Planet Formation Gas Giants
... • Before H-burning, the Sun had an unstable (T Tauri) phase – high luminosity and intense solar wind. • Sun lost ~10 % of mass. Nebula dispersed halting gas-giant growth. • Occurred at ~107 years – after Jupiter/Saturn runaway but before that of Uranus/Neptune. • May be why MJ, MS > MU, MN ...
... • Before H-burning, the Sun had an unstable (T Tauri) phase – high luminosity and intense solar wind. • Sun lost ~10 % of mass. Nebula dispersed halting gas-giant growth. • Occurred at ~107 years – after Jupiter/Saturn runaway but before that of Uranus/Neptune. • May be why MJ, MS > MU, MN ...
Guided Notes on Our Solar System
... each planet orbits the Sun in an ellipse, rather than a circle. An ellipse is an oval shape that is centered on 2 points, instead of a single point, as in a circle. ...
... each planet orbits the Sun in an ellipse, rather than a circle. An ellipse is an oval shape that is centered on 2 points, instead of a single point, as in a circle. ...
Astronomers use astronomical units(AU) to measure distances
... • It also crosses Neptune's orbit, which some scientists say makes it not a planet at all • Pluto is now considered a dwarf planet ...
... • It also crosses Neptune's orbit, which some scientists say makes it not a planet at all • Pluto is now considered a dwarf planet ...
The Solar System
... IAU Definition of a Dwarf Planet In 2006, the International Astronomical Union (IAU) came up with the following definition of a dwarf planet: orbits the Sun has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium shape (i.e., it is sph ...
... IAU Definition of a Dwarf Planet In 2006, the International Astronomical Union (IAU) came up with the following definition of a dwarf planet: orbits the Sun has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium shape (i.e., it is sph ...
Astronomy HOMEWORK Chapter 5 - 9th Edition 2. Pluto is most
... snow line, these could remain frozen solid, allowing them to survive. This marks the difference between rock-and-metal objects (terrestrial planets and asteroids) and objects which have in addition volatile substances (giant planets and comet nuclei). 17. What if Earth had a highly elliptical orbit ...
... snow line, these could remain frozen solid, allowing them to survive. This marks the difference between rock-and-metal objects (terrestrial planets and asteroids) and objects which have in addition volatile substances (giant planets and comet nuclei). 17. What if Earth had a highly elliptical orbit ...
El sistema solar en una cancha de futbol
... The Solar System inside a football field In this film, Sergio Neuspiller will try to reduce the Solar System so it can fit inside a football field. With the popular Boca Juniors' stadium “La Bombonera”, Sergio will share some comparisons which will leave everyone speechless. The Sun, the central sta ...
... The Solar System inside a football field In this film, Sergio Neuspiller will try to reduce the Solar System so it can fit inside a football field. With the popular Boca Juniors' stadium “La Bombonera”, Sergio will share some comparisons which will leave everyone speechless. The Sun, the central sta ...
Document
... Our solar system has inner and outer planets. Also our solar system has a dwarf planet. All of our planets revolve around our central star, or in other words, a sun. ...
... Our solar system has inner and outer planets. Also our solar system has a dwarf planet. All of our planets revolve around our central star, or in other words, a sun. ...
Module 7 Developmental task - Number
... 1. Using the data sheet and the formulae below, calculate the volume and mass of each planet and compare these to the Earth. State any assumptions you’ve made in your calculations. Comment on your findings. 2. The speed of light is approximately 300 000 km/s. Use this to compare the shortest time it ...
... 1. Using the data sheet and the formulae below, calculate the volume and mass of each planet and compare these to the Earth. State any assumptions you’ve made in your calculations. Comment on your findings. 2. The speed of light is approximately 300 000 km/s. Use this to compare the shortest time it ...
How do the planets stay in orbit around the sun?
... cloud of gas and dust which spun around a newly forming star, our sun, at its center. The planets all formed from this spinning diskshaped cloud, and continued this rotating course around the sun after they were formed. The gravity of the sun keeps the planets in their orbits. They stay in their orb ...
... cloud of gas and dust which spun around a newly forming star, our sun, at its center. The planets all formed from this spinning diskshaped cloud, and continued this rotating course around the sun after they were formed. The gravity of the sun keeps the planets in their orbits. They stay in their orb ...
Solar System Virtual Lab Handout
... 5. How much farther from the sun is the orbit of Neptune than the orbit of Earth? (Hint: Subtract Earth’s average distance from the sun from Neptune’s average distance from the sun.) ...
... 5. How much farther from the sun is the orbit of Neptune than the orbit of Earth? (Hint: Subtract Earth’s average distance from the sun from Neptune’s average distance from the sun.) ...
Constellations and Planets in the Night Sky
... If you observed the planet Mars every night for a while, at first it would appear to move from west to east among the stars. Then it would reverse direction for a while and travel from east to west. Finally, it would once again move in a eastward direction. This is why the Greeks called planets wan ...
... If you observed the planet Mars every night for a while, at first it would appear to move from west to east among the stars. Then it would reverse direction for a while and travel from east to west. Finally, it would once again move in a eastward direction. This is why the Greeks called planets wan ...
Overview of the Solar System AST 105
... The IAU Compromise A planet is a body that: • Orbits a star • Is large enough for its own gravity to make it round • Has “cleared the neighborhood” of smaller objects Consequences: • Pluto is not a planet ...
... The IAU Compromise A planet is a body that: • Orbits a star • Is large enough for its own gravity to make it round • Has “cleared the neighborhood” of smaller objects Consequences: • Pluto is not a planet ...
Real and Scaled Sizes of Dwarf Planets Ceres 930 km Pluto 2,370
... Kuiper Belt is filled with icy objects, and is the original home of some comets that visit the inner solar system where they can be seen from Earth. Did you know? Moons don’t make a planet. Pluto and Eris both have moons, but so can much smaller asteroids! On the right is a picture of the asteroid I ...
... Kuiper Belt is filled with icy objects, and is the original home of some comets that visit the inner solar system where they can be seen from Earth. Did you know? Moons don’t make a planet. Pluto and Eris both have moons, but so can much smaller asteroids! On the right is a picture of the asteroid I ...
Real and Scaled Sizes of Dwarf Planets Ceres 930 km 0.09 mm
... Kuiper Belt is filled with icy objects, and is the original home of some comets that visit the inner solar system where they can be seen from Earth. Did you know? Moons don’t make a planet. Pluto and Eris both have moons, but so can much smaller asteroids! On the right is a picture of the asteroid I ...
... Kuiper Belt is filled with icy objects, and is the original home of some comets that visit the inner solar system where they can be seen from Earth. Did you know? Moons don’t make a planet. Pluto and Eris both have moons, but so can much smaller asteroids! On the right is a picture of the asteroid I ...
The solar system: The sun and the planets
... The Solar System: The Sun and the Planets Section 8.3 Pages 313-317 In orbit around the Sun, there are ________ planets and their __________, and billions of other smaller celestial objects. Name the planets from closest to farthest from the Sun. ...
... The Solar System: The Sun and the Planets Section 8.3 Pages 313-317 In orbit around the Sun, there are ________ planets and their __________, and billions of other smaller celestial objects. Name the planets from closest to farthest from the Sun. ...
KOI-3158: An extremely compact system of five
... from dynamical perturbations within the Galaxy. The detection of a bound M-dwarf pair means that KOI-3158 is part of a hierarchical triple system. The target star oscillates, being the densest star with detected solar-like oscillations found to date (i.e., having the highest large frequency separati ...
... from dynamical perturbations within the Galaxy. The detection of a bound M-dwarf pair means that KOI-3158 is part of a hierarchical triple system. The target star oscillates, being the densest star with detected solar-like oscillations found to date (i.e., having the highest large frequency separati ...
Chapter 27
... The second law, called the Law of Equal Areas, states that a planet sweeps out equal areas in equal amounts of time. This implies that the closer the planet is to the Sun, the faster it is moving in its orbit, which is due to the greater influence of gravity closer to the Sun. Kepler’s third law, th ...
... The second law, called the Law of Equal Areas, states that a planet sweeps out equal areas in equal amounts of time. This implies that the closer the planet is to the Sun, the faster it is moving in its orbit, which is due to the greater influence of gravity closer to the Sun. Kepler’s third law, th ...
Solar System - U
... and helium. All four gas giants have rings, although only Saturn's ring system is easily observed from Earth. ...
... and helium. All four gas giants have rings, although only Saturn's ring system is easily observed from Earth. ...
Introduction to Astronomy
... • Largest known so far is Eris (fka Xena) • Comets come from out here (or farther) ...
... • Largest known so far is Eris (fka Xena) • Comets come from out here (or farther) ...
Definition of planet
The definition of planet, since the word was coined by the ancient Greeks, has included within its scope a wide range of celestial bodies. Greek astronomers employed the term asteres planetai (ἀστέρες πλανῆται), ""wandering stars"", for star-like objects which apparently moved over the sky. Over the millennia, the term has included a variety of different objects, from the Sun and the Moon to satellites and asteroids.By the end of the 19th century the word planet, though it had yet to be defined, had become a working term applied only to a small set of objects in the Solar System. After 1992, however, astronomers began to discover many additional objects beyond the orbit of Neptune, as well as hundreds of objects orbiting other stars. These discoveries not only increased the number of potential planets, but also expanded their variety and peculiarity. Some were nearly large enough to be stars, while others were smaller than Earth's moon. These discoveries challenged long-perceived notions of what a planet could be.The issue of a clear definition for planet came to a head in 2005 with the discovery of the trans-Neptunian object Eris, a body more massive than the smallest then-accepted planet, Pluto. In its 2006 response, the International Astronomical Union (IAU), recognised by astronomers as the world body responsible for resolving issues of nomenclature, released its decision on the matter. This definition, which applies only to the Solar System, states that a planet is a body that orbits the Sun, is massive enough for its own gravity to make it round, and has ""cleared its neighbourhood"" of smaller objects around its orbit. Under this new definition, Pluto and the other trans-Neptunian objects do not qualify as planets. The IAU's decision has not resolved all controversies, and while many scientists have accepted the definition, some in the astronomical community have rejected it outright.