
Lecture 5: Planetary system formation theories o Topics to be covered:
... 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 up, (e) The filament fragments to produce several ...
... 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 up, (e) The filament fragments to produce several ...
Formation of the Solar System
... the collapsing cloud, the outer, cooler regions of the cloud swirl around the central protostar in a disk-like structure called the solar nebula. An advanced theory, called the condensation theory, includes the nebular theory but also incorporates interstellar dust as an essential ingredient in the ...
... the collapsing cloud, the outer, cooler regions of the cloud swirl around the central protostar in a disk-like structure called the solar nebula. An advanced theory, called the condensation theory, includes the nebular theory but also incorporates interstellar dust as an essential ingredient in the ...
Comparative Planetology
... * The study of the similarities and dissimilarities of the constituents of the solar system. * Provides a basis for understanding how the solar system might have formed and how it evolved. ...
... * The study of the similarities and dissimilarities of the constituents of the solar system. * Provides a basis for understanding how the solar system might have formed and how it evolved. ...
Seasons
... Great Pyramid and Thuban, the closest star to the rotational axis of the earth in 4420 B.C. • Betelguese, which marked the Vernal Equinox is also aligned with the southern shaft in the King’s chamber. • And others… ...
... Great Pyramid and Thuban, the closest star to the rotational axis of the earth in 4420 B.C. • Betelguese, which marked the Vernal Equinox is also aligned with the southern shaft in the King’s chamber. • And others… ...
Your Star: _____________________ d = 1 / p
... Write down your star's apparent brightness. Round it to one significant digit. ...
... Write down your star's apparent brightness. Round it to one significant digit. ...
Twinkle, twinkle little star, how I wonder what you are. Up
... I’m Mercury, I’m Mercury, the closest to the sun. I’m Mercury, I’m Mercury, the closest to the sun. Venus (spoken) I’m Venus, shining so bright. I’m Venus, shining so bright. Earth (spoken) For what it’s worth (snap snap) I’m the Earth. (snap snap) For what it’s worth (snap snap) I’m the Earth. (sna ...
... I’m Mercury, I’m Mercury, the closest to the sun. I’m Mercury, I’m Mercury, the closest to the sun. Venus (spoken) I’m Venus, shining so bright. I’m Venus, shining so bright. Earth (spoken) For what it’s worth (snap snap) I’m the Earth. (snap snap) For what it’s worth (snap snap) I’m the Earth. (sna ...
Here - ScienceA2Z.com
... diameter; then 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. The inner Solar System was too warm for volatile molecules like water and methane to condense ...
... diameter; then 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. The inner Solar System was too warm for volatile molecules like water and methane to condense ...
Planets - burnsburdick11
... • Venus is the second closest orbit from the sun. It orbits once every 222 earth days. This planet is named after Venus the roman goddess, of love and beauty. Venus is the second brightest natural object in space, apart from the moon. Venus' diameter is about 7,520 miles! Its has a iron core, and a ...
... • Venus is the second closest orbit from the sun. It orbits once every 222 earth days. This planet is named after Venus the roman goddess, of love and beauty. Venus is the second brightest natural object in space, apart from the moon. Venus' diameter is about 7,520 miles! Its has a iron core, and a ...
Station 1 - Fall River Public Schools
... the most important characteristics. What Are the Defining Characteristics of Mercury? Mercury is the smallest planet. It has no moons. As the closest planet to the sun, Mercury also has the shortest period of revolution. Mercury completes its orbit in 88 Earth days. Mercury is so close to the sun th ...
... the most important characteristics. What Are the Defining Characteristics of Mercury? Mercury is the smallest planet. It has no moons. As the closest planet to the sun, Mercury also has the shortest period of revolution. Mercury completes its orbit in 88 Earth days. Mercury is so close to the sun th ...
Space - Great Barr Academy
... It looks huge, but the Sun is a very small Mercury is very small, star in comparison to about half the size of the others. Earth ...
... It looks huge, but the Sun is a very small Mercury is very small, star in comparison to about half the size of the others. Earth ...
Perspectives of the Earth, Moon and Sun
... 3. Students know that our solar system consists of one star, eight planets and numerous other smaller objects. (10 mins) The view zooms into our solar system, showing the eight planets, the Sun and the asteroid belt in between the terrestrial planets and the gas giants. Students consider what the Ea ...
... 3. Students know that our solar system consists of one star, eight planets and numerous other smaller objects. (10 mins) The view zooms into our solar system, showing the eight planets, the Sun and the asteroid belt in between the terrestrial planets and the gas giants. Students consider what the Ea ...
J S U N I L T U... 2011 “Chase Excellence- Success Will Follow” ll Follow”
... to move from East to West. With reference to the Earth, the Pole star does not appear to move in the sky because it is located above the axis of rotation of the Earth in the north direction. It appears to remain stationary at a point in the sky. 13. Why is the distance between stars expressed in lig ...
... to move from East to West. With reference to the Earth, the Pole star does not appear to move in the sky because it is located above the axis of rotation of the Earth in the north direction. It appears to remain stationary at a point in the sky. 13. Why is the distance between stars expressed in lig ...
Searching for planets around evolved stars with COROT
... now looking for planets with sub-Jovian masses. We present here an analysis about the possibility of using COROT also to search planets around evolved stars. The main goal of this project is the search for planetary systems orbiting solar-type evolved stars, namely stars with solar metallicity and m ...
... now looking for planets with sub-Jovian masses. We present here an analysis about the possibility of using COROT also to search planets around evolved stars. The main goal of this project is the search for planetary systems orbiting solar-type evolved stars, namely stars with solar metallicity and m ...
Astronomy in Ancient Cultures
... These are the things ancient cultures could observe, without the aid of technology! (The Sun, Mercury, Venus, Mars, Jupiter, Saturn, Meteors, Comets, and Stars.) Astronomy is the oldest science. There is evidence of crude astronomy even in prehistoric times. Early astronomy was about observing the m ...
... These are the things ancient cultures could observe, without the aid of technology! (The Sun, Mercury, Venus, Mars, Jupiter, Saturn, Meteors, Comets, and Stars.) Astronomy is the oldest science. There is evidence of crude astronomy even in prehistoric times. Early astronomy was about observing the m ...
PART 1 OBJECTS IN THE SOLAR SYSTEM 4.1 INTRODUCTION
... During the formation of the solar system when there were more objects that had not yet become parts of planetary systems many collisions occurred. A large object colliding with Earth is thought to have been what formed Earth’s Moon. A collision is also though to be the reason that the rotational axi ...
... During the formation of the solar system when there were more objects that had not yet become parts of planetary systems many collisions occurred. A large object colliding with Earth is thought to have been what formed Earth’s Moon. A collision is also though to be the reason that the rotational axi ...
the rest of the univ..
... planets in such a way as to cause the object to cross the orbit of Neptune. It will then very likely have a close encounter with Neptune sending it out of the solar system or into an orbit crossing those of the other giant planets or even into the inner solar system. There are presently nine known o ...
... planets in such a way as to cause the object to cross the orbit of Neptune. It will then very likely have a close encounter with Neptune sending it out of the solar system or into an orbit crossing those of the other giant planets or even into the inner solar system. There are presently nine known o ...
IN THE CENTRE OF THE SUN IT ABOUT 15 MILLION DEGREES
... of Venus is covered by lava flows. There are several large shield volcanoes (similar to Hawaii or Olympus Mons). • Recently announced findings indicate that Venus is still volcanically active, but only in a few hot spots; for the most part it has been geologically rather quiet for the past few hundr ...
... of Venus is covered by lava flows. There are several large shield volcanoes (similar to Hawaii or Olympus Mons). • Recently announced findings indicate that Venus is still volcanically active, but only in a few hot spots; for the most part it has been geologically rather quiet for the past few hundr ...
Week 20 Satellites and Probes
... Studies in the Jovian system included analysis of the Great Red Spot (found to be a massive, rotating storm) and the (as yet unexplained in full) peculiar surface of the moon Europa. In its Saturn encounter, the spacecraft probed the atmosphere of the giant with radio waves and found the internal te ...
... Studies in the Jovian system included analysis of the Great Red Spot (found to be a massive, rotating storm) and the (as yet unexplained in full) peculiar surface of the moon Europa. In its Saturn encounter, the spacecraft probed the atmosphere of the giant with radio waves and found the internal te ...
©JSR 2010 Seeing gravity 1/2 Gravitation – if the Earth could see
... It’s tempting to write off all distant objects except the combined effect of all the other stars towards the galactic centre as having no effect at all on the Earth. Yet because of the huge mass of stars, even a pretty distant star does exert a force on the Earth that is quite a sensible number of N ...
... It’s tempting to write off all distant objects except the combined effect of all the other stars towards the galactic centre as having no effect at all on the Earth. Yet because of the huge mass of stars, even a pretty distant star does exert a force on the Earth that is quite a sensible number of N ...
1 3 Formation of the Solar System
... Earth about 65 million yeas ago and caused the dinosaurs to become extinct. The impact may have released an amount of energy equal to that of 10 million hydrogen bombs. The impact would have thrown large amounts of dust into the atmosphere. The dust would have made the sky dark. Without enough light ...
... Earth about 65 million yeas ago and caused the dinosaurs to become extinct. The impact may have released an amount of energy equal to that of 10 million hydrogen bombs. The impact would have thrown large amounts of dust into the atmosphere. The dust would have made the sky dark. Without enough light ...
Question Title
... Comments Answer: B Justification: If the Sun was a first generation star, then the only elements present in our solar system would be hydrogen and helium. We know that the Sun is not a first generation star because we interact with heavier elements – such as carbon, nitrogen, oxygen, and sulphur – e ...
... Comments Answer: B Justification: If the Sun was a first generation star, then the only elements present in our solar system would be hydrogen and helium. We know that the Sun is not a first generation star because we interact with heavier elements – such as carbon, nitrogen, oxygen, and sulphur – e ...
Physical Sciences Astronomy: The Formation of The Solar System
... Comments Answer: B Justification: If the Sun was a first generation star, then the only elements present in our solar system would be hydrogen and helium. We know that the Sun is not a first generation star because we interact with heavier elements – such as carbon, nitrogen, oxygen, and sulphur – e ...
... Comments Answer: B Justification: If the Sun was a first generation star, then the only elements present in our solar system would be hydrogen and helium. We know that the Sun is not a first generation star because we interact with heavier elements – such as carbon, nitrogen, oxygen, and sulphur – e ...
Lecture Summary (11/22)
... by hydrogen fusion as helium nuclei build up in the core. With a drop in energy, the outward force cannot balance the inward force. Gravity causes collapse that heats the interior, and in a shell surrounding the helium core hydrogen fusion begins again. The outer layers of the Sun will expand at thi ...
... by hydrogen fusion as helium nuclei build up in the core. With a drop in energy, the outward force cannot balance the inward force. Gravity causes collapse that heats the interior, and in a shell surrounding the helium core hydrogen fusion begins again. The outer layers of the Sun will expand at thi ...
Solar System

The Solar System comprises the Sun and the planetary system that orbits it, either directly or indirectly. Of those objects that orbit the Sun directly, the largest eight are the planets, with the remainder being significantly smaller objects, such as dwarf planets and small Solar System bodies such as comets and asteroids. Of those that orbit the Sun indirectly, two are larger than the smallest planet.The Solar System formed 4.6 billion years ago from the gravitational collapse of a giant interstellar molecular cloud. The vast majority of the system's mass is in the Sun, with most of the remaining mass contained in Jupiter. The four smaller inner planets, Mercury, Venus, Earth and Mars, are terrestrial planets, being primarily composed of rock and metal. The four outer planets are giant planets, being substantially more massive than the terrestrials. The two largest, Jupiter and Saturn, are gas giants, being composed mainly of hydrogen and helium; the two outermost planets, Uranus and Neptune, are ice giants, being composed largely of substances with relatively high melting points compared with hydrogen and helium, called ices, such as water, ammonia and methane. All planets have almost circular orbits that lie within a nearly flat disc called the ecliptic.The Solar System also contains smaller objects. The asteroid belt, which lies between Mars and Jupiter, mostly contains objects composed, like the terrestrial planets, of rock and metal. Beyond Neptune's orbit lie the Kuiper belt and scattered disc, populations of trans-Neptunian objects composed mostly of ices, and beyond them a newly discovered population of sednoids. Within these populations are several dozen to possibly tens of thousands of objects large enough to have been rounded by their own gravity. Such objects are categorized as dwarf planets. Identified dwarf planets include the asteroid Ceres and the trans-Neptunian objects Pluto and Eris. In addition to these two regions, various other small-body populations, including comets, centaurs and interplanetary dust, freely travel between regions. Six of the planets, at least three of the dwarf planets, and many of the smaller bodies are orbited by natural satellites, usually termed ""moons"" after the Moon. Each of the outer planets is encircled by planetary rings of dust and other small objects.The solar wind, a stream of charged particles flowing outwards from the Sun, creates a bubble-like region in the interstellar medium known as the heliosphere. The heliopause is the point at which pressure from the solar wind is equal to the opposing pressure of interstellar wind; it extends out to the edge of the scattered disc. The Oort cloud, which is believed to be the source for long-period comets, may also exist at a distance roughly a thousand times further than the heliosphere. The Solar System is located in the Orion Arm, 26,000 light-years from the center of the Milky Way.