How our Solar System (and Moon) came to be
... • IRAS launched into orbit 1983 – Direct evidence that solid matter exists around stars – Can cloud particles be early stages in the development of the planets? ...
... • IRAS launched into orbit 1983 – Direct evidence that solid matter exists around stars – Can cloud particles be early stages in the development of the planets? ...
Extra-Solar Planets
... Transits If a planet’s orbit happens to be perfectly edge-on from our point of view, it will pass directly between us and its star. When this happens, the light from the star will decrease very slightly (less than 1%). About 60 planets have been found by watching stars to see if they dim periodical ...
... Transits If a planet’s orbit happens to be perfectly edge-on from our point of view, it will pass directly between us and its star. When this happens, the light from the star will decrease very slightly (less than 1%). About 60 planets have been found by watching stars to see if they dim periodical ...
Universe Now - Course Pages of Physics Department
... • The formation theory has to explain currently observed dynamical and physical properties of different objects in the Solar System: – Orbits of the planets are nearly circular and nearly in the equatorial plane of the Sun (but not exactly!). – The planets are orbiting in the same direction (also t ...
... • The formation theory has to explain currently observed dynamical and physical properties of different objects in the Solar System: – Orbits of the planets are nearly circular and nearly in the equatorial plane of the Sun (but not exactly!). – The planets are orbiting in the same direction (also t ...
Planet Facts Matching Cards
... This is the only planet that is less dense than water, meaning that it would float in water. ...
... This is the only planet that is less dense than water, meaning that it would float in water. ...
From Big bang to lives on planets
... –About 85% of known exoplanets are detected by the technique –The Doppler method is sensitive to massive planets around relatively nearby stars Advantages of Transits –Transits offer the only way we currently have to make a direct measurement of the radii of exoplanets –Gives an estimate of the dens ...
... –About 85% of known exoplanets are detected by the technique –The Doppler method is sensitive to massive planets around relatively nearby stars Advantages of Transits –Transits offer the only way we currently have to make a direct measurement of the radii of exoplanets –Gives an estimate of the dens ...
Chapter 7
... (g) All planets and moons that have a solid surface show evidence of craters. (h) All Jovian planets have ring systems. (i) Asteroids, comets, and meteoroids populate the solar system along with the planets, and each category of objects has its own pattern of motion and location. (j) The planets hav ...
... (g) All planets and moons that have a solid surface show evidence of craters. (h) All Jovian planets have ring systems. (i) Asteroids, comets, and meteoroids populate the solar system along with the planets, and each category of objects has its own pattern of motion and location. (j) The planets hav ...
The Newtonian Revolution: The discovery of natural law
... • …Turns into what is probably the single most useful and valuable equation in all of astronomy. A story to be continued in the ...
... • …Turns into what is probably the single most useful and valuable equation in all of astronomy. A story to be continued in the ...
Note: Bring the solved worksheet on Sunday, 21 st February 2016
... 16. How are the solar eclipses similar to lunar eclipses? a. They both involve the Moon b. They both cast a shadow on Earth. c. They do not involve any star 17. Which sequence is in the correct order? a. waxing crescent, first quarter, waxing gibbous, full moon b. full moon, waxing gibbous, first q ...
... 16. How are the solar eclipses similar to lunar eclipses? a. They both involve the Moon b. They both cast a shadow on Earth. c. They do not involve any star 17. Which sequence is in the correct order? a. waxing crescent, first quarter, waxing gibbous, full moon b. full moon, waxing gibbous, first q ...
The Origin of Our Solar System
... • In the inner region, the collisions between neighboring dust grains formed small chunks of solid material • Planetesimals: over a few million years, these small chucks coalesced into roughly a billion asteroid-like objects called planetesimals • Planetesimals have a typical diameter of a kilometer ...
... • In the inner region, the collisions between neighboring dust grains formed small chunks of solid material • Planetesimals: over a few million years, these small chucks coalesced into roughly a billion asteroid-like objects called planetesimals • Planetesimals have a typical diameter of a kilometer ...
Mercury - alexanderscience8
... What IS a Planet? As of 2006, a planet is defined by three criteria: 1) It is a celestial body that orbits the Sun. 2) It is massive enough that its own gravity causes it to form a spherical shape. 3) It has cleared the neighborhood around its orbit. Under this definition our solar system has eight ...
... What IS a Planet? As of 2006, a planet is defined by three criteria: 1) It is a celestial body that orbits the Sun. 2) It is massive enough that its own gravity causes it to form a spherical shape. 3) It has cleared the neighborhood around its orbit. Under this definition our solar system has eight ...
Summary of the Presentation
... becomes increasingly harsh, and at least once (about 250 million years ago), as the Earth warmed above 300K, methane sequestered at the ocean floor was released to the atmosphere. This contributed to the largest mass extinction on Earth (over 90% of all species lost). Hence it is likely that 325K is ...
... becomes increasingly harsh, and at least once (about 250 million years ago), as the Earth warmed above 300K, methane sequestered at the ocean floor was released to the atmosphere. This contributed to the largest mass extinction on Earth (over 90% of all species lost). Hence it is likely that 325K is ...
Simon P. Balm Astronomy 5, Test #1, Sample Questions
... A) four small planets close to the Sun, four large planets far from the Sun and one small planet furthest from the Sun B) two small planets close to the Sun, six larger planets much farther from the Sun. C) two large planets close to the Sun, three small planets next out, and four large planets fart ...
... A) four small planets close to the Sun, four large planets far from the Sun and one small planet furthest from the Sun B) two small planets close to the Sun, six larger planets much farther from the Sun. C) two large planets close to the Sun, three small planets next out, and four large planets fart ...
Astronomy Final Exam Review
... system formed from a rotating cloud of gas and dust, which condensed to form the sun and all other solar system objects ...
... system formed from a rotating cloud of gas and dust, which condensed to form the sun and all other solar system objects ...
October 3
... rotating cloud, wouldn’t you expect that all the pieces would have the same angular momentum as the original cloud? How must the solar system have changed since the time of its formation that this is no longer the case? ...
... rotating cloud, wouldn’t you expect that all the pieces would have the same angular momentum as the original cloud? How must the solar system have changed since the time of its formation that this is no longer the case? ...
Movement around the sun - E
... moves from one side to another. Earth moves around the Sun causing sunrise and sunset. Rotation of the Earth: Earth orbits around the Sun. It takes one year to go around the Sun one complete time. Earth also rotates, or spins, on its axis. It takes one day to spin around itself one complete time. E ...
... moves from one side to another. Earth moves around the Sun causing sunrise and sunset. Rotation of the Earth: Earth orbits around the Sun. It takes one year to go around the Sun one complete time. Earth also rotates, or spins, on its axis. It takes one day to spin around itself one complete time. E ...
In Retrospect: Kepler`s Astronomia Nova
... published, the heliocentric model of the Solar System was only just verified. The concept that Earth and other planets orbit the Sun is credited primarily to Nicolaus Copernicus, who published his theory in 1543, more than 60 years before Kepler’s book, although the idea itself dates back at least a ...
... published, the heliocentric model of the Solar System was only just verified. The concept that Earth and other planets orbit the Sun is credited primarily to Nicolaus Copernicus, who published his theory in 1543, more than 60 years before Kepler’s book, although the idea itself dates back at least a ...
Basics of Atmospheres and their Formation
... most of the proto-solar system’s material, these planets are large • Beyond, is Kuiper Belt of 10’s of thousands of ice worlds a few hundred miles across or less • 100x further away is the Oort Cloud, size limited by tidal forces from other stars in our Galaxy to about ½ light year outer radius, of ...
... most of the proto-solar system’s material, these planets are large • Beyond, is Kuiper Belt of 10’s of thousands of ice worlds a few hundred miles across or less • 100x further away is the Oort Cloud, size limited by tidal forces from other stars in our Galaxy to about ½ light year outer radius, of ...
section 4 powerpoint
... gravitational forces, i.e. zero gravity, it would have to be an infinite distance away from every other object, which is not possible. So the term “zero gravity” cannot apply anywhere in the known universe. ...
... gravitational forces, i.e. zero gravity, it would have to be an infinite distance away from every other object, which is not possible. So the term “zero gravity” cannot apply anywhere in the known universe. ...
Space is Big…
... The mass of the star is unknown. The mass estimated from its orbital motion is about 100 solar masses. On the other hand, the mass estimated from its luminosity is about 25-40 solar masses. ...
... The mass of the star is unknown. The mass estimated from its orbital motion is about 100 solar masses. On the other hand, the mass estimated from its luminosity is about 25-40 solar masses. ...
The sun gives off energy all of the time
... 2. One way to compare planets is via their blackbody or effective temperatures. To calculate this, we assume that the solar radiation per unit area at a distance D from a star with luminosity L is L/4πD2 . Thus a planet of radius r absorbs solar power at a rate proportional to the ratio of its cross ...
... 2. One way to compare planets is via their blackbody or effective temperatures. To calculate this, we assume that the solar radiation per unit area at a distance D from a star with luminosity L is L/4πD2 . Thus a planet of radius r absorbs solar power at a rate proportional to the ratio of its cross ...
Newton derives Kepler`s laws
... and the time it takes for one orbit to get the velocity. This should give the same answer as the equation vE=(GMS/r)1/2, where vE is the unknown velocity of Earth in its orbit, G is the Gravitational constant, Ms is the mass of the Sun and r is the Earth-Sun distance. (one astronomical unit, r=1.5 x ...
... and the time it takes for one orbit to get the velocity. This should give the same answer as the equation vE=(GMS/r)1/2, where vE is the unknown velocity of Earth in its orbit, G is the Gravitational constant, Ms is the mass of the Sun and r is the Earth-Sun distance. (one astronomical unit, r=1.5 x ...
ppt - The Eclecticon of Dr French
... of 8 million years. There are an infinite number of Universes in ‘existence’. Existence itself renews after a cycle of 311 trillion years! The Ancient Egyptians believed the flat Earth god Geb was overarched by the air god Shu and then the sky God Nut. During the day the sun god Ra would traverse th ...
... of 8 million years. There are an infinite number of Universes in ‘existence’. Existence itself renews after a cycle of 311 trillion years! The Ancient Egyptians believed the flat Earth god Geb was overarched by the air god Shu and then the sky God Nut. During the day the sun god Ra would traverse th ...
Planetary Orbit Simulator – Pretest
... a) the shape of the planet's orbit (for a given average distance) b) the average distance of the planet from the sun c) both of the above d) neither of the above Question 18: Which of the orbital distances below correspond to an eccentricity of 0.1? a) 0.5 AU b) 1 AU c) 4 AU d) 13.6 AU e) all of th ...
... a) the shape of the planet's orbit (for a given average distance) b) the average distance of the planet from the sun c) both of the above d) neither of the above Question 18: Which of the orbital distances below correspond to an eccentricity of 0.1? a) 0.5 AU b) 1 AU c) 4 AU d) 13.6 AU e) all of th ...
- Astronomical Society of the Pacific
... fastest spaceship ever launched — it is already beyond Mars and the Asteroid Belt, and it has an encounter with Jupiter coming up on February 28, 2007. Not bad for it’s first year of flight, right? But the long haul to Pluto will take another 8 years — yes, the Solar System is really, really big. The ...
... fastest spaceship ever launched — it is already beyond Mars and the Asteroid Belt, and it has an encounter with Jupiter coming up on February 28, 2007. Not bad for it’s first year of flight, right? But the long haul to Pluto will take another 8 years — yes, the Solar System is really, really big. The ...
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.