Explore the Planets
... the Sun in our Solar System. It is the planet we evolved on and the only planet in our Solar System that is known to support life. From a distance, our planet looks like a beautiful big blue marble. There are a number of things that make our planet unique in the solar system, not the least of which ...
... the Sun in our Solar System. It is the planet we evolved on and the only planet in our Solar System that is known to support life. From a distance, our planet looks like a beautiful big blue marble. There are a number of things that make our planet unique in the solar system, not the least of which ...
Lecture (Powerpoint)
... Gravitational force is equal on both objects If orbiting, both objects move, not just one, since both are being acted on by gravity ...
... Gravitational force is equal on both objects If orbiting, both objects move, not just one, since both are being acted on by gravity ...
Lecture 2 - U of L Class Index
... • Many cultures throughout the world practiced astronomy. • They made careful observations of the sky. • Over a period of time, they would notice the cyclic motions of: ...
... • Many cultures throughout the world practiced astronomy. • They made careful observations of the sky. • Over a period of time, they would notice the cyclic motions of: ...
Pythagoras Eudoxus of Cnidus Aristotle Eratosthenes Hipparchus
... planets move faster when their orbits bring them closer to the sun. The third law is a mathematical formula used to determine the distance of a planet from the sun. ...
... planets move faster when their orbits bring them closer to the sun. The third law is a mathematical formula used to determine the distance of a planet from the sun. ...
Grade 9 Science Part 3 Other Celestial Bodies
... http://www.jpl.nasa.gov/news/news.php?release=2014-052 http://neo.jpl.nasa.gov/ ...
... http://www.jpl.nasa.gov/news/news.php?release=2014-052 http://neo.jpl.nasa.gov/ ...
Studying Space
... Parallax of stars • Aids scientists in measuring distance. • It is the apparent shift of a star over a 6 month period. • It is just like when you shut 1 eye & look at an object; then open the other & the object appears to have moved. ...
... Parallax of stars • Aids scientists in measuring distance. • It is the apparent shift of a star over a 6 month period. • It is just like when you shut 1 eye & look at an object; then open the other & the object appears to have moved. ...
Orbital Motion
... A weather satellite completes a circular orbit every 3.5 hours. How far above the Earth’s surface is it? 2) A double star consists of two identical stars, each with a mass of 3.0 x 1030 kg. They are separated by 2.0 x 1011 m between their centres. How long do they take to complete one orbit? (p. 301 ...
... A weather satellite completes a circular orbit every 3.5 hours. How far above the Earth’s surface is it? 2) A double star consists of two identical stars, each with a mass of 3.0 x 1030 kg. They are separated by 2.0 x 1011 m between their centres. How long do they take to complete one orbit? (p. 301 ...
Where`s Earth 2.0? - Institute of Astronomy
... whether it could support life. • This definition is too simple to move from habitable zone straight to potentially habitable planet. ...
... whether it could support life. • This definition is too simple to move from habitable zone straight to potentially habitable planet. ...
DOC
... Earth moves around so it is lit by the sun. The path an object takes around another object in space. A shape like a ball. A system of planets which revolve around a star (or sun) Dr. Iffat Sardharwalla ...
... Earth moves around so it is lit by the sun. The path an object takes around another object in space. A shape like a ball. A system of planets which revolve around a star (or sun) Dr. Iffat Sardharwalla ...
Lecture 25: The Outer Planets
... Pluto and Neptune •Note that for Pluto, Dperihelion = 29.7 AU Daphelion = 49.3 AU •Note that for Neptune, Dperihelion = 29.8 AU Daphelion = 30.4 AU •Hence during part of the time, Pluto is actually the 8th planet from the Sun and Neptune is the 9th planet! •This means that Pluto and Neptune can ...
... Pluto and Neptune •Note that for Pluto, Dperihelion = 29.7 AU Daphelion = 49.3 AU •Note that for Neptune, Dperihelion = 29.8 AU Daphelion = 30.4 AU •Hence during part of the time, Pluto is actually the 8th planet from the Sun and Neptune is the 9th planet! •This means that Pluto and Neptune can ...
(Earth-like) planets
... on the Earth that came from Mars. One fell in Nakhla, Egypt, in 1911. It weighed 10 kg. The most famous one (ALH84001) was discovered in the Allan Hills of Antarctica. It is dated to be 4.5 billion years old. In a remarkable paper published in 1996, geologists claimed that this meteorite had evidenc ...
... on the Earth that came from Mars. One fell in Nakhla, Egypt, in 1911. It weighed 10 kg. The most famous one (ALH84001) was discovered in the Allan Hills of Antarctica. It is dated to be 4.5 billion years old. In a remarkable paper published in 1996, geologists claimed that this meteorite had evidenc ...
Not too hot, not too cold: New Earth-like planet could
... The search for a faraway planet that could support life has found the most promising candidate to date, in the form of a distant world some 193,000 billion kilometres away from Earth. Scientists believe that the planet is made of rock, like the Earth, and sits in the "Goldilocks zone" of its sun, wh ...
... The search for a faraway planet that could support life has found the most promising candidate to date, in the form of a distant world some 193,000 billion kilometres away from Earth. Scientists believe that the planet is made of rock, like the Earth, and sits in the "Goldilocks zone" of its sun, wh ...
Lecture9_2014_v2 - UCO/Lick Observatory
... tens to hundreds of Earth masses of nebular gas, before gas is lost from the disk. Slide credit: Jonathan Fortney ...
... tens to hundreds of Earth masses of nebular gas, before gas is lost from the disk. Slide credit: Jonathan Fortney ...
View Presentation Slides
... Stars have “life cycles”. They are “born” and they “die” but are not alive like us. Stars like the Sun “die” by “puffing” off their outer layers of gas and dust. This process creates a beautiful variety of NEBULAE in the Milky Way GALAXY. ...
... Stars have “life cycles”. They are “born” and they “die” but are not alive like us. Stars like the Sun “die” by “puffing” off their outer layers of gas and dust. This process creates a beautiful variety of NEBULAE in the Milky Way GALAXY. ...
slides - quantware mips center
... Solar System, except satellites, be defined into three distinct categories in the following way: A "planet" is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) ...
... Solar System, except satellites, be defined into three distinct categories in the following way: A "planet" is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) ...
Chapter 1: A Universe of Life
... 9. Astronomy has shown us that the Earth A) occupies a special location in the universe so that life elsewhere is unlikely B) is the only planet in the universe with any kind of life C) is the only planet in the universe with advanced life D) is just one planet orbiting an ordinary star in a vast un ...
... 9. Astronomy has shown us that the Earth A) occupies a special location in the universe so that life elsewhere is unlikely B) is the only planet in the universe with any kind of life C) is the only planet in the universe with advanced life D) is just one planet orbiting an ordinary star in a vast un ...
mlife
... In search of life in the universe M.V.N. Murthy, The Institute of Mathematical Sciences, Chennai Are we alone in this universe? For centuries this question has been asked and scholars have speculated that other worlds must exist containing life in some form. Recent experiments and discoveries have b ...
... In search of life in the universe M.V.N. Murthy, The Institute of Mathematical Sciences, Chennai Are we alone in this universe? For centuries this question has been asked and scholars have speculated that other worlds must exist containing life in some form. Recent experiments and discoveries have b ...
File
... 5)Planet – a celestial body that orbits one or more stars. It is large enough that its own gravity holds it in a spherical shape and is the only body occupying it’s orbital path. Planets in our galaxy were named after Roman Gods (Mercury, Venus, mars, Jupiter and Saturn). As the planets revolve arou ...
... 5)Planet – a celestial body that orbits one or more stars. It is large enough that its own gravity holds it in a spherical shape and is the only body occupying it’s orbital path. Planets in our galaxy were named after Roman Gods (Mercury, Venus, mars, Jupiter and Saturn). As the planets revolve arou ...
Formation of the Solar System . • Questions
... • Some comets: orbital directions are not that of planets & orbits are not close to plane of planets. • 1011 - 1012 comets in loosely bound solar orbits at 50,000AU • Ejected by Jupiter into random directions • Gravitational perturbations occasionally deflect one in. • Guesstimate: 1 trillion (1012) ...
... • Some comets: orbital directions are not that of planets & orbits are not close to plane of planets. • 1011 - 1012 comets in loosely bound solar orbits at 50,000AU • Ejected by Jupiter into random directions • Gravitational perturbations occasionally deflect one in. • Guesstimate: 1 trillion (1012) ...
Second Book: Student´s Reference Book ……
... asteroids, comets and meteorites, dust and interplanetary gas. The dimensions of this system are expressed in terms of the average distance of the Earth from the Sun. The nine planets are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. ...
... asteroids, comets and meteorites, dust and interplanetary gas. The dimensions of this system are expressed in terms of the average distance of the Earth from the Sun. The nine planets are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. ...
Earth-Space Vocabulary
... • The spin of something on its axis. • It takes the Earth one day to make one rotation. (23 hours, 56 minutes) ...
... • The spin of something on its axis. • It takes the Earth one day to make one rotation. (23 hours, 56 minutes) ...
an object that moves around another object in space
... object in orbit, such as Earth moving around the Sun, which takes 365 ¼ days to complete ...
... object in orbit, such as Earth moving around the Sun, which takes 365 ¼ days to complete ...
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.