Lecture 18
... • Instabilities late in the red giant's life push the less dense outer layers (beyond the core) of the star away • In the meantime, the core is contracting. This contraction releases yet more gravitational energy, so much in fact that the outward pressure pushes all the layers outside of the core ou ...
... • Instabilities late in the red giant's life push the less dense outer layers (beyond the core) of the star away • In the meantime, the core is contracting. This contraction releases yet more gravitational energy, so much in fact that the outward pressure pushes all the layers outside of the core ou ...
1- Table of Contents I - Create an automatic TOC Practice Tutorial File
... Mars has two moons, Phobos and Deimos, which are named after the sons of the Roman god Mars. These tiny bodies are heavily cratered, dark chunks of rock and may be asteroids captured by the gravitational pull of Mars. Phobos orbits Mars once in less than one Martian day, so it appears to rise in the ...
... Mars has two moons, Phobos and Deimos, which are named after the sons of the Roman god Mars. These tiny bodies are heavily cratered, dark chunks of rock and may be asteroids captured by the gravitational pull of Mars. Phobos orbits Mars once in less than one Martian day, so it appears to rise in the ...
Exploring the Solar System - Rourke Publishing eBook Delivery
... lthough there are many solar systems, we are most familiar with our own. The Sun is a large star at the ...
... lthough there are many solar systems, we are most familiar with our own. The Sun is a large star at the ...
What makes a planet habitable?
... brightest burn for only a few million years, then flame out. Meanwhile, our sun has been shining steadily for 4.5 billion years, with about another 5 billion years to go. The first microscopic life-forms are thought to have emerged about a billion years after Earth’s formation from the dust left over ...
... brightest burn for only a few million years, then flame out. Meanwhile, our sun has been shining steadily for 4.5 billion years, with about another 5 billion years to go. The first microscopic life-forms are thought to have emerged about a billion years after Earth’s formation from the dust left over ...
Moons of the Jovian Planets: Satellites of Ice and Rock
... geologically active than small rocky planets? • Hot interiors needed for geological activity. • Ice deforms more easily than solid rock – Less internal heat is required – Smaller objects can be geologically active. • Tidal heating important for some icy moons, but not for rocky planets (example: t ...
... geologically active than small rocky planets? • Hot interiors needed for geological activity. • Ice deforms more easily than solid rock – Less internal heat is required – Smaller objects can be geologically active. • Tidal heating important for some icy moons, but not for rocky planets (example: t ...
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The interiors of Planets
... Cores & Mantles • The relative Core/Mantle sizes depend on the planet’s ...
... Cores & Mantles • The relative Core/Mantle sizes depend on the planet’s ...
The energy budget of planets
... Additional complication: Solar luminosity changes with time (slowly)… Sun was less luminous in the past and is slowly getting more luminous Faint Sun problem: initial Solar luminosity is predicted to be ~70% of the current luminosity… but no evidence that temperature on the early Earth was much col ...
... Additional complication: Solar luminosity changes with time (slowly)… Sun was less luminous in the past and is slowly getting more luminous Faint Sun problem: initial Solar luminosity is predicted to be ~70% of the current luminosity… but no evidence that temperature on the early Earth was much col ...
SCI 103
... between the Sun and the Superior Planets? A) The Superior Planets only go retrograde when in opposition to the Sun. B) The Superior Planets have a maximum elongation and appeared “tied” to the Sun. C) The Superior Planets are never seen at opposition to the Sun. D) The Superior Planets only go retro ...
... between the Sun and the Superior Planets? A) The Superior Planets only go retrograde when in opposition to the Sun. B) The Superior Planets have a maximum elongation and appeared “tied” to the Sun. C) The Superior Planets are never seen at opposition to the Sun. D) The Superior Planets only go retro ...
1. (5 points) Place the following in order of DENSITY beginning with
... 4. (4 points) Suppose you have been tasked to engage the president of the “Pluto is a Planet” society in a debate on the status of Pluto. Using any combination of your knowledge of the 8 major planets and/or comets and other minor planets to give 3 bullet points arguing that Pluto is NOT a planet. ...
... 4. (4 points) Suppose you have been tasked to engage the president of the “Pluto is a Planet” society in a debate on the status of Pluto. Using any combination of your knowledge of the 8 major planets and/or comets and other minor planets to give 3 bullet points arguing that Pluto is NOT a planet. ...
Planet Formation in progress
... Wind flows in opposite directions in zones vs. belts (differential rotation). Differences are 100s of km/h. ...
... Wind flows in opposite directions in zones vs. belts (differential rotation). Differences are 100s of km/h. ...
Astronomy 82 - Problem Set #1
... be relatively little “leakage” of helium from Jupiter out into space. Contrast this with the Earth: its escape velocity is much lower (~11 km/s) and its temperature is a bit higher, so there is a slow, but substantial, “leak” of helium from Earth's atmosphere. The helium we see is being constantly r ...
... be relatively little “leakage” of helium from Jupiter out into space. Contrast this with the Earth: its escape velocity is much lower (~11 km/s) and its temperature is a bit higher, so there is a slow, but substantial, “leak” of helium from Earth's atmosphere. The helium we see is being constantly r ...
2005
... Introduction: Our Sun is a middle-aged, mainsequence star that will eventually evolve into a bloated red giant before finally shrinking and ending its life as a compact, dense white dwarf. During this evolution, the swollen Sun will engulf Mercury, Venus and perhaps the Earth, pulverize many asteroi ...
... Introduction: Our Sun is a middle-aged, mainsequence star that will eventually evolve into a bloated red giant before finally shrinking and ending its life as a compact, dense white dwarf. During this evolution, the swollen Sun will engulf Mercury, Venus and perhaps the Earth, pulverize many asteroi ...
Sample Midterm
... If Titan orbits Saturn at a distance of 1.2 x 106 km and has an orbital period of 16 days, what is Saturn’s mass? If the mass of the Earth is 6.0 x 1024 kg, how does Saturn’s mass compare to that of the Earth? ...
... If Titan orbits Saturn at a distance of 1.2 x 106 km and has an orbital period of 16 days, what is Saturn’s mass? If the mass of the Earth is 6.0 x 1024 kg, how does Saturn’s mass compare to that of the Earth? ...
The Sun - TutorPlus
... • Solar Wind & Interplanetary Magnetic Field – Difference in pressure between corona and interplanetary space causes outflow of material from corona. This is the solar wind. – Speeds of 400–500 kms-1 and takes 3 to 4 days to reach Earth. – Near Earth has density of 5 protons and 5 electrons per ...
... • Solar Wind & Interplanetary Magnetic Field – Difference in pressure between corona and interplanetary space causes outflow of material from corona. This is the solar wind. – Speeds of 400–500 kms-1 and takes 3 to 4 days to reach Earth. – Near Earth has density of 5 protons and 5 electrons per ...
Taylor - St. Brigid
... € It has an atmosphere € Many people thought the Earth was flat € Many people thought the Earth was round € It is slightly pear shaped ...
... € It has an atmosphere € Many people thought the Earth was flat € Many people thought the Earth was round € It is slightly pear shaped ...
Formation and evolution of the Solar System
The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.This widely accepted model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, physics, geology, and planetary science. Since the dawn of the space age in the 1950s and the discovery of extrasolar planets in the 1990s, the model has been both challenged and refined to account for new observations.The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later been captured by their planets. Still others, such as the Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets often shifted due to gravitational interactions. This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.In roughly 5 billion years, the Sun will cool and expand outward many times its current diameter (becoming a red giant), before casting off its outer layers as a planetary nebula and leaving behind a stellar remnant known as a white dwarf. In the far distant future, the gravity of passing stars will gradually reduce the Sun's retinue of planets. Some planets will be destroyed, others ejected into interstellar space. Ultimately, over the course of tens of billions of years, it is likely that the Sun will be left with none of the original bodies in orbit around it.