The Cosmic Perspective Asteroids, Comets, and Dwarf Planets
... a) Meteor showers are caused by the passage of Earth through the debris left by a comet in its orbit. b) Meteor showers are caused by the passage of Earth through the dust tail of a comet. c) Meteor showers are caused by the passage of Earth through a debris cloud from an asteroid collision. d) ...
... a) Meteor showers are caused by the passage of Earth through the debris left by a comet in its orbit. b) Meteor showers are caused by the passage of Earth through the dust tail of a comet. c) Meteor showers are caused by the passage of Earth through a debris cloud from an asteroid collision. d) ...
ELIZABETH KLARER: UFO Contactee and Space
... components of Alpha Centauri. These are the two larger stars, and these rotate about each other. Selo is closer to them in that vicinity, therefore Selo would receive greater intensity of radiation from these double stars. Proxima Centauri is very much farther away, but it still makes up a triplet s ...
... components of Alpha Centauri. These are the two larger stars, and these rotate about each other. Selo is closer to them in that vicinity, therefore Selo would receive greater intensity of radiation from these double stars. Proxima Centauri is very much farther away, but it still makes up a triplet s ...
Collisions with Comets and Asteroids
... In the early 1970s a 0.46-meter photographic camera at the Palomar Observatory in southern California was dedicated to the search for near-earth objects. Eleanor Helin of the Jet Propulsion Laboratory in Pasadena, Calif., led one of the teams of astronomers, and Eugene M. and Carolyn S. Shoemaker of ...
... In the early 1970s a 0.46-meter photographic camera at the Palomar Observatory in southern California was dedicated to the search for near-earth objects. Eleanor Helin of the Jet Propulsion Laboratory in Pasadena, Calif., led one of the teams of astronomers, and Eugene M. and Carolyn S. Shoemaker of ...
Dark Matter - Berkeley Center for Cosmological Physics
... Hold the center tube so that the washers hang downwards and the stopper will swing in a horizontal circle when you exert a small force. Keep the stopper swinging with the minimum consistent force you can. a) Explain how this represents a planet’s motion and the forces that cause it. b) How can you m ...
... Hold the center tube so that the washers hang downwards and the stopper will swing in a horizontal circle when you exert a small force. Keep the stopper swinging with the minimum consistent force you can. a) Explain how this represents a planet’s motion and the forces that cause it. b) How can you m ...
Introduction This book will teach you all you need to know about the
... characteristic is that a planet must have enough mass to make itself round. The second is that it must orbit the sun. The third and final characteristic is that it must clear its neighborhood of everything. That means that when asteroids hit earth or other planets that is the planets way of clearing ...
... characteristic is that a planet must have enough mass to make itself round. The second is that it must orbit the sun. The third and final characteristic is that it must clear its neighborhood of everything. That means that when asteroids hit earth or other planets that is the planets way of clearing ...
Lecture 6 Recall: Geocentric Model of Solar System
... Argument against heliocentric • Tycho Brahe (1570) – pointed out that if Earth moves, and the stars are not infinitely far away, their angular arrangement should change slightly as Earth goes from side to side of Sun. – He found no such effect (to < 10 arcmin), so made an alternate model in which E ...
... Argument against heliocentric • Tycho Brahe (1570) – pointed out that if Earth moves, and the stars are not infinitely far away, their angular arrangement should change slightly as Earth goes from side to side of Sun. – He found no such effect (to < 10 arcmin), so made an alternate model in which E ...
the rest of the univ..
... Spectra and photometric data have been obtained for 5145 Pholus. Its albedo is very low (less than 0.1). Its spectra indicates the presence of organic compounds, which are often very dark (e.g. the nucleus of Comet Halley). Some believe that Triton, Pluto and its moon Charon are merely the largest e ...
... Spectra and photometric data have been obtained for 5145 Pholus. Its albedo is very low (less than 0.1). Its spectra indicates the presence of organic compounds, which are often very dark (e.g. the nucleus of Comet Halley). Some believe that Triton, Pluto and its moon Charon are merely the largest e ...
STANDARD SET 4. Earth Sciences
... The Sun is about one million times the volume of Earth. Its mass can be calculated from the shapes of the planetary orbits, which result from the gravitational attraction between the Sun and its planets. The fusion of hydrogen to helium produces most of the Sun’s energy. 5. b. Students know the sol ...
... The Sun is about one million times the volume of Earth. Its mass can be calculated from the shapes of the planetary orbits, which result from the gravitational attraction between the Sun and its planets. The fusion of hydrogen to helium produces most of the Sun’s energy. 5. b. Students know the sol ...
What is it? - Carmenes - Calar Alto Observatory
... highly-stabilised spectroscopy for measuring the radial velocity reflex motion of the host star induced by unseen companions, the minimum mass of the newly discovered exoplanets is getting lower and lower. However, in spite of the efforts of astronomers, we have not been able to detect yet the first ...
... highly-stabilised spectroscopy for measuring the radial velocity reflex motion of the host star induced by unseen companions, the minimum mass of the newly discovered exoplanets is getting lower and lower. However, in spite of the efforts of astronomers, we have not been able to detect yet the first ...
On the irrelevance of being a PLUTO! Size Scale of Stars and Planets
... • The real defining part was: – It should be big enough to achieve a nearly spherical shape. – Mass of at least 5x1020 Kg and radius of 800 km (for rocky bodies) is required for this. – Pluto seemed to fit these criteria and was branded a planet. This property was based more on physics, nostalgia, h ...
... • The real defining part was: – It should be big enough to achieve a nearly spherical shape. – Mass of at least 5x1020 Kg and radius of 800 km (for rocky bodies) is required for this. – Pluto seemed to fit these criteria and was branded a planet. This property was based more on physics, nostalgia, h ...
Loops of Jupiter
... 3. The retrograde motion continues. Earth is in a straight line between the Sun and the planet (the planet is in opposition to the Sun). The distance between the planet and Earth is the smallest and equal the difference of the planet’s and the Earth’s radii. 4. The retrograde movement stops. The pla ...
... 3. The retrograde motion continues. Earth is in a straight line between the Sun and the planet (the planet is in opposition to the Sun). The distance between the planet and Earth is the smallest and equal the difference of the planet’s and the Earth’s radii. 4. The retrograde movement stops. The pla ...
ASTR1010 – Lecture 2 - University of Colorado Boulder
... • Read TCP2 for Tuesday; JiTT2 Due Tuesday at 9am! • Sample Ch2 reading quiz questions: – What moon phase is necessary for an eclipse of the Sun? Of the Moon? – What is stellar parallax? – What is retrograde motion? – What are circumpolar stars? ...
... • Read TCP2 for Tuesday; JiTT2 Due Tuesday at 9am! • Sample Ch2 reading quiz questions: – What moon phase is necessary for an eclipse of the Sun? Of the Moon? – What is stellar parallax? – What is retrograde motion? – What are circumpolar stars? ...
The Solar System
... and the patron of the Roman state. Zeus was the son of Cronus (Saturn). Jupiter is the fourth brightest object in the sky (after the Sun, the Moon and Venus). It has been known since prehistoric times as a bright "wandering star". But in 1610 when Galileo first pointed a telescope at the sky he disc ...
... and the patron of the Roman state. Zeus was the son of Cronus (Saturn). Jupiter is the fourth brightest object in the sky (after the Sun, the Moon and Venus). It has been known since prehistoric times as a bright "wandering star". But in 1610 when Galileo first pointed a telescope at the sky he disc ...
Chapter 6
... Mars, Jupiter, and Saturn—in the night sky. • (Sec. 2.2) They also knew of two other types of heavenly objects that were clearly neither stars nor planets. Comets appear as long, wispy strands of light in the night sky that remain visible for periods of up to several weeks and then slowly fade from ...
... Mars, Jupiter, and Saturn—in the night sky. • (Sec. 2.2) They also knew of two other types of heavenly objects that were clearly neither stars nor planets. Comets appear as long, wispy strands of light in the night sky that remain visible for periods of up to several weeks and then slowly fade from ...
Other Bodies in the Solar System
... discovered the planet “Ceres” • William Herschel categorized Ceres and the other dwarf planets as asteroids , “star like” http://upload.wikimedia. org/wikipedia/commons/ 9/92/Giuseppe_Piazzi.jpg ...
... discovered the planet “Ceres” • William Herschel categorized Ceres and the other dwarf planets as asteroids , “star like” http://upload.wikimedia. org/wikipedia/commons/ 9/92/Giuseppe_Piazzi.jpg ...
Terrestrial planet formation in exoplanetary systems with a giant
... only 0.86 Jovian masses (Hatzes et al. 2000). On the other hand, it is on a highly eccentric orbit (e = 0.608) that could reinforce the resonant perturbations on the planetesimal disk. We should stress that there are still uncertainties about the reality of the planet around Eps. Eridani due to the ...
... only 0.86 Jovian masses (Hatzes et al. 2000). On the other hand, it is on a highly eccentric orbit (e = 0.608) that could reinforce the resonant perturbations on the planetesimal disk. We should stress that there are still uncertainties about the reality of the planet around Eps. Eridani due to the ...
The barycentric motion of exoplanet host stars
... motion of the star about the system barycentre can be approximated by the linear superposition of the reflex motions due to the Keplerian orbit of each individual planet around that star-planet barycentre. If the planets have periods or close approaches such that they are dynamically interacting, th ...
... motion of the star about the system barycentre can be approximated by the linear superposition of the reflex motions due to the Keplerian orbit of each individual planet around that star-planet barycentre. If the planets have periods or close approaches such that they are dynamically interacting, th ...
Presentation
... • The distances to the nearest stars are much greater than the distances from a star to its planets. • The angle between a star and its planets, as seen from Earth, is too small to resolve with our biggest telescopes. ...
... • The distances to the nearest stars are much greater than the distances from a star to its planets. • The angle between a star and its planets, as seen from Earth, is too small to resolve with our biggest telescopes. ...
lec01_26sep2011
... have surrounded the sun like an atmosphere. The consideration of the planetary motions thus leads us to think that, by virtue of an excessive heat, the solar atmosphere originally extended beyond the orbits of all the planets and that it progressively shrank to its present limits. This might have oc ...
... have surrounded the sun like an atmosphere. The consideration of the planetary motions thus leads us to think that, by virtue of an excessive heat, the solar atmosphere originally extended beyond the orbits of all the planets and that it progressively shrank to its present limits. This might have oc ...
UNIT LESSON PLAN
... d. The sun spins, has several surface features, and has a cycle of sunspots, which help us to see the sun rotate e. The sun has layers just like the Earth -Three inner layers: Core, radiative zone, and convection zone -Three atmosphere layers: photosphere, chromosphere, and corona f. A satellite cal ...
... d. The sun spins, has several surface features, and has a cycle of sunspots, which help us to see the sun rotate e. The sun has layers just like the Earth -Three inner layers: Core, radiative zone, and convection zone -Three atmosphere layers: photosphere, chromosphere, and corona f. A satellite cal ...
CHAPTER 20
... gave us much new information about the nature of Neptune’s atmosphere. Although the composition of Neptune’s atmosphere is nearly the same as that of Uranus’s atmosphere, Neptune’s atmosphere contains belts of clouds that are much more visible. At the time of Voyager 2’s visit, Neptune had a Great D ...
... gave us much new information about the nature of Neptune’s atmosphere. Although the composition of Neptune’s atmosphere is nearly the same as that of Uranus’s atmosphere, Neptune’s atmosphere contains belts of clouds that are much more visible. At the time of Voyager 2’s visit, Neptune had a Great D ...
CHAPTER 20
... gave us much new information about the nature of Neptune’s atmosphere. Although the composition of Neptune’s atmosphere is nearly the same as that of Uranus’s atmosphere, Neptune’s atmosphere contains belts of clouds that are much more visible. At the time of Voyager 2’s visit, Neptune had a Great D ...
... gave us much new information about the nature of Neptune’s atmosphere. Although the composition of Neptune’s atmosphere is nearly the same as that of Uranus’s atmosphere, Neptune’s atmosphere contains belts of clouds that are much more visible. At the time of Voyager 2’s visit, Neptune had a Great D ...
Planets beyond Neptune
Following the discovery of the planet Neptune in 1846, there was considerable speculation that another planet might exist beyond its orbit. The search began in the mid-19th century and culminated at the start of the 20th with Percival Lowell's quest for Planet X. Lowell proposed the Planet X hypothesis to explain apparent discrepancies in the orbits of the giant planets, particularly Uranus and Neptune, speculating that the gravity of a large unseen ninth planet could have perturbed Uranus enough to account for the irregularities.Clyde Tombaugh's discovery of Pluto in 1930 appeared to validate Lowell's hypothesis, and Pluto was officially named the ninth planet. In 1978, Pluto was conclusively determined to be too small for its gravity to affect the giant planets, resulting in a brief search for a tenth planet. The search was largely abandoned in the early 1990s, when a study of measurements made by the Voyager 2 spacecraft found that the irregularities observed in Uranus's orbit were due to a slight overestimation of Neptune's mass. After 1992, the discovery of numerous small icy objects with similar or even wider orbits than Pluto led to a debate over whether Pluto should remain a planet, or whether it and its neighbours should, like the asteroids, be given their own separate classification. Although a number of the larger members of this group were initially described as planets, in 2006 the International Astronomical Union reclassified Pluto and its largest neighbours as dwarf planets, leaving Neptune the farthest known planet in the Solar System.Today, the astronomical community widely agrees that Planet X, as originally envisioned, does not exist, but the concept of Planet X has been revived by a number of astronomers to explain other anomalies observed in the outer Solar System. In popular culture, and even among some astronomers, Planet X has become a stand-in term for any undiscovered planet in the outer Solar System, regardless of its relationship to Lowell's hypothesis. Other trans-Neptunian planets have also been suggested, based on different evidence. As of March 2014, observations with the WISE telescope have ruled out the possibility of a Saturn-sized object out to 10,000 AU, and a Jupiter-sized or larger object out to 26,000 AU.