Our Solar System - Technology Resources-4
... planets aren’t as big or as hot as stars, and they can’t make light of their own. They were made from the leftovers of the same gas and dust cloud that gave birth to our star, the Sun. ...
... planets aren’t as big or as hot as stars, and they can’t make light of their own. They were made from the leftovers of the same gas and dust cloud that gave birth to our star, the Sun. ...
Fig. 16-7, p.363
... from a disk around the Sun as it formed; such protoplanetary disks are seen around many young stars • Planets like Earth are believed therefore to form as normal byproducts of stars forming • There are two types of planets in our solar system, Earth-like and Jupiter-like, results of a process we thi ...
... from a disk around the Sun as it formed; such protoplanetary disks are seen around many young stars • Planets like Earth are believed therefore to form as normal byproducts of stars forming • There are two types of planets in our solar system, Earth-like and Jupiter-like, results of a process we thi ...
Solar System has 8 planets instead of 9 — IAU official vote
... Pluto has been considered a planet since its discovery in 1930 by the American Clyde Tombaugh. The ninth planet will now effectively be airbrushed out of school and university textbooks. “The eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune,” said the IAU resolution ...
... Pluto has been considered a planet since its discovery in 1930 by the American Clyde Tombaugh. The ninth planet will now effectively be airbrushed out of school and university textbooks. “The eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune,” said the IAU resolution ...
Another exAmple: expository mode
... known as nuclear fusion to produce light. As stars use up this hydrogen, in a process that takes billions of years, they pass through certain phases or stages. In each stage, the star’s brightness, temperature, and size change. The redgiant phase occurs when the star begins to run out of hydrogen. I ...
... known as nuclear fusion to produce light. As stars use up this hydrogen, in a process that takes billions of years, they pass through certain phases or stages. In each stage, the star’s brightness, temperature, and size change. The redgiant phase occurs when the star begins to run out of hydrogen. I ...
Homework Assignment 1 — Solutions
... (b). Neptune (or Pluto, if still counted as a planet). This is because it is the slowest to orbit the Sun, and therefore the Earth can catch up with it in the shortest amount of time (relative to the other superior planets). • Q1.4 At the vernal equinox, α = 0h 0m and δ = 0◦ 00 (from the definitio ...
... (b). Neptune (or Pluto, if still counted as a planet). This is because it is the slowest to orbit the Sun, and therefore the Earth can catch up with it in the shortest amount of time (relative to the other superior planets). • Q1.4 At the vernal equinox, α = 0h 0m and δ = 0◦ 00 (from the definitio ...
Describing the Solar System File
... that of mars and Jupiter are thousands of asteroids. Asteroids could be the remains of a smashed up planet or moon. Asteroids are lumps of rock ranging from a tennis ball in size up to 700km across. It is thought that Jupiter’s gravity keeps the asteroids smeared out around this belt and stops ...
... that of mars and Jupiter are thousands of asteroids. Asteroids could be the remains of a smashed up planet or moon. Asteroids are lumps of rock ranging from a tennis ball in size up to 700km across. It is thought that Jupiter’s gravity keeps the asteroids smeared out around this belt and stops ...
Objects in the Sky Power Point
... On the first day of January 1801, Giuseppe Piazzi discovered an object which he first thought was a new comet. But after its orbit was better determined it was clear that it was not a comet but more like a small planet. Piazzi named it Ceres, after the Sicilian goddess of grain. Three other small b ...
... On the first day of January 1801, Giuseppe Piazzi discovered an object which he first thought was a new comet. But after its orbit was better determined it was clear that it was not a comet but more like a small planet. Piazzi named it Ceres, after the Sicilian goddess of grain. Three other small b ...
Option: Astrophysics Objects in the Universe: Asteroid: a small rocky
... Clusters: gravitationally bound system of galaxies or stars o Stellar cluster: group of stars held together by gravitation in the same region of space, created roughly at the same time from the same nebulae o Open Cluster: Up to several hundred stars that are 10 billion years old or less. May still ...
... Clusters: gravitationally bound system of galaxies or stars o Stellar cluster: group of stars held together by gravitation in the same region of space, created roughly at the same time from the same nebulae o Open Cluster: Up to several hundred stars that are 10 billion years old or less. May still ...
Astronomy Assignment #5: Newton`s Universal Law of Gravitation
... If the Earth was 3 A.U. from the Sun (instead of 1 A.U.), would the gravity force between the Earth and the Sun be less or more than it is now? By how many times? If Mercury was 0.2 A.U. from the Sun (instead of 0.4 A.U.), would the gravity force between Mercury and the Sun be less or more than it i ...
... If the Earth was 3 A.U. from the Sun (instead of 1 A.U.), would the gravity force between the Earth and the Sun be less or more than it is now? By how many times? If Mercury was 0.2 A.U. from the Sun (instead of 0.4 A.U.), would the gravity force between Mercury and the Sun be less or more than it i ...
Solar System - Legacy High School
... between the planets. Scientists think that this debris may be the remains of an early planet, which broke up early in the solar system. Several thousand of the largest asteroids in this belt have been given names. • The chances of an asteroid colliding with Earth are very small! But some do come clo ...
... between the planets. Scientists think that this debris may be the remains of an early planet, which broke up early in the solar system. Several thousand of the largest asteroids in this belt have been given names. • The chances of an asteroid colliding with Earth are very small! But some do come clo ...
Solar System
... between the planets. Scientists think that this debris may be the remains of an early planet, which broke up early in the solar system. Several thousand of the largest asteroids in this belt have been given names. • The chances of an asteroid colliding with Earth are very small! But some do come clo ...
... between the planets. Scientists think that this debris may be the remains of an early planet, which broke up early in the solar system. Several thousand of the largest asteroids in this belt have been given names. • The chances of an asteroid colliding with Earth are very small! But some do come clo ...
Habitable Zone - Wando High School
... image to the right, how far away the habitable zone is depends on the size/strength of the sun. The bigger the sun, the further away the habitable zone is. Stars that are much larger than the Sun have much short lifetimes, which it is unlikely that there would be enough time for any kind of life, pa ...
... image to the right, how far away the habitable zone is depends on the size/strength of the sun. The bigger the sun, the further away the habitable zone is. Stars that are much larger than the Sun have much short lifetimes, which it is unlikely that there would be enough time for any kind of life, pa ...
Physical properties of stars
... that are 1,000 times larger than our sun. pg. 450 Temperature: Surface temperatures range from 3000K to 30,000K Color is an indication of temperature. Blue hottest White Yellow Orange Red coolest Mass While the size of stars varies widely the mass does not. 15 times our Sun’s mass to .2 times our Su ...
... that are 1,000 times larger than our sun. pg. 450 Temperature: Surface temperatures range from 3000K to 30,000K Color is an indication of temperature. Blue hottest White Yellow Orange Red coolest Mass While the size of stars varies widely the mass does not. 15 times our Sun’s mass to .2 times our Su ...
Handout 3 1-2 ppt
... 1. In addition to the sun, planets, and their moons, what occupies the space in our solar system? • The solar system includes million of smaller bodies; some are tiny bits of dust or ice; others are as large as small moons. ...
... 1. In addition to the sun, planets, and their moons, what occupies the space in our solar system? • The solar system includes million of smaller bodies; some are tiny bits of dust or ice; others are as large as small moons. ...
Solar System - pgfl.org.uk
... Berlin Observatory, who found Neptune on his first night of searching in 1846. . Seventeen days later, its largest moon, Triton, was also discovered. . Nearly 4.5 billion kilometres (2.8 billion miles) from the Sun, Neptune orbits the Sun once every 165 years. ...
... Berlin Observatory, who found Neptune on his first night of searching in 1846. . Seventeen days later, its largest moon, Triton, was also discovered. . Nearly 4.5 billion kilometres (2.8 billion miles) from the Sun, Neptune orbits the Sun once every 165 years. ...
Lecture7
... to have occurred by what process? • A) Breakup of a large disk of matter which formed around the star • B) Condensation of gas from the original star nebula • C) Capture by the star of objects traversing the depths of space • D) Accretion or slow accumulation of smaller particles by mutual gravitati ...
... to have occurred by what process? • A) Breakup of a large disk of matter which formed around the star • B) Condensation of gas from the original star nebula • C) Capture by the star of objects traversing the depths of space • D) Accretion or slow accumulation of smaller particles by mutual gravitati ...
True or False: If the statement is true, write “True”, if it is “False” tell
... Earth and the other planets rotate around an imaginary line called a(n) __________________________ As the Earth travels on its journey around the sun, it moves in a pathway called a(n) ________________ ____________________ is the only planet known to support life. Mercury has a very ______________ s ...
... Earth and the other planets rotate around an imaginary line called a(n) __________________________ As the Earth travels on its journey around the sun, it moves in a pathway called a(n) ________________ ____________________ is the only planet known to support life. Mercury has a very ______________ s ...
Planet Hunters
... telescopes and the latest digital detectors, astronomers are now capable not only of detecting the presence of planets orbiting other stars, but of measuring their physical properties and even in some cases chemical makeups, all from right here on Earth. In fact, since the first distant planets were ...
... telescopes and the latest digital detectors, astronomers are now capable not only of detecting the presence of planets orbiting other stars, but of measuring their physical properties and even in some cases chemical makeups, all from right here on Earth. In fact, since the first distant planets were ...
University Mohamed Khider- Biskra Faculty of letters and
... 4. The body that supplies heat and light to the small planet we call Earth is? a. Star b. Asteroid c. Moon 5. What objects gravitational pull is so great that nothing – not even light can escape from it? a. Black Hole b. Vortex c. Shooting Star 6. Based on their average distance from the Sun, what i ...
... 4. The body that supplies heat and light to the small planet we call Earth is? a. Star b. Asteroid c. Moon 5. What objects gravitational pull is so great that nothing – not even light can escape from it? a. Black Hole b. Vortex c. Shooting Star 6. Based on their average distance from the Sun, what i ...
aphelion
... The motion of a body that travels around another body in space. A large cloud of gas and dust in interstellar space where stars are born. A dark, cooler area of the photosphere of the sun with a strong magnetic field. The outermost layer of the sun’s atmosphere. When the moon passes between the Eart ...
... The motion of a body that travels around another body in space. A large cloud of gas and dust in interstellar space where stars are born. A dark, cooler area of the photosphere of the sun with a strong magnetic field. The outermost layer of the sun’s atmosphere. When the moon passes between the Eart ...
ASTR100 Fall 2009: Exam #2 Review Sheet EXAM IS THURSDAY
... ________, _________. Which of these are found on Venus? ______________________ 2] Name some unique features of Earth that support life (Page 216 is helpful). _______ ______________________________________________________________________ 3] Describe the CO2 cycle on Earth: ___________________________ ...
... ________, _________. Which of these are found on Venus? ______________________ 2] Name some unique features of Earth that support life (Page 216 is helpful). _______ ______________________________________________________________________ 3] Describe the CO2 cycle on Earth: ___________________________ ...
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 ...
Origins of the Universe
... • Stars of a constellation are often far apart from each other, but they appear grouped together when viewed from Earth • One of the 88 sectors into which astronomers divide the sphere of the skynamed after a traditional constellation in that sector • Patterns of constellations are dynamic; therefor ...
... • Stars of a constellation are often far apart from each other, but they appear grouped together when viewed from Earth • One of the 88 sectors into which astronomers divide the sphere of the skynamed after a traditional constellation in that sector • Patterns of constellations are dynamic; therefor ...
Planetary habitability
Planetary habitability is the measure of a planet's or a natural satellite's potential to develop and sustain life. Life may develop directly on a planet or satellite or be transferred to it from another body, a theoretical process known as panspermia. As the existence of life beyond Earth is unknown, planetary habitability is largely an extrapolation of conditions on Earth and the characteristics of the Sun and Solar System which appear favourable to life's flourishing—in particular those factors that have sustained complex, multicellular organisms and not just simpler, unicellular creatures. Research and theory in this regard is a component of planetary science and the emerging discipline of astrobiology.An absolute requirement for life is an energy source, and the notion of planetary habitability implies that many other geophysical, geochemical, and astrophysical criteria must be met before an astronomical body can support life. In its astrobiology roadmap, NASA has defined the principal habitability criteria as ""extended regions of liquid water, conditions favourable for the assembly of complex organic molecules, and energy sources to sustain metabolism.""In determining the habitability potential of a body, studies focus on its bulk composition, orbital properties, atmosphere, and potential chemical interactions. Stellar characteristics of importance include mass and luminosity, stable variability, and high metallicity. Rocky, terrestrial-type planets and moons with the potential for Earth-like chemistry are a primary focus of astrobiological research, although more speculative habitability theories occasionally examine alternative biochemistries and other types of astronomical bodies.The idea that planets beyond Earth might host life is an ancient one, though historically it was framed by philosophy as much as physical science. The late 20th century saw two breakthroughs in the field. The observation and robotic spacecraft exploration of other planets and moons within the Solar System has provided critical information on defining habitability criteria and allowed for substantial geophysical comparisons between the Earth and other bodies. The discovery of extrasolar planets, beginning in the early 1990s and accelerating thereafter, has provided further information for the study of possible extraterrestrial life. These findings confirm that the Sun is not unique among stars in hosting planets and expands the habitability research horizon beyond the Solar System.The chemistry of life may have begun shortly after the Big Bang, 13.8 billion years ago, during a habitable epoch when the Universe was only 10–17 million years old. According to the panspermia hypothesis, microscopic life—distributed by meteoroids, asteroids and other small Solar System bodies—may exist throughout the universe. Nonetheless, Earth is the only place in the universe known to harbor life. Estimates of habitable zones around other stars, along with the discovery of hundreds of extrasolar planets and new insights into the extreme habitats here on Earth, suggest that there may be many more habitable places in the universe than considered possible until very recently. On 4 November 2013, astronomers reported, based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of Sun-like stars and red dwarfs within the Milky Way. 11 billion of these estimated planets may be orbiting Sun-like stars. The nearest such planet may be 12 light-years away, according to the scientists.