Power Point Version
... • Inclined (tilted) orbit to the ecliptic >5deg • Shines by reflected sunlight only and phase is related to where the sun is – 1st quarter always ¼ around the sky east of the sun (in the evening sky) – Full moon always opposite the sun and rises at sunset – 3rd quarter moon always 3/4ths the way aro ...
... • Inclined (tilted) orbit to the ecliptic >5deg • Shines by reflected sunlight only and phase is related to where the sun is – 1st quarter always ¼ around the sky east of the sun (in the evening sky) – Full moon always opposite the sun and rises at sunset – 3rd quarter moon always 3/4ths the way aro ...
Copernicus, Kepler, Galileo, Newton
... Supernovae, 1572, 1604 shook idea of heavens as unchanging. ...
... Supernovae, 1572, 1604 shook idea of heavens as unchanging. ...
Comet
... "For the first time, we have a direct handle on the population of comets in this outer region. The solar system just got a lot more interesting," Cochran says. "We now know where these short-period comets formed, and we have a context for their role in the solar system's evolution." The existence of ...
... "For the first time, we have a direct handle on the population of comets in this outer region. The solar system just got a lot more interesting," Cochran says. "We now know where these short-period comets formed, and we have a context for their role in the solar system's evolution." The existence of ...
The Planets
... Pluto is usually the farthest planet from the Sun, however its orbit sometimes takes it inside Neptune's orbit. From 1979 until 1999 Neptune was the outermost planet. Now, however, Pluto is the outermost planet. The only problem is, that Pluto is no longer considered one of the nine planets. ...
... Pluto is usually the farthest planet from the Sun, however its orbit sometimes takes it inside Neptune's orbit. From 1979 until 1999 Neptune was the outermost planet. Now, however, Pluto is the outermost planet. The only problem is, that Pluto is no longer considered one of the nine planets. ...
ISP205L Visions of the Universe Laboratory
... Moon phases. Predicting them. Why we always see one side. Eclipses. ...
... Moon phases. Predicting them. Why we always see one side. Eclipses. ...
Lecture 39: Life in the Universe The Main Point Simple Life vs
... N = Number of civilizations in the Galaxy capable of communicating with us R* = The rate of star formation in the Galaxy (stars/year) fs = fraction of stars that are Sun-like Np = number of planets per star fe = fraction of "environmentally correct" planets fL = fraction of planets where life develo ...
... N = Number of civilizations in the Galaxy capable of communicating with us R* = The rate of star formation in the Galaxy (stars/year) fs = fraction of stars that are Sun-like Np = number of planets per star fe = fraction of "environmentally correct" planets fL = fraction of planets where life develo ...
What is a pulsar planet ? How do planets form ?
... When do planets form ? before explosions ? after explosions ? ...
... When do planets form ? before explosions ? after explosions ? ...
Extra Credit Assignment (Maximum of 75 points)
... imagination and pretend that you are trying to sell people on the idea that your planet is “the place to live.” You are to create a brochure that someone thinking about moving to your community would find interesting. Your first step is to research your planet and familiarize yourself with its chara ...
... imagination and pretend that you are trying to sell people on the idea that your planet is “the place to live.” You are to create a brochure that someone thinking about moving to your community would find interesting. Your first step is to research your planet and familiarize yourself with its chara ...
The Solar System
... Observing the Solar System The Sun The Inner Planets The Outer Planets Comets, Asteroids, and Meteors Is There Life Beyond Earth? ...
... Observing the Solar System The Sun The Inner Planets The Outer Planets Comets, Asteroids, and Meteors Is There Life Beyond Earth? ...
Earth in the Universe Grade One
... their moons—that are held in orbit around the sun by its gravitational pull on them. This system appears to have formed from a disk of dust and gas, drawn together by gravity. Earth and the moon, sun, and planets have predictable patterns of movement. These patterns, which are explainable by gravita ...
... their moons—that are held in orbit around the sun by its gravitational pull on them. This system appears to have formed from a disk of dust and gas, drawn together by gravity. Earth and the moon, sun, and planets have predictable patterns of movement. These patterns, which are explainable by gravita ...
File
... – Our solar system is full of planets, moons, asteroids and comets, all of which revolve around the Sun at the center. – When a star forms from a nebula, gravity pulls most of the material into the new star, but some may also clump together to form objects in a solar system. ...
... – Our solar system is full of planets, moons, asteroids and comets, all of which revolve around the Sun at the center. – When a star forms from a nebula, gravity pulls most of the material into the new star, but some may also clump together to form objects in a solar system. ...
Apparent motion
... • Zenith – highest point on celestial sphere, directly above observer’s head • Apparent motion – the motion an object appears to have, but which isn’t real ...
... • Zenith – highest point on celestial sphere, directly above observer’s head • Apparent motion – the motion an object appears to have, but which isn’t real ...
ASTR120 Homework 6 − Solutions
... a. Since Enceladus and Dione have a 1 : 2 ratio of orbital periods, the time between successive oppositions would be the orbital period of Dione -- 65.7 hours b. For this part, we want to use the small angle formula. According to the text, the linear diameter of Dione is 1.0 x 106 m. Enceladus is 2. ...
... a. Since Enceladus and Dione have a 1 : 2 ratio of orbital periods, the time between successive oppositions would be the orbital period of Dione -- 65.7 hours b. For this part, we want to use the small angle formula. According to the text, the linear diameter of Dione is 1.0 x 106 m. Enceladus is 2. ...
Great Galaxies 5 - School Performance Tours
... 2018 31st Jan is the next total lunar eclipse and a second one in the same year on the 28th July there is another Total eclipse, but this second one will not been seen well in Australia PLEASE stress the student they can look at a lunar eclipse but they MUST NOT look at a solar eclipse ...
... 2018 31st Jan is the next total lunar eclipse and a second one in the same year on the 28th July there is another Total eclipse, but this second one will not been seen well in Australia PLEASE stress the student they can look at a lunar eclipse but they MUST NOT look at a solar eclipse ...
Lunation” Astronomy picture of the day August 29th, 2004
... Ptolemy, who had the Earth offset as an equant (not centered in circular orbits ...
... Ptolemy, who had the Earth offset as an equant (not centered in circular orbits ...
Assignment 2 - utoledo.edu
... ____ 33. In Ptolemy's system the planets orbit the Earth and not the Sun. How did the system explain the retrograde motion of planets like Jupiter? a. the planets were not moving along the ecliptic but all over the celestial sphere b. the planets moved in very elongated ellipses, and their speed i ...
... ____ 33. In Ptolemy's system the planets orbit the Earth and not the Sun. How did the system explain the retrograde motion of planets like Jupiter? a. the planets were not moving along the ecliptic but all over the celestial sphere b. the planets moved in very elongated ellipses, and their speed i ...
Lecture 4 - Orbits of the planets
... far from the Sun. • In Ptolemy’s model, Venus and the Sun must move together with the epicycle of Venus centered on a line between the Earth and the Sun • Then, Venus can never be the opposite side of the Sun from the Earth, so it can never have gibbous phases – no “full Venus”. ...
... far from the Sun. • In Ptolemy’s model, Venus and the Sun must move together with the epicycle of Venus centered on a line between the Earth and the Sun • Then, Venus can never be the opposite side of the Sun from the Earth, so it can never have gibbous phases – no “full Venus”. ...
Today`s Powerpoint
... Rocky fragments ranging from 940 km across (Ceres) to < 0.1 km. 100,000 known. Most in Asteroid Belt, at about 2-3 AU, between Mars and Jupiter. The Trojan asteroids orbit 60 o ahead of and behind Jupiter. Some asteroids cross Earth's orbit. Their orbits were probably disrupted by Jupiter's gravity. ...
... Rocky fragments ranging from 940 km across (Ceres) to < 0.1 km. 100,000 known. Most in Asteroid Belt, at about 2-3 AU, between Mars and Jupiter. The Trojan asteroids orbit 60 o ahead of and behind Jupiter. Some asteroids cross Earth's orbit. Their orbits were probably disrupted by Jupiter's gravity. ...
Second Lecture - University of Maryland Astronomy
... • Last of the great “naked eye” observers • Made planetary observations much more accurate than any previous… first to estimate error bar of a measurement • Observed “new star” (Tycho’s supernova; 1572) • Demonstrated that comet was beyond Moon’s orbit • From parallax observations of "new star", com ...
... • Last of the great “naked eye” observers • Made planetary observations much more accurate than any previous… first to estimate error bar of a measurement • Observed “new star” (Tycho’s supernova; 1572) • Demonstrated that comet was beyond Moon’s orbit • From parallax observations of "new star", com ...
The mass of the Moon is 1/81 of the mass of the Earth. Compared to
... Compared to the Earth, Planet X has twice the mass and twice the radius. This means that compared to the amount of energy required to move an object from the Earth’s surface to infinity, the amount of energy required to move that same object from Planet X’s surface to infinity is A. 4 times as much. ...
... Compared to the Earth, Planet X has twice the mass and twice the radius. This means that compared to the amount of energy required to move an object from the Earth’s surface to infinity, the amount of energy required to move that same object from Planet X’s surface to infinity is A. 4 times as much. ...
The mass of the Moon is 1/81 of the mass of the Earth. Compared to
... A planet (P) is moving around the Sun (S) in an elliptical orbit. As the planet moves from aphelion to perihelion, the Sun’s gravitational force A. does positive work on the planet. B. does negative work on the planet. C. does positive work on the planet during part of the motion and negative work d ...
... A planet (P) is moving around the Sun (S) in an elliptical orbit. As the planet moves from aphelion to perihelion, the Sun’s gravitational force A. does positive work on the planet. B. does negative work on the planet. C. does positive work on the planet during part of the motion and negative work d ...
speed
... Compared to the Earth, Planet X has twice the mass and twice the radius. This means that compared to the amount of energy required to move an object from the Earth’s surface to infinity, the amount of energy required to move that same object from Planet X’s surface to infinity is A. 4 times as much. ...
... Compared to the Earth, Planet X has twice the mass and twice the radius. This means that compared to the amount of energy required to move an object from the Earth’s surface to infinity, the amount of energy required to move that same object from Planet X’s surface to infinity is A. 4 times as much. ...
Late Heavy Bombardment
The Late Heavy Bombardment (abbreviated LHB and also known as the lunar cataclysm) is a hypothetical event thought to have occurred approximately 4.1 to 3.8 billion years (Ga) ago, corresponding to the Neohadean and Eoarchean eras on Earth. During this interval, a disproportionately large number of asteroids apparently collided with the early terrestrial planets in the inner Solar System, including Mercury, Venus, Earth, and Mars. The LHB happened after the Earth and other rocky planets had formed and accreted most of their mass, but still quite early in Earth's history.Evidence for the LHB derives from lunar samples brought back by the Apollo astronauts. Isotopic dating of Moon rocks implies that most impact melts occurred in a rather narrow interval of time. Several hypotheses are now offered to explain the apparent spike in the flux of impactors (i.e. asteroids and comets) in the inner Solar System, but no consensus yet exists. The Nice model is popular among planetary scientists; it postulates that the gas giant planets underwent orbital migration and scattered objects in the asteroid and/or Kuiper belts into eccentric orbits, and thereby into the path of the terrestrial planets. Other researchers argue that the lunar sample data do not require a cataclysmic cratering event near 3.9 Ga, and that the apparent clustering of impact melt ages near this time is an artifact of sampling materials retrieved from a single large impact basin. They also note that the rate of impact cratering could be significantly different between the outer and inner zones of the Solar System.