Astronomy Observations3
... counterclockwise circles between the northern horizon and Polaris and never set. ...
... counterclockwise circles between the northern horizon and Polaris and never set. ...
HW2_Answers
... 3. Kepler found that the farther a planet was from the Sun, the slower it moved in its orbit. Use what you have learned about an orbit and the Newton’s law of Gravity to explain why Jupiter cannot orbit the Sun as fast as the Earth. Jupiter is farther from the Sun than the Earth. Because of this, th ...
... 3. Kepler found that the farther a planet was from the Sun, the slower it moved in its orbit. Use what you have learned about an orbit and the Newton’s law of Gravity to explain why Jupiter cannot orbit the Sun as fast as the Earth. Jupiter is farther from the Sun than the Earth. Because of this, th ...
Mountain Skies - Pisgah Astronomical Research Institute
... The planets: They’re back! All five of the visible or naked-eye planets are now in the evening skies although Venus and Mercury are still very low in the evening twilight and, thus, a bit difficult to spot. The other three, from east to west, are Saturn, Mars and Jupiter and each of these is easy to ...
... The planets: They’re back! All five of the visible or naked-eye planets are now in the evening skies although Venus and Mercury are still very low in the evening twilight and, thus, a bit difficult to spot. The other three, from east to west, are Saturn, Mars and Jupiter and each of these is easy to ...
The Universe in a Day - UC Berkeley Astronomy Department
... Looking to the future, we can expect the Universe of stars to go on for at least another millennium (using the same time compression factor). After that, there are other ages of the Universe (not dominated by stars), which grow colder and more bizarre, and take place on astronomical timescales… ...
... Looking to the future, we can expect the Universe of stars to go on for at least another millennium (using the same time compression factor). After that, there are other ages of the Universe (not dominated by stars), which grow colder and more bizarre, and take place on astronomical timescales… ...
File
... A comet is an icy small Solar System body (SSSB) that, when close enough to the Sun, displays a visible coma (a thin, fuzzy, temporary atmosphere) and sometimes also a tail. These phenomena are both due to the effects of solar radiation and the solar wind upon the nucleus of the comet. Comet nuclei ...
... A comet is an icy small Solar System body (SSSB) that, when close enough to the Sun, displays a visible coma (a thin, fuzzy, temporary atmosphere) and sometimes also a tail. These phenomena are both due to the effects of solar radiation and the solar wind upon the nucleus of the comet. Comet nuclei ...
1 3 Formation of the Solar System
... Earth has close to 100 craters that are larger than 0.1 km in diameter. The crater in the figure below was made by a meteorite with a mass of about 200,000 metric tons (200,000,000 kg). The crater, called Barringer Crater, is more than 1 km wide and 175 m deep. ...
... Earth has close to 100 craters that are larger than 0.1 km in diameter. The crater in the figure below was made by a meteorite with a mass of about 200,000 metric tons (200,000,000 kg). The crater, called Barringer Crater, is more than 1 km wide and 175 m deep. ...
Today`s Powerpoint
... Very eccentric orbit. Aphelion 98 AU, perihelion 38 AU. Period 557 years. Orbit tilt 44°. Radius 1200 ± 50 km so bigger than Pluto. Icy/rocky composition, like Pluto. More massive than Pluto. ...
... Very eccentric orbit. Aphelion 98 AU, perihelion 38 AU. Period 557 years. Orbit tilt 44°. Radius 1200 ± 50 km so bigger than Pluto. Icy/rocky composition, like Pluto. More massive than Pluto. ...
Across the Universe
... that is not primarily composed of solid matter. Saturn, Uranus and Neptune are also gas giants. Other terrestrial planets, aside from Earth, are Venus, Mercury, and Mars. Jupiter is the largest planet in our solar system. The solar system is also made up from other objects including asteroid belts, ...
... that is not primarily composed of solid matter. Saturn, Uranus and Neptune are also gas giants. Other terrestrial planets, aside from Earth, are Venus, Mercury, and Mars. Jupiter is the largest planet in our solar system. The solar system is also made up from other objects including asteroid belts, ...
1. In Ptolemy`s geocentric model, the planet`s mo
... original heliocentric model failed, because Kepler described the orbits as A) being on equants instead of epicycles. B) complex, with epicycles to account for retrograde motions. C) much larger than Copernicus had envisioned. D) around the Sun, not the earth. E) elliptical, not circular. 27. When a ...
... original heliocentric model failed, because Kepler described the orbits as A) being on equants instead of epicycles. B) complex, with epicycles to account for retrograde motions. C) much larger than Copernicus had envisioned. D) around the Sun, not the earth. E) elliptical, not circular. 27. When a ...
Solutions to problems
... 1. Stars are composed principally of H and He, 75% and 25%, respectively. Stars also are composed of heavier elements produced by stars and disseminated by their explosive deaths. These heavier elements are important to prospect of planets because we believe the planets begin forming with the conden ...
... 1. Stars are composed principally of H and He, 75% and 25%, respectively. Stars also are composed of heavier elements produced by stars and disseminated by their explosive deaths. These heavier elements are important to prospect of planets because we believe the planets begin forming with the conden ...
How Stars and Planets are Born
... due to gravity and shock waves Often other stars forming at same time from other parts of the nebula ...
... due to gravity and shock waves Often other stars forming at same time from other parts of the nebula ...
Teacher`s Guide The Solar Empire: A Star is Born
... Context: Harmful cosmic rays stream through space, but they’re deflected by the sun’s magnetic field. equilibrium Definition: A state of balance between opposing forces or actions. In the sun, this refers to the balancing of inward-pulling gravitational forces with outward-pushing pressure. Context: ...
... Context: Harmful cosmic rays stream through space, but they’re deflected by the sun’s magnetic field. equilibrium Definition: A state of balance between opposing forces or actions. In the sun, this refers to the balancing of inward-pulling gravitational forces with outward-pushing pressure. Context: ...
Lecture 3
... • Sun plus 8 (or 9 with Pluto) planets many of which have moons • plus “debris”: comets, asteroids, meteors, etc • We’ll go over historical understanding of motion (which is “complicated” when viewed from the Earth) and later look at Solar System formation, planetary atmospheres, and planets discove ...
... • Sun plus 8 (or 9 with Pluto) planets many of which have moons • plus “debris”: comets, asteroids, meteors, etc • We’ll go over historical understanding of motion (which is “complicated” when viewed from the Earth) and later look at Solar System formation, planetary atmospheres, and planets discove ...
Document
... If some massive object passes between us and a background light source, it can bend and focus the light from the source, producing multiple, distorted images. ...
... If some massive object passes between us and a background light source, it can bend and focus the light from the source, producing multiple, distorted images. ...
Astronomy Lecture 3c
... A.continuous B.emission line C.absorption line D.all of these may be created where there is a thin gas in front of a hotter source of continuous radiation 2. The surface of ? is very complex, consisting of regions of scarps, faults, etc.; this messed-up appearance may be due to an early collision or ...
... A.continuous B.emission line C.absorption line D.all of these may be created where there is a thin gas in front of a hotter source of continuous radiation 2. The surface of ? is very complex, consisting of regions of scarps, faults, etc.; this messed-up appearance may be due to an early collision or ...
The Ptolemaic Geocentric Universe
... The Ptolemaic Geocentric Universe The Ptolemaic universe is based on the assumption that all celestial objects can only move with perfect uniform circular motion. The Earth is at the center of the universe. Everything else orbits the Earth on epicycles orbiting on deferents centered on a point near ...
... The Ptolemaic Geocentric Universe The Ptolemaic universe is based on the assumption that all celestial objects can only move with perfect uniform circular motion. The Earth is at the center of the universe. Everything else orbits the Earth on epicycles orbiting on deferents centered on a point near ...
Homework problems for Quiz 2: AY5 Spring 2015
... 5. Where is the site of star formation? Only in the most distant parts of the Galactic halo where temperatures are cold enough for gas clouds to collapse. In the outer parts of the solar system where it is cold enough for gas clouds to collapse.. In molecular clouds where the temperature get down to ...
... 5. Where is the site of star formation? Only in the most distant parts of the Galactic halo where temperatures are cold enough for gas clouds to collapse. In the outer parts of the solar system where it is cold enough for gas clouds to collapse.. In molecular clouds where the temperature get down to ...
Atmospheric Composition
... weight as a column of water 10 meters deep. Air is 78% N2, 21 % O2, and 1% Ar (+ some water and other things). The mean molecular weight, Ma, is: (0.78 × 28) + (0.21 × 32) + (0.01 × 40) = 29 g mole-1. For a column weight of 1 kg cm-2 we have ~35 moles cm-2 or 2 × 1025 molecules cm-2 in the column. ...
... weight as a column of water 10 meters deep. Air is 78% N2, 21 % O2, and 1% Ar (+ some water and other things). The mean molecular weight, Ma, is: (0.78 × 28) + (0.21 × 32) + (0.01 × 40) = 29 g mole-1. For a column weight of 1 kg cm-2 we have ~35 moles cm-2 or 2 × 1025 molecules cm-2 in the column. ...
Formation and evolution of the Solar System
The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.This widely accepted model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, physics, geology, and planetary science. Since the dawn of the space age in the 1950s and the discovery of extrasolar planets in the 1990s, the model has been both challenged and refined to account for new observations.The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later been captured by their planets. Still others, such as the Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets often shifted due to gravitational interactions. This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.In roughly 5 billion years, the Sun will cool and expand outward many times its current diameter (becoming a red giant), before casting off its outer layers as a planetary nebula and leaving behind a stellar remnant known as a white dwarf. In the far distant future, the gravity of passing stars will gradually reduce the Sun's retinue of planets. Some planets will be destroyed, others ejected into interstellar space. Ultimately, over the course of tens of billions of years, it is likely that the Sun will be left with none of the original bodies in orbit around it.