The Cosmic Perspective Asteroids, Comets, and Dwarf Planets
... Why do some comets come from far out in space and from all different directions (i.e., not in the plane of the solar system)? a) They come from other solar systems. b) They come from nebulae in interstellar space. c) They come from a giant spherical cloud called the Oort cloud. d) They come from ...
... Why do some comets come from far out in space and from all different directions (i.e., not in the plane of the solar system)? a) They come from other solar systems. b) They come from nebulae in interstellar space. c) They come from a giant spherical cloud called the Oort cloud. d) They come from ...
Catch a Comet - Innovative Teachers BG
... - Short-period: with a period (lap time in their orbit) not more than 200 years. - long- period , with period of more than 200 years - Comets appearing once-comets whose orbits are outside the Solar System. - Comets in the main asteroid belt – it is possible that they are source of water for the inn ...
... - Short-period: with a period (lap time in their orbit) not more than 200 years. - long- period , with period of more than 200 years - Comets appearing once-comets whose orbits are outside the Solar System. - Comets in the main asteroid belt – it is possible that they are source of water for the inn ...
PPT
... • Observed data (today) are most consistent with theory that all the planets formed out of the same cloud of gas at the same time • Some of the wide variety seen within the existing planets may be due to chance events like collisions • Discovery of planet-forming disks and actual planets around othe ...
... • Observed data (today) are most consistent with theory that all the planets formed out of the same cloud of gas at the same time • Some of the wide variety seen within the existing planets may be due to chance events like collisions • Discovery of planet-forming disks and actual planets around othe ...
PowerPoint
... • Mercury, Venus, Earth, and Mars are crowded close to the Sun. • The four large planets– Jupiter, Saturn, Uranus, and Neptune– are widely spaced • Pluto tends to be in unusual space • Mostly circular orbits, except Mercury and Pluto • Orbits all lie in a plane • Size varies considerably– smallest g ...
... • Mercury, Venus, Earth, and Mars are crowded close to the Sun. • The four large planets– Jupiter, Saturn, Uranus, and Neptune– are widely spaced • Pluto tends to be in unusual space • Mostly circular orbits, except Mercury and Pluto • Orbits all lie in a plane • Size varies considerably– smallest g ...
Solar system - Wikimedia Commons
... collided to form larger bodies (planetesimals) of roughly 5 km in size; then gradually increased by further collisions at roughly 15 cm per year over the course of the next few million years.[21] The inner Solar System was too warm for volatile molecules like water and methane to condense, and so th ...
... collided to form larger bodies (planetesimals) of roughly 5 km in size; then gradually increased by further collisions at roughly 15 cm per year over the course of the next few million years.[21] The inner Solar System was too warm for volatile molecules like water and methane to condense, and so th ...
Intro to Solar System
... Periodic Comets • make regular passes near the Sun • follow Kepler’s Laws • have elliptical orbits ...
... Periodic Comets • make regular passes near the Sun • follow Kepler’s Laws • have elliptical orbits ...
Hipparcos distance estimates of the Ophiuchus and the Lupus cloud
... dark molecular clouds and their dense cores. One of the main motivations for these investigations is the study of the process of star and planet formation in its entirety, and a deeper understanding of the effects of the local environment. A key aspect of the scientific analysis of a dark molecular c ...
... dark molecular clouds and their dense cores. One of the main motivations for these investigations is the study of the process of star and planet formation in its entirety, and a deeper understanding of the effects of the local environment. A key aspect of the scientific analysis of a dark molecular c ...
here - ScienceA2Z.com
... Most are found in the Asteroid Belt, a doughnut-shaped ring which lies between the orbits of Mars and Jupiter. Astronomers have also identified a group of asteroids whose orbits cross Earth's orbit. Several thousand asteroids are known to exist in our solar system, and many are yet to be discovered. ...
... Most are found in the Asteroid Belt, a doughnut-shaped ring which lies between the orbits of Mars and Jupiter. Astronomers have also identified a group of asteroids whose orbits cross Earth's orbit. Several thousand asteroids are known to exist in our solar system, and many are yet to be discovered. ...
Asteroids, Comets & Meteors Teacher's Guide
... as they fall through Earth’s upper atmosphere. 99.9% of all meteors seen are very small rocks no larger than single grains of sand or even specks of dust. The small particles are often the remains of dust and pebbles released from comets. The 0.1% remaining meteors are often larger and burn much bri ...
... as they fall through Earth’s upper atmosphere. 99.9% of all meteors seen are very small rocks no larger than single grains of sand or even specks of dust. The small particles are often the remains of dust and pebbles released from comets. The 0.1% remaining meteors are often larger and burn much bri ...
Feb 2015 - Bluewater Astronomical Society
... mission to comet Halley for the first time determined D/H ratios in a comet. It turned out to be twice the terrestrial ratio. The conclusion at that time was that Oort cloud comets, of which Halley is a member, cannot be the responsible reservoir for our water. Several other Oort cloud comets displa ...
... mission to comet Halley for the first time determined D/H ratios in a comet. It turned out to be twice the terrestrial ratio. The conclusion at that time was that Oort cloud comets, of which Halley is a member, cannot be the responsible reservoir for our water. Several other Oort cloud comets displa ...
ASTRONOMY 1010 – End of Semester Project Building a True
... Start by facing the solar system model in the display case opposite Room 215 in Bruner Hall Commercial models, such as this, give a very misleading picture of the relative sizes and distances of objects in our solar system. To get a better feel for the true scale of the solar system, the ASTR 1010 c ...
... Start by facing the solar system model in the display case opposite Room 215 in Bruner Hall Commercial models, such as this, give a very misleading picture of the relative sizes and distances of objects in our solar system. To get a better feel for the true scale of the solar system, the ASTR 1010 c ...
Space astrometry 2: Scientific results from Hipparcos
... • Preparing for a more detailed Hyades/Pleiades investigation with Gaia: • acquire multiple-epoch radial velocities for full space motions, binary studies, membership • acquire multicolour photometry and spectroscopy for metallicity and reddening ...
... • Preparing for a more detailed Hyades/Pleiades investigation with Gaia: • acquire multiple-epoch radial velocities for full space motions, binary studies, membership • acquire multicolour photometry and spectroscopy for metallicity and reddening ...
The Origin and History of the Solar System
... If you can imagine taking all the bizarre geologic forms in the solar system and putting them on one object, you've got it in front of you. The usual response of planetary scientists to major surprises is to add complex and speculative processes to the basic Nebula model rather than to examine the ...
... If you can imagine taking all the bizarre geologic forms in the solar system and putting them on one object, you've got it in front of you. The usual response of planetary scientists to major surprises is to add complex and speculative processes to the basic Nebula model rather than to examine the ...
Sample pages 1 PDF
... of Kuiper Belt Objects or KBOs (Jewitt 2008). In coming decades, we must explore those transitional objects that could be of interest for understanding this additional source of water and organics. An example is comet 29P/Schwassmann-Wachmann 1 that is considered the archetype of comets exhibiting o ...
... of Kuiper Belt Objects or KBOs (Jewitt 2008). In coming decades, we must explore those transitional objects that could be of interest for understanding this additional source of water and organics. An example is comet 29P/Schwassmann-Wachmann 1 that is considered the archetype of comets exhibiting o ...
Nemesis - The Evergreen State College
... possible explanations to, seemingly, periodic mass extinctions in the earth’s geologic record. According to Jack Sepkoski and David Raup, there is a 26-million to 31-million year cycle of mass extinctions dating back as far as 600-million year to the Precambrian era. This research is backed by M. Da ...
... possible explanations to, seemingly, periodic mass extinctions in the earth’s geologic record. According to Jack Sepkoski and David Raup, there is a 26-million to 31-million year cycle of mass extinctions dating back as far as 600-million year to the Precambrian era. This research is backed by M. Da ...
Article PDF - IOPscience
... Neptune and other hypothetical massive planetary embryos or of its temporary capture in a resonance with one of the other planets, although these scenarios have never been quantitatively simulated. In this section we investigate the effects that an eccentric Neptune would have on the formation of th ...
... Neptune and other hypothetical massive planetary embryos or of its temporary capture in a resonance with one of the other planets, although these scenarios have never been quantitatively simulated. In this section we investigate the effects that an eccentric Neptune would have on the formation of th ...
Stellar Nebulae
... • Bok globules are very dense cores found in stellar nurseries. Typically, they contain about 10-50 solar masses worth of material in an area about a light year across. Bok globules are notable in astronomy because they contain a variety of molecules not usually found in typical sparse interstellar ...
... • Bok globules are very dense cores found in stellar nurseries. Typically, they contain about 10-50 solar masses worth of material in an area about a light year across. Bok globules are notable in astronomy because they contain a variety of molecules not usually found in typical sparse interstellar ...
The populations of comet-like bodies in the Solar system
... & Duncan 1997). Centaur orbits are typically planet-crossing and have relatively short dynamical lifetimes (∼106 yr). Chiron, which is one of a number of exceptionally large minor bodies with perihelia close to or within the orbit of Saturn, exhibits cometary activity (e.g. Luu & Jewitt 1990) and ev ...
... & Duncan 1997). Centaur orbits are typically planet-crossing and have relatively short dynamical lifetimes (∼106 yr). Chiron, which is one of a number of exceptionally large minor bodies with perihelia close to or within the orbit of Saturn, exhibits cometary activity (e.g. Luu & Jewitt 1990) and ev ...
PPT Version
... And then ‘they” arrived… • Important things happened at 2350 BC. All advanced cultures were terminated for hundreds of years, possibly changing the course of history. Religions were formed earth wide, essentially providing the preponderance of our known mythologies. The causal source was the Earth’s ...
... And then ‘they” arrived… • Important things happened at 2350 BC. All advanced cultures were terminated for hundreds of years, possibly changing the course of history. Religions were formed earth wide, essentially providing the preponderance of our known mythologies. The causal source was the Earth’s ...
how the solar system works
... are dense, weighing more than the four Gas Giants. These gas giants lie beyond Mars. These are enormous balls of gas, made from gases such as hydrogen, helium, and methane. Their centers may be made of frozen gases, and they are covered with poisoness at-mospheres. Each gas giant planet has moons, r ...
... are dense, weighing more than the four Gas Giants. These gas giants lie beyond Mars. These are enormous balls of gas, made from gases such as hydrogen, helium, and methane. Their centers may be made of frozen gases, and they are covered with poisoness at-mospheres. Each gas giant planet has moons, r ...
Project Pan-STARRS and the Outer Solar System - UCLA
... been with astrometric follow-up: objects with uncertain or peculiar orbital elements might be more likely to escape follow-up, leading to an implicit bias against such objects. Pan-STARRS will be the first survey to provide complete follow-up of every detected object. The total number of KBOs to be ...
... been with astrometric follow-up: objects with uncertain or peculiar orbital elements might be more likely to escape follow-up, leading to an implicit bias against such objects. Pan-STARRS will be the first survey to provide complete follow-up of every detected object. The total number of KBOs to be ...
UCLA 2004
... When 1 Ori C goes supernova, all the disks in the Orion Nebula will be pelted with radioactive ejecta Even more true for the disks observed in Carina Nebula, with sixty O stars [Smith et al. (2003)], many other H II regions Ejecta dust grains penetrate disk, evaporate on entry, but leave SLRs lodg ...
... When 1 Ori C goes supernova, all the disks in the Orion Nebula will be pelted with radioactive ejecta Even more true for the disks observed in Carina Nebula, with sixty O stars [Smith et al. (2003)], many other H II regions Ejecta dust grains penetrate disk, evaporate on entry, but leave SLRs lodg ...
The Astrophysical Origins of the Short
... its collapse (Cameron & Truran 1977) ... or .... Injects into already-formed protoplanetary disk... ...
... its collapse (Cameron & Truran 1977) ... or .... Injects into already-formed protoplanetary disk... ...
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.