How Big Is the Solar System
... planet from the Sun, and is the first of what are called the Outer Planets. Its average distance from the Sun is almost 467 million miles, or 50 cm in our bead model. If you got on a jet and flew at 600 miles per hour from the Sun to Jupiter, it would take 89 years. If you could drive the same dista ...
... planet from the Sun, and is the first of what are called the Outer Planets. Its average distance from the Sun is almost 467 million miles, or 50 cm in our bead model. If you got on a jet and flew at 600 miles per hour from the Sun to Jupiter, it would take 89 years. If you could drive the same dista ...
conjunction and opposition
... We know that the orbits of planets around the Sun are not circular, but are elliptical. This was stated by the astronomer Kepler in his first law. As a result, during one orbit, there must be a point where the Earth (or other planet) is closest to the Sun and another point where the planet is furthe ...
... We know that the orbits of planets around the Sun are not circular, but are elliptical. This was stated by the astronomer Kepler in his first law. As a result, during one orbit, there must be a point where the Earth (or other planet) is closest to the Sun and another point where the planet is furthe ...
May 8, 2012 - Plummer Pumas Science
... The Sun’s temperature was much cooler and it was much smaller. __________________________________________________________________________________________________ __________________________________________________________________________________________________ _______________________________________ ...
... The Sun’s temperature was much cooler and it was much smaller. __________________________________________________________________________________________________ __________________________________________________________________________________________________ _______________________________________ ...
Magnetic fields
... These planets have only a few surprises. The biggest is that Uranus is tilted on its side by more than 90 degrees. This gives it very odd seasons. In “fall” and “spring”, the planet rotates in the direction it orbits. This means the side faces the sun. In “winter” and “summer”, one pole faces this s ...
... These planets have only a few surprises. The biggest is that Uranus is tilted on its side by more than 90 degrees. This gives it very odd seasons. In “fall” and “spring”, the planet rotates in the direction it orbits. This means the side faces the sun. In “winter” and “summer”, one pole faces this s ...
Quiz Lecture 3
... Which one of the following assumptions do astronomers use as they attempt to explain the universe? a. Effects can be unrelated to any cause. b. The force of gravity is caused by objects rotating or spinning. c. A object can exhibit a change in motion without a force being applied to it. d. Scientifi ...
... Which one of the following assumptions do astronomers use as they attempt to explain the universe? a. Effects can be unrelated to any cause. b. The force of gravity is caused by objects rotating or spinning. c. A object can exhibit a change in motion without a force being applied to it. d. Scientifi ...
SETI: First Considerations (PowerPoint)
... In the ‘steady state,’ there will be at least several billion radiating stars out there. Stars much more massive than the Sun burn up their fuel very quickly, so life won’t evolve much there before it’s gone. But the vast majority of stars are sun-sized or less, and will last a very long time. Some ...
... In the ‘steady state,’ there will be at least several billion radiating stars out there. Stars much more massive than the Sun burn up their fuel very quickly, so life won’t evolve much there before it’s gone. But the vast majority of stars are sun-sized or less, and will last a very long time. Some ...
AN INTRODUCTION TO ASTRONOMY Dr. Uri Griv Department of Physics, Ben-Gurion University
... near-infrared wavelengths the planet appears substantially darkened, improving the contrast between the otherwise relatively bright planet and the normally faint rings. In fact, the narrow Uranian rings are all but impossible to see in visible light with earthbound telescopes and were discovered onl ...
... near-infrared wavelengths the planet appears substantially darkened, improving the contrast between the otherwise relatively bright planet and the normally faint rings. In fact, the narrow Uranian rings are all but impossible to see in visible light with earthbound telescopes and were discovered onl ...
Conversations with the Earth
... Jill Tarter and Margaret Turnbull • These Sun-like, habitable stars have just the right distance, constancy, and temperature to qualify in a forthcoming enlarged radio search. ...
... Jill Tarter and Margaret Turnbull • These Sun-like, habitable stars have just the right distance, constancy, and temperature to qualify in a forthcoming enlarged radio search. ...
7.1 Planetary Motion and Gravitation In spite of many common
... PYTHAGORAS (540-470 B.C.) studied under the Ionians, developed his own school of thought and established a school and religious order in southern Italy. His doctrines strongly influenced Parmenides. He developed geometry and advanced geometric principles and proposed that the earth was spherical. PH ...
... PYTHAGORAS (540-470 B.C.) studied under the Ionians, developed his own school of thought and established a school and religious order in southern Italy. His doctrines strongly influenced Parmenides. He developed geometry and advanced geometric principles and proposed that the earth was spherical. PH ...
The Milky Way
... differences between terrestrial and Jovian planets? a. The temperature of the accretion disk was high close to the Sun and low far from the Sun. b. Terrestrial planets formed closer to the Sun, and are thus made of high-density rocky materials. c. Jovian planets are large and have high-mass because ...
... differences between terrestrial and Jovian planets? a. The temperature of the accretion disk was high close to the Sun and low far from the Sun. b. Terrestrial planets formed closer to the Sun, and are thus made of high-density rocky materials. c. Jovian planets are large and have high-mass because ...
sorption feature centered near 0.7 µm and attributed → Fe 3+
... System, including physical distribution of objects out through the Kuiper Belt, are not yet fully understood. Unifying these diverse characteristics has been the subject of multiple dynamical studies of the Solar System. The recent “Nice model” [1,2,3] describes a scenario in which the Jovian planet ...
... System, including physical distribution of objects out through the Kuiper Belt, are not yet fully understood. Unifying these diverse characteristics has been the subject of multiple dynamical studies of the Solar System. The recent “Nice model” [1,2,3] describes a scenario in which the Jovian planet ...
NEBULAR HYPOTHESIS
... ⦿ When the center reaches about 10,000 degrees Celsius (about 18,000 degrees F) and hydrogen fusion begins, a STAR is born. ...
... ⦿ When the center reaches about 10,000 degrees Celsius (about 18,000 degrees F) and hydrogen fusion begins, a STAR is born. ...
On the hunt for a mystery planet
... stays alert, never once clipping an oxygen sensor onto his finger to see how he is coping with the altitude. His logbook fills up with notations: field number, chip number, exposure time. He reorders targets on the fly, rearranging what he is looking at to improve the time gap between the fields. Su ...
... stays alert, never once clipping an oxygen sensor onto his finger to see how he is coping with the altitude. His logbook fills up with notations: field number, chip number, exposure time. He reorders targets on the fly, rearranging what he is looking at to improve the time gap between the fields. Su ...
1- Table of Contents I - Create an automatic TOC Practice Tutorial File
... commonly divided into two groups: the inner planets (Mercury, Venus, Earth, and Mars) and the outer planets (Jupiter, Saturn, Uranus, and Neptune). The inner planets are small and are composed primarily of rock and iron. The outer planets are much larger and consist mainly of hydrogen, helium, and i ...
... commonly divided into two groups: the inner planets (Mercury, Venus, Earth, and Mars) and the outer planets (Jupiter, Saturn, Uranus, and Neptune). The inner planets are small and are composed primarily of rock and iron. The outer planets are much larger and consist mainly of hydrogen, helium, and i ...
Mercury - School
... Distance = distance from sun compared to Earth Mass = mass of the planet compared to the mass of the Earth Diameter = distance from one side of the planet to the other through the centre of the planet. ...
... Distance = distance from sun compared to Earth Mass = mass of the planet compared to the mass of the Earth Diameter = distance from one side of the planet to the other through the centre of the planet. ...
Historical View
... parallax. He found that the comet existed at least four times farther away than the Moon. In addition, he suggested that the comet moved around the Sun on circular orbits, like Venus and Mercury. • The debate on comet's trajectories could have continued for a long time. Fortunately, at the very same ...
... parallax. He found that the comet existed at least four times farther away than the Moon. In addition, he suggested that the comet moved around the Sun on circular orbits, like Venus and Mercury. • The debate on comet's trajectories could have continued for a long time. Fortunately, at the very same ...
The Sun and Planets Homework Solution 1.
... scale of 1-to-1.274 × 109 . In this case you would have to divide all other distances and diameters by 1.274 × 109 to end up with a consistent model. You could have used any other scaling, the only requirement is that your scaling is consistent. In Table 1 we provide a consistent scaling for a model ...
... scale of 1-to-1.274 × 109 . In this case you would have to divide all other distances and diameters by 1.274 × 109 to end up with a consistent model. You could have used any other scaling, the only requirement is that your scaling is consistent. In Table 1 we provide a consistent scaling for a model ...
3 Habitable Zones in Extrasolar Planetary Systems
... The same type of HZ calculations, both on the base of climatic constraints and on the base of Earth system modeling as well, can be performed for stars with masses different from the solar mass. Kasting et al. [13] restricted themselves to stellar lifetimes greater than 2 Ga which corresponds to mas ...
... The same type of HZ calculations, both on the base of climatic constraints and on the base of Earth system modeling as well, can be performed for stars with masses different from the solar mass. Kasting et al. [13] restricted themselves to stellar lifetimes greater than 2 Ga which corresponds to mas ...
Lecture 21: Planet formation III. Planet
... Core formation: A solid protoplanet (“core”) grows via a succession of twobody collisions until it becomes massive enough to retain a significant gaseous atmosphere or envelope (similar to terrestrial planet formation). Hydrostatic growth: Initially the envelope surrounding the solid core is in hydr ...
... Core formation: A solid protoplanet (“core”) grows via a succession of twobody collisions until it becomes massive enough to retain a significant gaseous atmosphere or envelope (similar to terrestrial planet formation). Hydrostatic growth: Initially the envelope surrounding the solid core is in hydr ...
Terrestrial Planets
... However, when bodies in this zone collide, they initiate cascades of further collisions among the debris and between it and other members of the system, eventually grinding a significant amount of material into dust grains distributed in a so-called debris disk. Because the grains have larger surfac ...
... However, when bodies in this zone collide, they initiate cascades of further collisions among the debris and between it and other members of the system, eventually grinding a significant amount of material into dust grains distributed in a so-called debris disk. Because the grains have larger surfac ...
Lecture 1
... comprehensive heliocentric model • Copernicus’s heliocentric (Sun-centered) theory simplified the general explanation of planetary motions • In a heliocentric system, the Earth is one of the planets orbiting the Sun • The sidereal period of a planet, its true orbital period, is measured with respect ...
... comprehensive heliocentric model • Copernicus’s heliocentric (Sun-centered) theory simplified the general explanation of planetary motions • In a heliocentric system, the Earth is one of the planets orbiting the Sun • The sidereal period of a planet, its true orbital period, is measured with respect ...
Starry Starry Night Vocabulary
... Gravity: The natural force that causes things to fall toward the earth. Gravity attracts a body toward any other physical body having mass. The Earth's gravity keeps us grounded and causes objects to fall. Hypergiant stars: The largest stars in the universe, even larger than supergiants. This star h ...
... Gravity: The natural force that causes things to fall toward the earth. Gravity attracts a body toward any other physical body having mass. The Earth's gravity keeps us grounded and causes objects to fall. Hypergiant stars: The largest stars in the universe, even larger than supergiants. This star h ...
Class 26: EXAM 2
... E) Light pollution refers to the lights that must be used inside major observatories and that make it difficult for astronomers' eyes to adapt to darkness. 2) Which of the following statements best describes the two principal advantages of telescopes over eyes? A) Telescopes have much more magnifica ...
... E) Light pollution refers to the lights that must be used inside major observatories and that make it difficult for astronomers' eyes to adapt to darkness. 2) Which of the following statements best describes the two principal advantages of telescopes over eyes? A) Telescopes have much more magnifica ...
Definition of planet
The definition of planet, since the word was coined by the ancient Greeks, has included within its scope a wide range of celestial bodies. Greek astronomers employed the term asteres planetai (ἀστέρες πλανῆται), ""wandering stars"", for star-like objects which apparently moved over the sky. Over the millennia, the term has included a variety of different objects, from the Sun and the Moon to satellites and asteroids.By the end of the 19th century the word planet, though it had yet to be defined, had become a working term applied only to a small set of objects in the Solar System. After 1992, however, astronomers began to discover many additional objects beyond the orbit of Neptune, as well as hundreds of objects orbiting other stars. These discoveries not only increased the number of potential planets, but also expanded their variety and peculiarity. Some were nearly large enough to be stars, while others were smaller than Earth's moon. These discoveries challenged long-perceived notions of what a planet could be.The issue of a clear definition for planet came to a head in 2005 with the discovery of the trans-Neptunian object Eris, a body more massive than the smallest then-accepted planet, Pluto. In its 2006 response, the International Astronomical Union (IAU), recognised by astronomers as the world body responsible for resolving issues of nomenclature, released its decision on the matter. This definition, which applies only to the Solar System, states that a planet is a body that orbits the Sun, is massive enough for its own gravity to make it round, and has ""cleared its neighbourhood"" of smaller objects around its orbit. Under this new definition, Pluto and the other trans-Neptunian objects do not qualify as planets. The IAU's decision has not resolved all controversies, and while many scientists have accepted the definition, some in the astronomical community have rejected it outright.