuiper Belt; largest is called Eris • Circular or somewhat elliptical orbits ...
Topic 2 Key Facts - AstronomyGCSE.co.uk
... Saturn – another gas giant. Quite squashed due to its high rotational speed. Saturn has a distinctive ring system about 1 km thick made up of particles from 1cm to 1m in size. There are 3 main regions, A and B separated by the Cassini Division then C. Uranus – spins on a very tilted axis so its sout ...
... Saturn – another gas giant. Quite squashed due to its high rotational speed. Saturn has a distinctive ring system about 1 km thick made up of particles from 1cm to 1m in size. There are 3 main regions, A and B separated by the Cassini Division then C. Uranus – spins on a very tilted axis so its sout ...
Chapter 10
... region between the orbits of Mars and Jupiter • The first asteroid (Ceres) of this asteroid belt swarm was discovered as a result of a search for the “missing planet” of Bode’s law • The combined mass of all the asteroids is probably less than 1/1000 the mass of the Earth ...
... region between the orbits of Mars and Jupiter • The first asteroid (Ceres) of this asteroid belt swarm was discovered as a result of a search for the “missing planet” of Bode’s law • The combined mass of all the asteroids is probably less than 1/1000 the mass of the Earth ...
HERE
... 11. Sun contains 99.8% of Solar System mass 12. 98% of angular momentum resides in planet orbits 13. planet types/compositions depend on location (beware Moon) 14. planetary atmospheres contain ice fractions dependent on temp 15. all planets, large moons/asteroids differentiated (were warm) 16. rapi ...
... 11. Sun contains 99.8% of Solar System mass 12. 98% of angular momentum resides in planet orbits 13. planet types/compositions depend on location (beware Moon) 14. planetary atmospheres contain ice fractions dependent on temp 15. all planets, large moons/asteroids differentiated (were warm) 16. rapi ...
Beyond Pluto - Assets - Cambridge University Press
... in Flagstaff during January 1929 and was set the task of taking photographs which could be searched for Lowell’s Planet X. It took a while to get the new 31 cm telescope, built especially for the search, into full operation, but by April all was ready. Tombaugh took a number of photographic plates c ...
... in Flagstaff during January 1929 and was set the task of taking photographs which could be searched for Lowell’s Planet X. It took a while to get the new 31 cm telescope, built especially for the search, into full operation, but by April all was ready. Tombaugh took a number of photographic plates c ...
Discovery of the Kuiper Belt
... from the speed, and then estimated the size from the brightness and the distance. We also calculated the number of similar objects to be found if we could continue our survey over the whole sky in the plane of the solar system. By the end of the night, we knew that we had found a solar system object ...
... from the speed, and then estimated the size from the brightness and the distance. We also calculated the number of similar objects to be found if we could continue our survey over the whole sky in the plane of the solar system. By the end of the night, we knew that we had found a solar system object ...
astr221lect4
... • Giant volcanoes, a huge canyon, polar caps, more • Water flowed in distant past; could there have been life? ...
... • Giant volcanoes, a huge canyon, polar caps, more • Water flowed in distant past; could there have been life? ...
Asteroids Comets Meteor Showers
... • Perhaps a planet was going to form there, but Jupiter’s pull disrupted orbits of planetesimals, ejecting some completely, preventing formation of planet. Asteroids are leftovers. • Supported by simulations. If no Jupiter, an Earth-like planet likely to form. With Jupiter, orbits are disrupted. ...
... • Perhaps a planet was going to form there, but Jupiter’s pull disrupted orbits of planetesimals, ejecting some completely, preventing formation of planet. Asteroids are leftovers. • Supported by simulations. If no Jupiter, an Earth-like planet likely to form. With Jupiter, orbits are disrupted. ...
CEEES/SC 10110/20110 Planet Earth Our Place in the Universe
... The Solar System The Asteroid Belt = failed planet (Jupiter’s gravity was too strong for a planet to form). Asteroids = rocky or metallic objects. Comets = icy objects from two sources: 1) Kuiper Belt – extends from a little past Neptune’s orbit to a little past Pluto’s orbit. Pluto is ~ 4 billion ...
... The Solar System The Asteroid Belt = failed planet (Jupiter’s gravity was too strong for a planet to form). Asteroids = rocky or metallic objects. Comets = icy objects from two sources: 1) Kuiper Belt – extends from a little past Neptune’s orbit to a little past Pluto’s orbit. Pluto is ~ 4 billion ...
Comets - from the Greek kome, meaning “hair”. Only visible when far
... to orbit the Sun. A “short” period comet is a comet with an orbit less than 200 years. ...
... to orbit the Sun. A “short” period comet is a comet with an orbit less than 200 years. ...
Inner Solar System Material Discovered in the Oort Cloud
... There are now several dynamical models that can reproduce much of our solar system's current architecture. The “Grand Tack” model (1) starts the solar system formation simulation at an ...
... There are now several dynamical models that can reproduce much of our solar system's current architecture. The “Grand Tack” model (1) starts the solar system formation simulation at an ...
Lecture 2—Formation of the Earth and Moon
... Early stages of planet formation • Dust settles to the midplane of the solar nebula • The dust orbits slightly faster than the gas because it doesn’t feel the effects of pressure • Gas drag causes some of the dust to spiral inwards • Turbulence is generated, lifting some of the dust out of the midp ...
... Early stages of planet formation • Dust settles to the midplane of the solar nebula • The dust orbits slightly faster than the gas because it doesn’t feel the effects of pressure • Gas drag causes some of the dust to spiral inwards • Turbulence is generated, lifting some of the dust out of the midp ...
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.