Our Solar System
... Earth, and Mars—are relatively small. They are also made of rock and have few or no moons. The outer planets—Jupiter, Saturn, Uranus, and Neptune—are huge, mostly gaseous, and have rings. The outer planets also have many moons. In general, the farther a planet is from the sun, the colder it is. Betw ...
... Earth, and Mars—are relatively small. They are also made of rock and have few or no moons. The outer planets—Jupiter, Saturn, Uranus, and Neptune—are huge, mostly gaseous, and have rings. The outer planets also have many moons. In general, the farther a planet is from the sun, the colder it is. Betw ...
Summary of week 1:
... Preview: Some basic astronomical objects and their approximate size scales Planet (ex.: Earth) An object held together by its self-gravity, in orbit about a star, that has insufficient mass to become a star (< 80 Jupiter masses) or a brown dwarf (< 13 Jupiter masses). Brown dwarf: A “failed star”, t ...
... Preview: Some basic astronomical objects and their approximate size scales Planet (ex.: Earth) An object held together by its self-gravity, in orbit about a star, that has insufficient mass to become a star (< 80 Jupiter masses) or a brown dwarf (< 13 Jupiter masses). Brown dwarf: A “failed star”, t ...
E. Sci. Astronomy Notes
... Outer Gas Planets Jupiter, Saturn, Uranus, Neptune - all have “rings” Jupiter largest planet, gas giant, less dense Pluto/Charon and 10th Planet UB 313/moon are small, solid moon-like. Comets – “dirty snowballs”, huge elliptical orbits, tails point away due to solar wind Geometry of Orbits Revolutio ...
... Outer Gas Planets Jupiter, Saturn, Uranus, Neptune - all have “rings” Jupiter largest planet, gas giant, less dense Pluto/Charon and 10th Planet UB 313/moon are small, solid moon-like. Comets – “dirty snowballs”, huge elliptical orbits, tails point away due to solar wind Geometry of Orbits Revolutio ...
Astronomy Unit Notes - sciencepowerpoint.com
... Craters can be found on earth, but most craters are eroded away by wind and water. Most meteorites also burn up in our atmosphere. Phases of the Moon ...
... Craters can be found on earth, but most craters are eroded away by wind and water. Most meteorites also burn up in our atmosphere. Phases of the Moon ...
Slide 1
... wave telescope is located in Puerto Rico with a diameter of 305 meters and is suspended over a ...
... wave telescope is located in Puerto Rico with a diameter of 305 meters and is suspended over a ...
Review Unit 1 - Effingham County Schools
... #16 Mars terrestrial planet, had surface water and flowing river, red in color due to oxidation (rust) ...
... #16 Mars terrestrial planet, had surface water and flowing river, red in color due to oxidation (rust) ...
Astrophysics - Student Reference Packet
... star. However, with the continual advancement of technology and astronomy, new objects were being discovered that called upon the need for an official definition. This debate was fully ignited in 2005 with the discovery of a new object in our solar system larger than Pluto. Originally known as 2003 ...
... star. However, with the continual advancement of technology and astronomy, new objects were being discovered that called upon the need for an official definition. This debate was fully ignited in 2005 with the discovery of a new object in our solar system larger than Pluto. Originally known as 2003 ...
View as Printable PDF
... probes are unmanned satellites or remote-controlled ‘landers’ that put equipment on or close to planets where no human has gone before. Probes have done remote sensing on Mercury and Jupiter, taken soil samples on Mars, landed on Venus, and studied Saturn’s rings up close. The most recent probes to ...
... probes are unmanned satellites or remote-controlled ‘landers’ that put equipment on or close to planets where no human has gone before. Probes have done remote sensing on Mercury and Jupiter, taken soil samples on Mars, landed on Venus, and studied Saturn’s rings up close. The most recent probes to ...
New Stars, New Planets?
... 51 Pegasi. This sun-like star is 45 light years (250 trillion miles) from the earth.5 If a planet does indeed circle this star, it is nothing like the earth. The star's light signal indicates a companion that is 190 times heavier than the earth and 22 times closer to its star than the earth is to th ...
... 51 Pegasi. This sun-like star is 45 light years (250 trillion miles) from the earth.5 If a planet does indeed circle this star, it is nothing like the earth. The star's light signal indicates a companion that is 190 times heavier than the earth and 22 times closer to its star than the earth is to th ...
Lecture 5 - Orbits, Sizes, Precession
... • The gravitational force exerted by an object is proportional to its mass • The gravitational force exerted by an object decreases with the square of the distance – If person B is twice as far away from the Sun as person A, then the force of gravity on person B is only ¼ of that on person A. ...
... • The gravitational force exerted by an object is proportional to its mass • The gravitational force exerted by an object decreases with the square of the distance – If person B is twice as far away from the Sun as person A, then the force of gravity on person B is only ¼ of that on person A. ...
- Lincoln High School
... LAW #3: The square of a planet’s sidereal period around the Sun is directly proportional to the cube of its semi-major axis. This law relates the amount of time for the planet to complete one orbit around the Sun to the planet’s average distance from the Sun. If we measure the orbital periods (P) in ...
... LAW #3: The square of a planet’s sidereal period around the Sun is directly proportional to the cube of its semi-major axis. This law relates the amount of time for the planet to complete one orbit around the Sun to the planet’s average distance from the Sun. If we measure the orbital periods (P) in ...
CHAPTER 2: Gravitation and the Waltz of the Planets
... LAW #3: The square of a planet’s sidereal period around the Sun is directly proportional to the cube of its semi-major axis. This law relates the amount of time for the planet to complete one orbit around the Sun to the planet’s average distance from the Sun. If we measure the orbital periods (P) in ...
... LAW #3: The square of a planet’s sidereal period around the Sun is directly proportional to the cube of its semi-major axis. This law relates the amount of time for the planet to complete one orbit around the Sun to the planet’s average distance from the Sun. If we measure the orbital periods (P) in ...
Planetary Portraits - a Nature News Feature.
... ring-like diffraction pattern created by circular apertures, their square aperture produces a cross-shaped pattern which can be rotated until the planet falls in one of the dark areas outside the bright cross (see left). A modified version of this system is at the heart of the Extra-Solar Planet Ima ...
... ring-like diffraction pattern created by circular apertures, their square aperture produces a cross-shaped pattern which can be rotated until the planet falls in one of the dark areas outside the bright cross (see left). A modified version of this system is at the heart of the Extra-Solar Planet Ima ...
Planet
... number of miles in real life. This is the map’s scale and is usually shown by a bar in the corner somewhere. For the map I’ve described above, the scale says that 1 inch = 100 miles (scale = 100 miles/inch). If the two cities are 27 inches apart on the map then they are 2700 miles apart in reality. ...
... number of miles in real life. This is the map’s scale and is usually shown by a bar in the corner somewhere. For the map I’ve described above, the scale says that 1 inch = 100 miles (scale = 100 miles/inch). If the two cities are 27 inches apart on the map then they are 2700 miles apart in reality. ...
Quiz # 2
... Bonus. The spectrum of a star shows an equivalent set of dark absorption lines to those of the Sun, but with one exception. Every line appears at a slightly longer wavelength, shifted toward the red end of the spectrum. What conclusion can be drawn from this observation? A) A cloud of cold gas and ...
... Bonus. The spectrum of a star shows an equivalent set of dark absorption lines to those of the Sun, but with one exception. Every line appears at a slightly longer wavelength, shifted toward the red end of the spectrum. What conclusion can be drawn from this observation? A) A cloud of cold gas and ...
Ch. 3 The Solar System - Hillsdale Community Schools
... •The attractive force between two objects. •The strength depends on the mass of the object and the distance between the objects. ...
... •The attractive force between two objects. •The strength depends on the mass of the object and the distance between the objects. ...
Methods for the detection of exoplanets
... Conditions: the position and width of the HZ depends on the presence and composition of the atmosphere (greenhouse effect - GE). On EARTH: GE raises temperature by ~32 °C ...
... Conditions: the position and width of the HZ depends on the presence and composition of the atmosphere (greenhouse effect - GE). On EARTH: GE raises temperature by ~32 °C ...
That star is an M-dwarf, smaller, dimmer and cooler than our sun. So
... (14) “I believe that planets are very” varied, said astrophysicist Sara Seager. “A whole range of them could be habitable.” (15) That’s an encouraging thought, given that M-dwarf planets are easier to find than planets that revolve around larger stars. This is for two reasons: Their orbits are short ...
... (14) “I believe that planets are very” varied, said astrophysicist Sara Seager. “A whole range of them could be habitable.” (15) That’s an encouraging thought, given that M-dwarf planets are easier to find than planets that revolve around larger stars. This is for two reasons: Their orbits are short ...
The Solar System (Ch. 6 in text) Consists of the sun (a typical star
... protoplanetary disk can become unstable this way is unsettled. High-speed collisions: fragmentation of planetesimals; these “leftovers” either bombarded the planets and their moons (see our Moon) or underwent gravitational encounters with young planets (not direct collisions) and became asteroids or ...
... protoplanetary disk can become unstable this way is unsettled. High-speed collisions: fragmentation of planetesimals; these “leftovers” either bombarded the planets and their moons (see our Moon) or underwent gravitational encounters with young planets (not direct collisions) and became asteroids or ...
SETI
... • Is there intelligent life on other planets? • If so, – Can we find them? – Can we try to communicate? • SETI is the Search for Extra Terrestrial Intelligence ...
... • Is there intelligent life on other planets? • If so, – Can we find them? – Can we try to communicate? • SETI is the Search for Extra Terrestrial Intelligence ...
Read an Excerpt!
... that “the outer region of the solar system, beyond the orbits of the planets, is occupied by a very large number of comparatively small bodies.” Edgeworth said these worlds were leftovers from the birth of the solar system. In 1951, American astronomer Gerard Kuiper suggested the same idea. For many ...
... that “the outer region of the solar system, beyond the orbits of the planets, is occupied by a very large number of comparatively small bodies.” Edgeworth said these worlds were leftovers from the birth of the solar system. In 1951, American astronomer Gerard Kuiper suggested the same idea. For many ...
Regents Review Questions.Unit 2.Astronomy
... 15 Describe the relationship between the distance from the Sun and the period of revolution for these four planets. Astronomers have discovered more than 400 planets outside of our solar system. The first extrasolar planet was detected in 1995 orbiting a star known as 51 Pegasi, which is similar in ...
... 15 Describe the relationship between the distance from the Sun and the period of revolution for these four planets. Astronomers have discovered more than 400 planets outside of our solar system. The first extrasolar planet was detected in 1995 orbiting a star known as 51 Pegasi, which is similar in ...
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.