Witnesses to Local Cosmic History - Max-Planck
... far back as 1984, Wing Ip and a colleague, who were then working at the Max Planck Institute for Solar System Research, discovered that the large planets with their immense gravity must have hurled the small bits and pieces to and fro in the solar system. But even the planets themselves did not rema ...
... far back as 1984, Wing Ip and a colleague, who were then working at the Max Planck Institute for Solar System Research, discovered that the large planets with their immense gravity must have hurled the small bits and pieces to and fro in the solar system. But even the planets themselves did not rema ...
From Dust to Planets - International Space Science Institute
... large factor even assuming 100 % efficiency in collecting the matter. Second, even if there was sufficient mass available, the young 51 Peg B for example would be torn apart by the star's gravitational forces at its current location. To reconcile theory and observations different mechanisms have bee ...
... large factor even assuming 100 % efficiency in collecting the matter. Second, even if there was sufficient mass available, the young 51 Peg B for example would be torn apart by the star's gravitational forces at its current location. To reconcile theory and observations different mechanisms have bee ...
Lecture 5: Planetary system formation theories o Topics to be covered:
... Tidal induced fragmentation followed by capture o (a) The protostar approaches on a hyperbolic orbit, (b) As it collapses, it deforms into an egg shape, (c) The whole protostar is stretched into an arc shaped filament of material at perihelion, (d) As the filament leaves perihelion it straightens ...
... Tidal induced fragmentation followed by capture o (a) The protostar approaches on a hyperbolic orbit, (b) As it collapses, it deforms into an egg shape, (c) The whole protostar is stretched into an arc shaped filament of material at perihelion, (d) As the filament leaves perihelion it straightens ...
nebular theory - Marcia`s Science Teaching Ideas
... 3. Shock waves from a nearby supernova explosion 4. It also begins to flatten 5. Protosun 6. When the gravitational forces begin to fuse hydrogen into helium (fusion) 7. Protoplanets 8. Inner protoplanets - most of their lightweight gases are boiled away, Outer protoplanets - the lightweight gases d ...
... 3. Shock waves from a nearby supernova explosion 4. It also begins to flatten 5. Protosun 6. When the gravitational forces begin to fuse hydrogen into helium (fusion) 7. Protoplanets 8. Inner protoplanets - most of their lightweight gases are boiled away, Outer protoplanets - the lightweight gases d ...
26.9 news and views feature mx
... massive than the Earth, but subsequent observations showed that it is less than 5% of the mass of Mercury, the smallest of the planets known before 1800 and itself less than 6% of the mass of the Earth. This realization, together with the discovery of many minor planets beyond Neptune during the pas ...
... massive than the Earth, but subsequent observations showed that it is less than 5% of the mass of Mercury, the smallest of the planets known before 1800 and itself less than 6% of the mass of the Earth. This realization, together with the discovery of many minor planets beyond Neptune during the pas ...
Light of Distant Stars - Glasgow Science Centre
... The Transit of Venus —Jeremiah Horrocks Jeremiah Horrocks was an English astronomer who lived in the 17th century. He wrote about the first observed transit of Venus. Here is his account of the event, as taken from his book Venus in Sole Visa: When the time of the observation approached, I retired ...
... The Transit of Venus —Jeremiah Horrocks Jeremiah Horrocks was an English astronomer who lived in the 17th century. He wrote about the first observed transit of Venus. Here is his account of the event, as taken from his book Venus in Sole Visa: When the time of the observation approached, I retired ...
level 1
... Scientific Notation (km) 1.43 x 109 2.87 x 109 4.50 x 109 1.08 x 108 3.97 x 1013 7.78 x 108 1.50 x 108 5.91 x 109 5.79 x 107 2.28 x 108 5.67 x 1013 ...
... Scientific Notation (km) 1.43 x 109 2.87 x 109 4.50 x 109 1.08 x 108 3.97 x 1013 7.78 x 108 1.50 x 108 5.91 x 109 5.79 x 107 2.28 x 108 5.67 x 1013 ...
Issue #87 of Lunar and Planetary Information Bulletin
... discoveries having been announced in the press since 1995 (many discovered by the planet-searching team of Geoff Marcy and Paul Butler of San Francisco State University), it would seem that the detection of planets outside our own solar system has become a commonplace, even routine affair. Such disc ...
... discoveries having been announced in the press since 1995 (many discovered by the planet-searching team of Geoff Marcy and Paul Butler of San Francisco State University), it would seem that the detection of planets outside our own solar system has become a commonplace, even routine affair. Such disc ...
Lesson 6 Slides
... planet to orbit the Sun increases rapidly with the radius of its orbit. Thus, we find that Mercury, the innermost planet, takes only 88 days to orbit the Sun but the outermost planet (Pluto) requires 248 years to do the same. ...
... planet to orbit the Sun increases rapidly with the radius of its orbit. Thus, we find that Mercury, the innermost planet, takes only 88 days to orbit the Sun but the outermost planet (Pluto) requires 248 years to do the same. ...
E8B3_CRT_CR_MSTIPS_Final
... B. Mars has the largest active volcano in the solar system. C. Io is a volcanically active moon of Jupiter, spewing forth sulfurous lava. D. Triton is a volcanically active moon of Neptune, erupting plumes of liquid nitrogen, dust and methane. 6. When comparing moons to the planets they orbit, A. th ...
... B. Mars has the largest active volcano in the solar system. C. Io is a volcanically active moon of Jupiter, spewing forth sulfurous lava. D. Triton is a volcanically active moon of Neptune, erupting plumes of liquid nitrogen, dust and methane. 6. When comparing moons to the planets they orbit, A. th ...
Introduction - Beck-Shop
... classes of rings and ring systems were seen around all four giant planets. Some of the new discoveries have been explained, but others remain mysterious. Five comets and ten asteroids have thus far been explored close up by spacecraft (Table F.2), and there have been several missions to study the Su ...
... classes of rings and ring systems were seen around all four giant planets. Some of the new discoveries have been explained, but others remain mysterious. Five comets and ten asteroids have thus far been explored close up by spacecraft (Table F.2), and there have been several missions to study the Su ...
27.1 Notes - MrPetersenScience
... • These planets are referred to as _____ giants because they are composed mostly of __________, have low ___________, and are ________planets. Uranus and Neptune are sometimes called ice __________. ...
... • These planets are referred to as _____ giants because they are composed mostly of __________, have low ___________, and are ________planets. Uranus and Neptune are sometimes called ice __________. ...
History of the solar system
... 3. The giant planets had disks of their own so their moons orbit in their equatorial plane 4a. Because the inner solar system was hot, only rock and metal could condense which resulted in terrestrial planets 4b. The outer solar system was cold enough for ices to condense and for hydrogen gas to be c ...
... 3. The giant planets had disks of their own so their moons orbit in their equatorial plane 4a. Because the inner solar system was hot, only rock and metal could condense which resulted in terrestrial planets 4b. The outer solar system was cold enough for ices to condense and for hydrogen gas to be c ...
Document
... acceleration caused by the rotation balances the gravitational attraction of the star. In order for matter to move toward the protostar, therefore, its rotational motion must be slowed to diminish the centrifugal acceleration. This is achieved through friction. Since the inner material in the disk m ...
... acceleration caused by the rotation balances the gravitational attraction of the star. In order for matter to move toward the protostar, therefore, its rotational motion must be slowed to diminish the centrifugal acceleration. This is achieved through friction. Since the inner material in the disk m ...
AST 301 Introduction to Astronomy - University of Texas Astronomy
... How does the life story of a massive star differ? For stars up to about 8 Msun, the story is like that for the Sun. It just runs faster. For each doubling of the mass, the luminosity goes up by about 10, so fusion must be running 10 times faster, so it uses up its fuel about 5 times faster. An 8 Ms ...
... How does the life story of a massive star differ? For stars up to about 8 Msun, the story is like that for the Sun. It just runs faster. For each doubling of the mass, the luminosity goes up by about 10, so fusion must be running 10 times faster, so it uses up its fuel about 5 times faster. An 8 Ms ...
CH 27 PPT
... dioxide, methane, and ammonia. • Spend most of their time far out beyond Neptune’s orbit ** where they consist only of a solid main body called a nucleus. • Vast numbers of comets orbit in a cold region beyond Neptune called the Edgeworth-Kuiper Belt and in the much more distant ...
... dioxide, methane, and ammonia. • Spend most of their time far out beyond Neptune’s orbit ** where they consist only of a solid main body called a nucleus. • Vast numbers of comets orbit in a cold region beyond Neptune called the Edgeworth-Kuiper Belt and in the much more distant ...
1.10.1.2.SS - WordPress.com
... The two largest, Jupiter and Saturn, are composed mainly of hydrogen and helium; the two outermost planets, Uranus and Neptune, are composed largely of substances with relatively high melting points (compared with hydrogen and helium), called ices, such as water, ammonia and methane, and are often r ...
... The two largest, Jupiter and Saturn, are composed mainly of hydrogen and helium; the two outermost planets, Uranus and Neptune, are composed largely of substances with relatively high melting points (compared with hydrogen and helium), called ices, such as water, ammonia and methane, and are often r ...
Poster 49 | PDF (852 kB)
... 1Utah Valley University, 2SFSU, 3Univ. of New South Wales ABSTRACT T dwarfs are the coolest and least massive compact astrophysical objects that we can directly observe outside our Solar System. They share many properties with the expanding population of known exoplanets (almost all of which are ina ...
... 1Utah Valley University, 2SFSU, 3Univ. of New South Wales ABSTRACT T dwarfs are the coolest and least massive compact astrophysical objects that we can directly observe outside our Solar System. They share many properties with the expanding population of known exoplanets (almost all of which are ina ...
ph709-08-3b - Centre for Astrophysics and Planetary Science
... there's too little solid material in the vicinity to build protoplanet's core of 10 ME (applies to r~1 AU as well). ...
... there's too little solid material in the vicinity to build protoplanet's core of 10 ME (applies to r~1 AU as well). ...
The Planets
... The Interior of the Planets The planets are shown to scale in Figure 2. The substances that make up the planets are divided into three groups: gases, rocks, and ices. The gases—hydrogen and helium—are those with melting points near absolute zero (−273°C or 0 kelvin). The rocks are mainly ...
... The Interior of the Planets The planets are shown to scale in Figure 2. The substances that make up the planets are divided into three groups: gases, rocks, and ices. The gases—hydrogen and helium—are those with melting points near absolute zero (−273°C or 0 kelvin). The rocks are mainly ...
3rd Grade Teacher Guide - The University of Texas at Dallas
... to the class, and remind them that it is a model of the Sun, and the Sun is a star. Next, hold up a candy sprinkle and remind the class that that is our model of the Earth on the same scale. Next, hit the candy sprinkle with the star. Ask the class if they think that is what really happens. So what ...
... to the class, and remind them that it is a model of the Sun, and the Sun is a star. Next, hold up a candy sprinkle and remind the class that that is our model of the Earth on the same scale. Next, hit the candy sprinkle with the star. Ask the class if they think that is what really happens. So what ...
3rd Grade Teacher Guide - The University of Texas at Dallas
... to the class, and remind them that it is a model of the Sun, and the Sun is a star. Next, hold up a candy sprinkle and remind the class that that is our model of the Earth on the same scale. Next, hit the candy sprinkle with the star. Ask the class if they think that is what really happens. So what ...
... to the class, and remind them that it is a model of the Sun, and the Sun is a star. Next, hold up a candy sprinkle and remind the class that that is our model of the Earth on the same scale. Next, hit the candy sprinkle with the star. Ask the class if they think that is what really happens. So what ...
Dwarf planet
A dwarf planet is a planetary-mass object that is neither a planet nor a natural satellite. That is, it is in direct orbit of the Sun, and is massive enough for its shape to be in hydrostatic equilibrium under its own gravity, but has not cleared the neighborhood around its orbit.The term dwarf planet was adopted in 2006 as part of a three-way categorization of bodies orbiting the Sun, brought about by an increase in discoveries of objects farther away from the Sun than Neptune that rivaled Pluto in size, and finally precipitated by the discovery of an even more massive object, Eris. The exclusion of dwarf planets from the roster of planets by the IAU has been both praised and criticized; it was said to be the ""right decision"" by astronomer Mike Brown, who discovered Eris and other new dwarf planets, but has been rejected by Alan Stern, who had coined the term dwarf planet in 1990.The International Astronomical Union (IAU) currently recognizes five dwarf planets: Ceres, Pluto, Haumea, Makemake, and Eris. Brown criticizes this official recognition: ""A reasonable person might think that this means that there are five known objects in the solar system which fit the IAU definition of dwarf planet, but this reasonable person would be nowhere close to correct.""It is suspected that another hundred or so known objects in the Solar System are dwarf planets. Estimates are that up to 200 dwarf planets may be found when the entire region known as the Kuiper belt is explored, and that the number may exceed 10,000 when objects scattered outside the Kuiper belt are considered. Individual astronomers recognize several of these, and in August 2011 Mike Brown published a list of 390 candidate objects, ranging from ""nearly certain"" to ""possible"" dwarf planets. Brown currently identifies eleven known objects – the five accepted by the IAU plus 2007 OR10, Quaoar, Sedna, Orcus, 2002 MS4 and Salacia – as ""virtually certain"", with another dozen highly likely. Stern states that there are more than a dozen known dwarf planets.However, only two of these bodies, Ceres and Pluto, have been observed in enough detail to demonstrate that they actually fit the IAU's definition. The IAU accepted Eris as a dwarf planet because it is more massive than Pluto. They subsequently decided that unnamed trans-Neptunian objects with an absolute magnitude brighter than +1 (and hence a diameter of ≥838 km assuming a geometric albedo of ≤1) are to be named under the assumption that they are dwarf planets. The only two such objects known at the time, Makemake and Haumea, went through this naming procedure and were declared to be dwarf planets. The question of whether other likely objects are dwarf planets has never been addressed by the IAU. The classification of bodies in other planetary systems with the characteristics of dwarf planets has not been addressed.