Search for Life in the Universe
... – Semi-major axis: minimum:median:maximum = 0.02:1.0:5.9 AU – Solar system: Mercury:Earth:Jupiter = 0.4:1.0:5.2 AU ...
... – Semi-major axis: minimum:median:maximum = 0.02:1.0:5.9 AU – Solar system: Mercury:Earth:Jupiter = 0.4:1.0:5.2 AU ...
Lecture 1: Properties of the Solar System
... o Convenient because the density of water is 1 g cm-3. o To determine volume, need: 1. Distance from Earth. 2. Angular extent of the planet. o To determine the mass (from Kepler’s 3rd Law) we need: ...
... o Convenient because the density of water is 1 g cm-3. o To determine volume, need: 1. Distance from Earth. 2. Angular extent of the planet. o To determine the mass (from Kepler’s 3rd Law) we need: ...
PH709-10-asn1ans
... and it's given by the time it takes the lens (moving at speed v) to traverse an Einstein radius. ...
... and it's given by the time it takes the lens (moving at speed v) to traverse an Einstein radius. ...
Document
... • Aristotle observes that during lunar eclipses the Earth’s shadow on the moon is curved • He assumes it will be curved for all eclipses • A hypothesis that explains this: the earth is round • A prediction of this theory is that the location of the stars in the sky should be different for observers ...
... • Aristotle observes that during lunar eclipses the Earth’s shadow on the moon is curved • He assumes it will be curved for all eclipses • A hypothesis that explains this: the earth is round • A prediction of this theory is that the location of the stars in the sky should be different for observers ...
The jovian moons
... • The 2nd largest moon in the solar system • Larger than both Pluto and Mercury • The only moon in the solar system with a substantial atmosphere • Mostly nitrogen (like Earth!) • Atmospheric pressure = 1.5 x Earth’s • Wouldn’t need a space suit! (cold though…) ...
... • The 2nd largest moon in the solar system • Larger than both Pluto and Mercury • The only moon in the solar system with a substantial atmosphere • Mostly nitrogen (like Earth!) • Atmospheric pressure = 1.5 x Earth’s • Wouldn’t need a space suit! (cold though…) ...
Asteroids,Comets, Meteor ppt.
... • Kuiper Belt objects have been found that approach Pluto’s size. • Kuiper Belt comets have similar orbital resonances with Neptune. • Kuiper Belt comets can have moons. • Triton (a captured moon) is even larger than Pluto. ...
... • Kuiper Belt objects have been found that approach Pluto’s size. • Kuiper Belt comets have similar orbital resonances with Neptune. • Kuiper Belt comets can have moons. • Triton (a captured moon) is even larger than Pluto. ...
October 3
... 5. The Planets’ orbital distance from the Sun follows a regular spacing. Titius-Bode rule Write down 0, 3, 6, 12, … each number, after the first, being double the previous value. Add 4 to each and divide by 10. ...
... 5. The Planets’ orbital distance from the Sun follows a regular spacing. Titius-Bode rule Write down 0, 3, 6, 12, … each number, after the first, being double the previous value. Add 4 to each and divide by 10. ...
Asteroids,Comets, Meteor ppt.
... • Kuiper Belt objects have been found that approach Pluto’s size. • Kuiper Belt comets have similar orbital resonances with Neptune. • Kuiper Belt comets can have moons. • Triton (a captured moon) is even larger than Pluto. ...
... • Kuiper Belt objects have been found that approach Pluto’s size. • Kuiper Belt comets have similar orbital resonances with Neptune. • Kuiper Belt comets can have moons. • Triton (a captured moon) is even larger than Pluto. ...
Week 1 Review January 25
... Due by: _______________________________E S Week 1(January 25 –February 2, 2017) review 13. How could one use barycenter to determine if a star is accompanied by a planet? One would look for the wobbling of a star Mark each statement as C for Corrrect or INC for incorrect. Change the boldface word(s) ...
... Due by: _______________________________E S Week 1(January 25 –February 2, 2017) review 13. How could one use barycenter to determine if a star is accompanied by a planet? One would look for the wobbling of a star Mark each statement as C for Corrrect or INC for incorrect. Change the boldface word(s) ...
Session 4 – Nebular Theory
... smoothest body in our solar system They are both Galilean moons of Jupiter and are right next door to each other… They should have similar history of comets/asteroids ...
... smoothest body in our solar system They are both Galilean moons of Jupiter and are right next door to each other… They should have similar history of comets/asteroids ...
Astronomy Club
... But comets emerging out of the ‘Ourt Cloud’ have disordered orbit. Comets are mainly of two types. Those of the first type take more than 200 years for revolution around the sun and others takes less than 20 years. 'Ourt Cloud’ hypothesis gives a correct explanation about the orbit's inclination and ...
... But comets emerging out of the ‘Ourt Cloud’ have disordered orbit. Comets are mainly of two types. Those of the first type take more than 200 years for revolution around the sun and others takes less than 20 years. 'Ourt Cloud’ hypothesis gives a correct explanation about the orbit's inclination and ...
Ellipses, Parallax, and Retrograde Motion – Study Guide
... relation to retrograde motion or parallax. Apparent means what we see when we make our observations. Actual means what really happens as if observed from outside the solar system. For example, stars do NOT really shift in the sky as Earth orbits Sun (parallax) OR planets do NOT really change course ...
... relation to retrograde motion or parallax. Apparent means what we see when we make our observations. Actual means what really happens as if observed from outside the solar system. For example, stars do NOT really shift in the sky as Earth orbits Sun (parallax) OR planets do NOT really change course ...
NATS1311_112008_bw
... inner planets, or get ejected from solar system are the present-day asteroids. Most inhabit the asteroid belt between Mars & Jupiter. Jupiter’s gravity prevented a planet from forming there. ...
... inner planets, or get ejected from solar system are the present-day asteroids. Most inhabit the asteroid belt between Mars & Jupiter. Jupiter’s gravity prevented a planet from forming there. ...
Kepler’s Laws—20 Jan • Homework 1
... 2. Winter is a few days shorter than summer for us in the northern hemisphere. Therefore Earth is at A, B, C, or D in January? • What do I need to find out before I can answer the question? ...
... 2. Winter is a few days shorter than summer for us in the northern hemisphere. Therefore Earth is at A, B, C, or D in January? • What do I need to find out before I can answer the question? ...
February 2007
... planets are far apart, not bunched together orbits of planets are nearly circular orbits of planets lie mostly in a single plane directions of revolution of planets about Sun is the same, and is the same as the direction of the Sun's rotation directions of rotation of planets about their axes is als ...
... planets are far apart, not bunched together orbits of planets are nearly circular orbits of planets lie mostly in a single plane directions of revolution of planets about Sun is the same, and is the same as the direction of the Sun's rotation directions of rotation of planets about their axes is als ...
Document
... Cratering on planets and satellites is the result of impacts from interplanetary debris • When an asteroid, comet, or meteoroid collides with the surface of a terrestrial planet or satellite, the result is an impact crater • Geologic activity renews the surface and erases craters, so a terrestrial ...
... Cratering on planets and satellites is the result of impacts from interplanetary debris • When an asteroid, comet, or meteoroid collides with the surface of a terrestrial planet or satellite, the result is an impact crater • Geologic activity renews the surface and erases craters, so a terrestrial ...
Document
... Uranus has the coldest temperature of -224⁰C Uranus is tipped over on its side with an axial tilt of 98⁰. It is described as “Rolling around the Sun on it’s side.” Uranus Has 27 moons and 13 rings. ...
... Uranus has the coldest temperature of -224⁰C Uranus is tipped over on its side with an axial tilt of 98⁰. It is described as “Rolling around the Sun on it’s side.” Uranus Has 27 moons and 13 rings. ...
Voir le texte intégral : Build a planet
... approaches the Sun, it gets warmer, making the ice and other volatile materials evaporate. The resultant jets of vapour propel dust off into space, where solar radiation and the solar wind blow the lost material into long, spectacular tails, which we see in the sky as a comet. Each time the object p ...
... approaches the Sun, it gets warmer, making the ice and other volatile materials evaporate. The resultant jets of vapour propel dust off into space, where solar radiation and the solar wind blow the lost material into long, spectacular tails, which we see in the sky as a comet. Each time the object p ...
History of astronomy - Part I.
... The word paradigm means a fundamental idea which has many implications. In a way it is an assumption, but one that results in specific predictions, which we can test and confirm or refute. It has become a commonly used word as a result of the success of Thomas Kuhn's 1962 book The Structure of Scie ...
... The word paradigm means a fundamental idea which has many implications. In a way it is an assumption, but one that results in specific predictions, which we can test and confirm or refute. It has become a commonly used word as a result of the success of Thomas Kuhn's 1962 book The Structure of Scie ...
Astronomy - cloudfront.net
... Based on our understanding of our own solar system, which of the following would be most surprising to observe in an extrasolar system of planets? A. The planets nearest to the star have a lower density than the planets farther out. B. Several planets show large tilts of their rotation axis compare ...
... Based on our understanding of our own solar system, which of the following would be most surprising to observe in an extrasolar system of planets? A. The planets nearest to the star have a lower density than the planets farther out. B. Several planets show large tilts of their rotation axis compare ...
Space studies
... move around its orbit in about 116 days which is much faster than any other planet. This rapid motion may have led to it being named after the roman diety Mercury. The fast flying messenger to the gods. Because it has no atmosphere to retain heat Mercury's surfaces experience the greatest temperatur ...
... move around its orbit in about 116 days which is much faster than any other planet. This rapid motion may have led to it being named after the roman diety Mercury. The fast flying messenger to the gods. Because it has no atmosphere to retain heat Mercury's surfaces experience the greatest temperatur ...
Lecture 36: Strange New Worlds
... Orbital Periods < 10 days Inside the orbit of Mercury Densities like Jupiter and Saturn, so they are gas giants. Selection effect? How does a Jupiter-size gas planet get so close to its parent star? ...
... Orbital Periods < 10 days Inside the orbit of Mercury Densities like Jupiter and Saturn, so they are gas giants. Selection effect? How does a Jupiter-size gas planet get so close to its parent star? ...
Stars, Planets, Moons, too Doing the Solar System
... It provides energy for everyone. The energy comes in the form of heat and light, It’s a ball of gases that burns just right. ...
... It provides energy for everyone. The energy comes in the form of heat and light, It’s a ball of gases that burns just right. ...
Jupiter, the fifth planet from the sun and the largest planet in our
... Like other members of the Kuiper Belt, it is composed of rock and ice and is relatively small. It has a highly eccentric and inclined orbit around the Sun which makes it periodically come closer to the Sun than Neptune. Pluto and its largest moon, Charon, are sometimes classified as a binary system. ...
... Like other members of the Kuiper Belt, it is composed of rock and ice and is relatively small. It has a highly eccentric and inclined orbit around the Sun which makes it periodically come closer to the Sun than Neptune. Pluto and its largest moon, Charon, are sometimes classified as a binary system. ...
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.