The most important questions to study for the exam
... Earth and all other planets orbit the Sun? • A sixteenth-century Polish astronomer named Copernicus • A seventeenth-century German astronomer named Kepler • An ancient Greek astronomer named Aristarchus 7. In the heliocentric model of the solar system, the retrograde, or "backward," westerly motion ...
... Earth and all other planets orbit the Sun? • A sixteenth-century Polish astronomer named Copernicus • A seventeenth-century German astronomer named Kepler • An ancient Greek astronomer named Aristarchus 7. In the heliocentric model of the solar system, the retrograde, or "backward," westerly motion ...
SES4U ~ The Formation of Our Solar Systemstudentcopy
... • These grains will settle to the disk midplane since they are heavier than the H and He gas. What happens next is uncertain. – One possibility is that the thin disk of dust is gravitationally unstable, leading to the formation of roughly 1 kilometer size objects known as planetesimals. – Another po ...
... • These grains will settle to the disk midplane since they are heavier than the H and He gas. What happens next is uncertain. – One possibility is that the thin disk of dust is gravitationally unstable, leading to the formation of roughly 1 kilometer size objects known as planetesimals. – Another po ...
Solar System Formation
... Summary 2 • The giant planets started off with larger cores because they included the more abundant volatile elements • This allowed them to accrete even more gas in what became a runaway process • The terrestrial planets lost any early atmospheres they had accreted because they were molten …. Ener ...
... Summary 2 • The giant planets started off with larger cores because they included the more abundant volatile elements • This allowed them to accrete even more gas in what became a runaway process • The terrestrial planets lost any early atmospheres they had accreted because they were molten …. Ener ...
Explain. How is Copernicus`s description of the system of planets
... • This diameter is only one fourth Earth's diameter. The moon's average density is about the same as the density of Earth's outer layers • The theory of the moon's origin that best fits the evidence is called the collision theory. • Material from the object and Earth's outer layers was thrown into o ...
... • This diameter is only one fourth Earth's diameter. The moon's average density is about the same as the density of Earth's outer layers • The theory of the moon's origin that best fits the evidence is called the collision theory. • Material from the object and Earth's outer layers was thrown into o ...
PHYS 390 Lecture 9 - Planetary atmospheres 9
... The observed surface temperatures are Tearth = 289 K and Tmoon = 274 K. Even at the top of the atmosphere, the Earth's temperature is 1000 K. Thus, the Earth retains its nitrogen, while the Moon has lost all of its atmosphere. Scenario for the formation of the solar system Based on the observed char ...
... The observed surface temperatures are Tearth = 289 K and Tmoon = 274 K. Even at the top of the atmosphere, the Earth's temperature is 1000 K. Thus, the Earth retains its nitrogen, while the Moon has lost all of its atmosphere. Scenario for the formation of the solar system Based on the observed char ...
16SolMW - NMSU Astronomy
... galaxy, relatively nearby to us • All stars are NOT the same: looking at a picture, what are some apparent differences? • Stars come in a wide range of brightnesses – We see stars because they shine (energy from nuclear reactions in their centers, just like the Sun – the Sun is a star!) – The appare ...
... galaxy, relatively nearby to us • All stars are NOT the same: looking at a picture, what are some apparent differences? • Stars come in a wide range of brightnesses – We see stars because they shine (energy from nuclear reactions in their centers, just like the Sun – the Sun is a star!) – The appare ...
Space exploration - Menihek Home Page
... This means that he thought the Earth was the centre of the universe, and that the sun, moon, stars and other planets revolved around it. He based this theory on the fact that he did not see the patterns of the stars in the sky change, so he assumed that the Earth was not moving because if it was t ...
... This means that he thought the Earth was the centre of the universe, and that the sun, moon, stars and other planets revolved around it. He based this theory on the fact that he did not see the patterns of the stars in the sky change, so he assumed that the Earth was not moving because if it was t ...
chapter3 - Empyrean Quest Publishers
... • Still could not detect stellar parallax, and thus still thought Earth must be at center of solar system (but recognized that other planets go around Sun) • Hired Kepler, who used Tycho’s observations to discover the truth about planetary motion. ...
... • Still could not detect stellar parallax, and thus still thought Earth must be at center of solar system (but recognized that other planets go around Sun) • Hired Kepler, who used Tycho’s observations to discover the truth about planetary motion. ...
Possibilities for life elsewhere in the Solar System In our fifth
... We will therefore discuss many aspects of extrasolar planets. We will begin by considering how one detects them at all. We will then point out that the available detection techniques are strongly biased; in fact, only very recently have we been able to detect Earthsized planets around Sun-like stars ...
... We will therefore discuss many aspects of extrasolar planets. We will begin by considering how one detects them at all. We will then point out that the available detection techniques are strongly biased; in fact, only very recently have we been able to detect Earthsized planets around Sun-like stars ...
Lecture 1: Properties of the Solar System Properties of the Solar
... Large size, low density and in outer solar system: Jupiter, Saturn, Uranus, Neptune. ...
... Large size, low density and in outer solar system: Jupiter, Saturn, Uranus, Neptune. ...
Tidal Mechanism as an Impossible Cause of the Observed Secular
... is about 100-times larger than that for Mars. Also note that the most accurate observational data for the planetary motion is from an Earth–Mars distance measurement (e.g., Standish 2005; Pitjeva 2005). Thus, let us consider the Earth–Mars distance. Then, however large 2ˇ sin 2ˇ is, one should in ...
... is about 100-times larger than that for Mars. Also note that the most accurate observational data for the planetary motion is from an Earth–Mars distance measurement (e.g., Standish 2005; Pitjeva 2005). Thus, let us consider the Earth–Mars distance. Then, however large 2ˇ sin 2ˇ is, one should in ...
What is the universe???
... remained small and rocky and (initially) without any satellites (moons) • Some debris didn’t get pulled into a planetary orbit and today makes up what is commonly known as an asteroid belt (between Mars and Jupiter) ...
... remained small and rocky and (initially) without any satellites (moons) • Some debris didn’t get pulled into a planetary orbit and today makes up what is commonly known as an asteroid belt (between Mars and Jupiter) ...
I. What is an Exoplanet?
... Launched on March 9, 2009. Duration of the mission is expected to be about 7 to 8 years Surveying our neighbourhood in Milky way As per Jan. 2013, it has found 2740 likely candidates 105 of them have been confirmed by further studies Next space mission: Gaia. To be launched in August ...
... Launched on March 9, 2009. Duration of the mission is expected to be about 7 to 8 years Surveying our neighbourhood in Milky way As per Jan. 2013, it has found 2740 likely candidates 105 of them have been confirmed by further studies Next space mission: Gaia. To be launched in August ...
The History of Astronomy
... successfully use a telescope • The sun had dark patches, now called sunspots • Four points of light (moons) orbit Jupiter • Venus has phases • Observations paved the way for Heliocentric ...
... successfully use a telescope • The sun had dark patches, now called sunspots • Four points of light (moons) orbit Jupiter • Venus has phases • Observations paved the way for Heliocentric ...
Third Nine Weeks Review – Sky Patterns
... All planets orbit around the sun. Inner Planets – the planets that are closets to the sun (Mercury, Venus, Earth, and Mars)—they are small and rocky Outer Planets – these planets are farther away from the sun and have longer orbits ( Jupiter, Saturn, Neptune, and Uranus) – they are large and t ...
... All planets orbit around the sun. Inner Planets – the planets that are closets to the sun (Mercury, Venus, Earth, and Mars)—they are small and rocky Outer Planets – these planets are farther away from the sun and have longer orbits ( Jupiter, Saturn, Neptune, and Uranus) – they are large and t ...
Chapter 10
... • Orbits of Near-Earth Objects (NEOs) carry them into the inner Solar System and across the Earth’s orbit – More than 5000 have been found, which represents an Earth collision probability of once every 10,000 years – They may be “dead” comets, shifted into their orbits by Jupiter and devoid of surfa ...
... • Orbits of Near-Earth Objects (NEOs) carry them into the inner Solar System and across the Earth’s orbit – More than 5000 have been found, which represents an Earth collision probability of once every 10,000 years – They may be “dead” comets, shifted into their orbits by Jupiter and devoid of surfa ...
No Slide Title
... A brief history of extra-solar planets • In the 16th century the Italian philosopher Giordano Bruno said that the fixed stars are really suns like our own, with planets going round them • 1991 Radio astronomers Alex Wolszczan & Dale Frail discovered planets around a pulsar PSR1257+12 – Variations i ...
... A brief history of extra-solar planets • In the 16th century the Italian philosopher Giordano Bruno said that the fixed stars are really suns like our own, with planets going round them • 1991 Radio astronomers Alex Wolszczan & Dale Frail discovered planets around a pulsar PSR1257+12 – Variations i ...
astro20 chap27 - Las Positas College
... fraction of planets with intelligent life that develops technology – don’t know how many early human civilizations failed to develop technology – the fact the many independent early civilizations did develop technology makes us believe ~ 1 ...
... fraction of planets with intelligent life that develops technology – don’t know how many early human civilizations failed to develop technology – the fact the many independent early civilizations did develop technology makes us believe ~ 1 ...
The Solar System: Cosmic encounter with Pluto
... In some ways 1977 was the beginning of the modern world, with the first computers on sale to the public – and the first home video games. It was also the year that the first Star Wars movie came out. But Earthlings didn't limit space travel to fiction – they also launched two identical spacecraft to Jup ...
... In some ways 1977 was the beginning of the modern world, with the first computers on sale to the public – and the first home video games. It was also the year that the first Star Wars movie came out. But Earthlings didn't limit space travel to fiction – they also launched two identical spacecraft to Jup ...
AST 301—Review for Exam 3 Consult “Guide to Reading and Study
... areas in astronomy at this time, so I want to make sure you study that well. Make sure you understand that there are several techniques that could be used to detect extrasolar planets, but that basically only one has been so far successful (with a few recent detections using another technique). Can ...
... areas in astronomy at this time, so I want to make sure you study that well. Make sure you understand that there are several techniques that could be used to detect extrasolar planets, but that basically only one has been so far successful (with a few recent detections using another technique). Can ...
The Solar System
... The IAU therefore resolves that planets and other bodies in our Solar System, except satellites be defined into three distinct categories in the following way: (1) A "planet“ 1 is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its selfgravity to overcome rigid body ...
... The IAU therefore resolves that planets and other bodies in our Solar System, except satellites be defined into three distinct categories in the following way: (1) A "planet“ 1 is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its selfgravity to overcome rigid body ...
AST 301 Fall 2007 AST 301: Review for Exam 3 This exam covers
... Of the numerous extrasolar planets that have been discovered, what are some of the surprising results? They are nearly all massive (e.g. like Jupiter or larger)—was this a surprise? Explain. More lower-mass planets with larger periods have been discovered as more time has elapsed since the first dis ...
... Of the numerous extrasolar planets that have been discovered, what are some of the surprising results? They are nearly all massive (e.g. like Jupiter or larger)—was this a surprise? Explain. More lower-mass planets with larger periods have been discovered as more time has elapsed since the first dis ...
Week 5 File
... A ray that emanates from the edge of the slit can be associated with another ray that emanates from the centre of the slit at distance D/2 away. The difference in the path length of the tw ...
... A ray that emanates from the edge of the slit can be associated with another ray that emanates from the centre of the slit at distance D/2 away. The difference in the path length of the tw ...
IAU definition of planet
The definition of planet set in Prague in 2006 by the International Astronomical Union (IAU) states that, in the Solar System, a planet is a celestial body which: is in orbit around the Sun, has sufficient mass to assume hydrostatic equilibrium (a nearly round shape), and has ""cleared the neighborhood"" around its orbit.A non-satellite body fulfilling only the first two of these criteria is classified as a ""dwarf planet"". According to the IAU, ""planets and dwarf planets are two distinct classes of objects"". A non-satellite body fulfilling only the first criterion is termed a ""small Solar System body"" (SSSB). Initial drafts planned to include dwarf planets as a subcategory of planets, but because this could potentially have led to the addition of several dozens of planets into the Solar System, this draft was eventually dropped. The definition was a controversial one and has drawn both support and criticism from different astronomers, but has remained in use.According to this definition, there are eight planets in the Solar System. The definition distinguishes planets from smaller bodies and is not useful outside the Solar System, where smaller bodies cannot be found yet. Extrasolar planets, or exoplanets, are covered separately under a complementary 2003 draft guideline for the definition of planets, which distinguishes them from dwarf stars, which are larger.