PLANETARY MOTION G. Iafrate(a) and M. Ramella(a) (a) INAF
... retrograde motion. Ptolemy’s geocentric model could predict the planet positions (ephemerides) within few degrees and, since it worked sufficiently well, it was used for the next 500 years. The motion of planets becomes relatively easy to explain in an “heliocentric” model where the Sun is at the ce ...
... retrograde motion. Ptolemy’s geocentric model could predict the planet positions (ephemerides) within few degrees and, since it worked sufficiently well, it was used for the next 500 years. The motion of planets becomes relatively easy to explain in an “heliocentric” model where the Sun is at the ce ...
Activities, In the Footsteps of Galileo
... locate the Big Dipper. Then draw another imaginary line northeastward, this time beginning at the two stars at the back of the bowl. (A line drawn from the two stars at the front of the bowl intersects the North Star.) That straight line intersects Deneb, one of the stars in the Summer Triangle. In ...
... locate the Big Dipper. Then draw another imaginary line northeastward, this time beginning at the two stars at the back of the bowl. (A line drawn from the two stars at the front of the bowl intersects the North Star.) That straight line intersects Deneb, one of the stars in the Summer Triangle. In ...
The Motion of Celestial Bodies
... specific times given their orbital elements. The inverse problem is considerably more complex and can only be solved by iteration. Here we will limit ourselves to a sketch of how to proceed. The classical methods for orbit determination assume that at least three positions on the sky at different ti ...
... specific times given their orbital elements. The inverse problem is considerably more complex and can only be solved by iteration. Here we will limit ourselves to a sketch of how to proceed. The classical methods for orbit determination assume that at least three positions on the sky at different ti ...
Galileo`s Observation of Neptune 1612-1613
... “Most Serene Prince. Galileo Galilei most humbly prostrates himself before Your Highness, watching carefully, and with all spirit of willingness, not only to satisfy what concerns the reading of mathematics in the study of Padua, but to write of having decided to present to Your Highness a telescope ...
... “Most Serene Prince. Galileo Galilei most humbly prostrates himself before Your Highness, watching carefully, and with all spirit of willingness, not only to satisfy what concerns the reading of mathematics in the study of Padua, but to write of having decided to present to Your Highness a telescope ...
The Ceres Connection - MIT Lincoln Laboratory
... developed a numerical formula for planetary distances from the Sun. His calculations not only matched the distances of the known planets but also predicted orbital distances for several uncharted planets. Titius’s formula became known as the Titius-Bode law because German astronomer Johann Bode (998 ...
... developed a numerical formula for planetary distances from the Sun. His calculations not only matched the distances of the known planets but also predicted orbital distances for several uncharted planets. Titius’s formula became known as the Titius-Bode law because German astronomer Johann Bode (998 ...
Hurray! Holidays are here again. Name: Class: II / Sec _____
... Size: The Sun is wider than 100 Earths. Temperature: ~27,000,000°F in the center, ~10,000°F at the surface. So, that’s REALLY hot anywhere on the Sun! The Sun is made up of gas. The Sun is a star at the center of our solar system. It gives us light and heat. The Sun is bigger than any of the planets ...
... Size: The Sun is wider than 100 Earths. Temperature: ~27,000,000°F in the center, ~10,000°F at the surface. So, that’s REALLY hot anywhere on the Sun! The Sun is made up of gas. The Sun is a star at the center of our solar system. It gives us light and heat. The Sun is bigger than any of the planets ...
pdf file with complementary illustrations / animations
... For the last 20 years the giant planets known as hot Jupiters have presented astronomers with a puzzle. How did they settle into orbits 100 times closer to their host stars than our own Jupiter is to the Sun? An international team of astronomers has announced this week1 the discovery of a newborn ho ...
... For the last 20 years the giant planets known as hot Jupiters have presented astronomers with a puzzle. How did they settle into orbits 100 times closer to their host stars than our own Jupiter is to the Sun? An international team of astronomers has announced this week1 the discovery of a newborn ho ...
Sky Notes - February 2012 - North Devon Astronomical Society
... known. It’s brightness is somewhat variable, but with an average magnitude of +7.8, it is visible in binoculars and small telescopes. In addition, the constellation also contains the recently discovered Canis Major Dwarf Galaxy the closest satellite galaxy to Earth. However, it is obscured visually ...
... known. It’s brightness is somewhat variable, but with an average magnitude of +7.8, it is visible in binoculars and small telescopes. In addition, the constellation also contains the recently discovered Canis Major Dwarf Galaxy the closest satellite galaxy to Earth. However, it is obscured visually ...
planet
... rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its ...
... rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its ...
The Motion of Celestial Bodies
... This heralded the beginning of celestial mechanics which made it possible to accurately predict the motions of the celestial bodies. Newton showed that the gravitational attraction between two point masses, or finite bodies of spherical shape, leads to motions in orbits which are conic sections (see ...
... This heralded the beginning of celestial mechanics which made it possible to accurately predict the motions of the celestial bodies. Newton showed that the gravitational attraction between two point masses, or finite bodies of spherical shape, leads to motions in orbits which are conic sections (see ...
Exoplanets
... Earth as a comparison case. Then the constants will cancel out of the equation and we get a real equation for the temperature of the exoplanets (T / TEARTH)4 = (L / LSUN) × (dEARTH / d)2 where the planetary characteristics (the %'s) have been cancelled out because we assumed they were the same for t ...
... Earth as a comparison case. Then the constants will cancel out of the equation and we get a real equation for the temperature of the exoplanets (T / TEARTH)4 = (L / LSUN) × (dEARTH / d)2 where the planetary characteristics (the %'s) have been cancelled out because we assumed they were the same for t ...
In Retrospect: Kepler`s Astronomia Nova
... smaller and more distant planets, notably Earthlike bodies with one-year orbital periods around Sun-like stars. Even smaller planets orbiting near their stars will be detectable, as will more distant planets that are larger than Earth. Since Kepler deduced his laws, there have been many advances in ...
... smaller and more distant planets, notably Earthlike bodies with one-year orbital periods around Sun-like stars. Even smaller planets orbiting near their stars will be detectable, as will more distant planets that are larger than Earth. Since Kepler deduced his laws, there have been many advances in ...
this PDF file
... word of admiration for its campus, there may be quite a few who come away with the impression that all this must have cost an exhorbitant amount. People also wonder how the project could be completed so fast. Well, here is the inside story for what it is worth: Inclusive of the Akashganga, staff hou ...
... word of admiration for its campus, there may be quite a few who come away with the impression that all this must have cost an exhorbitant amount. People also wonder how the project could be completed so fast. Well, here is the inside story for what it is worth: Inclusive of the Akashganga, staff hou ...
The Solar System
... Venus (Greek: Aphrodite; Babylonian: Ishtar) is the goddess of love and beauty. The planet is so named probably because it is the brightest of the planets known to the ancients. (With a few exceptions, the surface features on Venus are named for female figures.) Venus has been known since prehistori ...
... Venus (Greek: Aphrodite; Babylonian: Ishtar) is the goddess of love and beauty. The planet is so named probably because it is the brightest of the planets known to the ancients. (With a few exceptions, the surface features on Venus are named for female figures.) Venus has been known since prehistori ...
Why is it so difficult to detect planets around other stars? Planet
... A. It has a planet orbiting at less than 1 AU. B. It has a planet orbiting at greater than 1 AU. C. The planet is much more massive than the Earth D. The planet is much less massive than the Earth E. We do not have enough information to know the planet’s orbital distance or mass. ...
... A. It has a planet orbiting at less than 1 AU. B. It has a planet orbiting at greater than 1 AU. C. The planet is much more massive than the Earth D. The planet is much less massive than the Earth E. We do not have enough information to know the planet’s orbital distance or mass. ...
Slide 1
... Jupiter. Rhea decided to wrap cloths around a stone for Cronus to swallow, and put Jupiter with two nymphs and a goat to take care of him. When he was old enough, he thanked the two nymphs by taking the goatís horn and turned it into a cornicopia, (named after the goat) with fruits inside and puttin ...
... Jupiter. Rhea decided to wrap cloths around a stone for Cronus to swallow, and put Jupiter with two nymphs and a goat to take care of him. When he was old enough, he thanked the two nymphs by taking the goatís horn and turned it into a cornicopia, (named after the goat) with fruits inside and puttin ...
The Dawn of Distant Skies
... atmospheres because the first handful of exoplanets were discovered indirectly, through the influence each had on its parent star. The planets themselves were invisible, but because each star and planet orbit a mutual center of gravity, the gravitational tug of the planet makes the star appear to wo ...
... atmospheres because the first handful of exoplanets were discovered indirectly, through the influence each had on its parent star. The planets themselves were invisible, but because each star and planet orbit a mutual center of gravity, the gravitational tug of the planet makes the star appear to wo ...
Is there life in space? Activity 4: Habitable Conditions
... orbit them and potential for that planet to house life forms. The models in this activity define the habitable zone as the zone in which liquid water is likely to be found. The models represent the liquid water possibility zone with a blue donut encircling the star. Students are encouraged to use th ...
... orbit them and potential for that planet to house life forms. The models in this activity define the habitable zone as the zone in which liquid water is likely to be found. The models represent the liquid water possibility zone with a blue donut encircling the star. Students are encouraged to use th ...
HAT-P-7: A RETROGRADE OR POLAR ORBIT, AND A THIRD BODY
... prograde, revolving in the same direction as the rotation of the Sun. This fact inspired the “nebular hypothesis” that the Sun and planets formed from a single spinning disk (Laplace 1796). One might also expect exoplanetary orbits to be well aligned with their parent stars, and indeed this is true ...
... prograde, revolving in the same direction as the rotation of the Sun. This fact inspired the “nebular hypothesis” that the Sun and planets formed from a single spinning disk (Laplace 1796). One might also expect exoplanetary orbits to be well aligned with their parent stars, and indeed this is true ...
Is anything out there revised
... First, let’s look at planets in our own Solar System to answer the question “Why is Earth the only planet that can support life?” 1. Collect information about planets in our solar system and fill out the table on the next page. You could use the planet info cards or research on the web or in the lib ...
... First, let’s look at planets in our own Solar System to answer the question “Why is Earth the only planet that can support life?” 1. Collect information about planets in our solar system and fill out the table on the next page. You could use the planet info cards or research on the web or in the lib ...
CLASSICAL KUIPER BELT OBJECTS (CKBOs)
... The dynamical situation is presently unclear, but the "moving planets" hypothesis appears as good as any, and better than most. A plot of the semi-major axes of the KBOs versus their orbital eccentricities clearly shows a non-random distribution. The Plutinos lie in a band at 39 AU, while most of th ...
... The dynamical situation is presently unclear, but the "moving planets" hypothesis appears as good as any, and better than most. A plot of the semi-major axes of the KBOs versus their orbital eccentricities clearly shows a non-random distribution. The Plutinos lie in a band at 39 AU, while most of th ...
Planetary exploration
... dwarf planet by July 2015. The spacecraft’s most prominent feature is the 2.1 m dish antenna, pointed towards a distant Earth at 7.5 billion km. ...
... dwarf planet by July 2015. The spacecraft’s most prominent feature is the 2.1 m dish antenna, pointed towards a distant Earth at 7.5 billion km. ...
Impossible planets.
... of the University of Western Ontario in London announced that the planet does not in fact exist. "It’s not there," he says categorically. "I’ve ruled it out." Gray’s claim is based on the way the planet was discovered. Mayor and Queloz never spotted the planet circling 51 Peg directly -- even an abs ...
... of the University of Western Ontario in London announced that the planet does not in fact exist. "It’s not there," he says categorically. "I’ve ruled it out." Gray’s claim is based on the way the planet was discovered. Mayor and Queloz never spotted the planet circling 51 Peg directly -- even an abs ...
Document
... Facts and photos used in the slideshow taken from: Sun: http://solarsystem.nasa.gov/planets/profile.cfm?Object=Sun&Display=OverviewLong Mercury: http://solarsystem.nasa.gov/planets/profile.cfm?Object=Mercury&Display=OverviewLong Venus: http://solarsystem.nasa.gov/planets/profile.cfm?Object=Venus&Dis ...
... Facts and photos used in the slideshow taken from: Sun: http://solarsystem.nasa.gov/planets/profile.cfm?Object=Sun&Display=OverviewLong Mercury: http://solarsystem.nasa.gov/planets/profile.cfm?Object=Mercury&Display=OverviewLong Venus: http://solarsystem.nasa.gov/planets/profile.cfm?Object=Venus&Dis ...
Discovery of Neptune
The planet Neptune was mathematically predicted before it was directly observed. With a prediction by Urbain Le Verrier, telescopic observations confirming the existence of a major planet were made on the night of September 23–24, 1846, at the Berlin Observatory, by astronomer Johann Gottfried Galle (assisted by Heinrich Louis d'Arrest), working from Le Verrier's calculations. It was a sensational moment of 19th century science and dramatic confirmation of Newtonian gravitational theory. In François Arago's apt phrase, Le Verrier had discovered a planet ""with the point of his pen"".In retrospect, after it was discovered it turned out it had been observed many times before but not recognized, and there were others who made various calculations about its location, which did not lead to its observation. By 1847 the planet Uranus had completed nearly one full orbit since its discovery by William Herschel in 1781, and astronomers had detected a series of irregularities in its path that could not be entirely explained by Newton's law of gravitation. These irregularities could, however, be resolved if the gravity of a farther, unknown planet were disturbing its path around the Sun. In 1845 astronomers Urbain Le Verrier in Paris and John Couch Adams in Cambridge separately began calculations to determine the nature and position of such a planet. Le Verrier's success also led to a tense international dispute over priority, because shortly after the discovery George Airy, at the time British Astronomer Royal, announced that Adams had also predicted the discovery of the planet. Nevertheless, the Royal Society awarded Le Verrier the Copley medal in 1846 for his achievement, without mention of Adams.The discovery of Neptune led to the discovery of its moon Triton by William Lassell just seventeen days later.