A Tour of our Solar System
... Mars In the early 1900’s, people believed Mars was covered in canals and that there may be a vast alien civilization living on it. ...
... Mars In the early 1900’s, people believed Mars was covered in canals and that there may be a vast alien civilization living on it. ...
Characteristic Properties
... 2. Disk shape of solar system- small orbit inclination; prograde circular motion; same tilt&direction of rotation axes (almost) 3. Jovian/Terrestrial planets: low/high density, huge/small atmospheres, fast/slower rotation rates, many/few moons & rings 4. Space Debris – icy comets, rocky asteroids ...
... 2. Disk shape of solar system- small orbit inclination; prograde circular motion; same tilt&direction of rotation axes (almost) 3. Jovian/Terrestrial planets: low/high density, huge/small atmospheres, fast/slower rotation rates, many/few moons & rings 4. Space Debris – icy comets, rocky asteroids ...
Galaxies and the Big Bang Theory
... •Spiral galaxies contain ____________ and _____________. Elliptical Galaxies •Look like _______________ or __________________ ______________. •Billions of stars •Contain very little _________ and ________ between stars. ...
... •Spiral galaxies contain ____________ and _____________. Elliptical Galaxies •Look like _______________ or __________________ ______________. •Billions of stars •Contain very little _________ and ________ between stars. ...
Homework #1 Solutions
... 1/2 1/R, and the escape velocity is 2 smaller than from the Earth . 7. We use Kepler’s third law to solve this problem. For our solar system, we can write this law as: P 2 = r3 , with the understanding that the orbital period P must be expressed in years and the orbital radius r in AU. We are given ...
... 1/2 1/R, and the escape velocity is 2 smaller than from the Earth . 7. We use Kepler’s third law to solve this problem. For our solar system, we can write this law as: P 2 = r3 , with the understanding that the orbital period P must be expressed in years and the orbital radius r in AU. We are given ...
32) What spacecraft mission crashed because the NASA contractor
... 17) Which of the following is not one of, nor a direct consequence of, Kepler's Laws? A) More distant planets orbit the Sun at slower speeds. B) The orbit of each planet about the Sun is an ellipse with the Sun at one focus. C) The force of attraction between any two objects decreases with the squar ...
... 17) Which of the following is not one of, nor a direct consequence of, Kepler's Laws? A) More distant planets orbit the Sun at slower speeds. B) The orbit of each planet about the Sun is an ellipse with the Sun at one focus. C) The force of attraction between any two objects decreases with the squar ...
Review for Exam I PHYS 1050
... •Acceleration due to gravity same on objects of different mass, but force of gravity on each object is different. •Force exerted on pebble by Earth is the same size, but opposite direction as force exerted on Earth by pebble. •Why does the Moon orbit the Earth when the Earth’s gravity is pulling the ...
... •Acceleration due to gravity same on objects of different mass, but force of gravity on each object is different. •Force exerted on pebble by Earth is the same size, but opposite direction as force exerted on Earth by pebble. •Why does the Moon orbit the Earth when the Earth’s gravity is pulling the ...
CopernicanRev1
... Early astronomy was about time keeping (when to sow and reap crops)* Needed better observations to keep the various calendars synchronized Hesiad, Works and Days …when the Pleiades rise it is time to use the sickle, but the plough when they are setting; 40 days they stay away from heaven; when Arctu ...
... Early astronomy was about time keeping (when to sow and reap crops)* Needed better observations to keep the various calendars synchronized Hesiad, Works and Days …when the Pleiades rise it is time to use the sickle, but the plough when they are setting; 40 days they stay away from heaven; when Arctu ...
SNC 1D1 Space Unit Review Answers How long does it take the
... Because they have different lengths of time that they take to orbit the Sun. 24. Name and describe the predominant scientific theory on how the universe was formed. -Big Bang Theory: 14 billion years ago, everything in the Universe existed in a single fixed mass that was hot and dense. -Suddenly, 13 ...
... Because they have different lengths of time that they take to orbit the Sun. 24. Name and describe the predominant scientific theory on how the universe was formed. -Big Bang Theory: 14 billion years ago, everything in the Universe existed in a single fixed mass that was hot and dense. -Suddenly, 13 ...
Lecture 5 Astronomy
... 24. Pluto is so cold compounds which are gasses on Earth are solids like nitrogen. What major difficulty would impede human exploration of this planet? A. Body temperature of astronauts would cause them to melt through Pluto’s crust B. Lack of solar radiation would limit using of solar panels to pro ...
... 24. Pluto is so cold compounds which are gasses on Earth are solids like nitrogen. What major difficulty would impede human exploration of this planet? A. Body temperature of astronauts would cause them to melt through Pluto’s crust B. Lack of solar radiation would limit using of solar panels to pro ...
To learn how the shape and period of... To learn how the shape of the orbit... Gravity, Orbits and Kepler’s Laws
... To learn how the shape of the orbit depends on the speed and orbital radius of the planet. To observe Kepler’s laws INTRODUCTION Planets or other objects orbiting a star are accelerating -- they are continually changing direction. The force that produces this acceleration is the gravitational at ...
... To learn how the shape of the orbit depends on the speed and orbital radius of the planet. To observe Kepler’s laws INTRODUCTION Planets or other objects orbiting a star are accelerating -- they are continually changing direction. The force that produces this acceleration is the gravitational at ...
Chapter 27 Stars and Galaxies
... 2. Elliptical: nearly spherical with very bright centers; no spiral arms No young stars, dust, or gas ...
... 2. Elliptical: nearly spherical with very bright centers; no spiral arms No young stars, dust, or gas ...
Astronomy
... the Moon, one at Alexandria saw 1/5th of the Sun's disk, that is 1/5th of 30 arcminutes of the Sun's disk was visible (The Sun's angular diameter is 30 arcminutes or 1/2 degree). The angular size of the visible Sun seen at Alexandria therefore is 1/10th of a degree (0.1 degree) and this angle, expre ...
... the Moon, one at Alexandria saw 1/5th of the Sun's disk, that is 1/5th of 30 arcminutes of the Sun's disk was visible (The Sun's angular diameter is 30 arcminutes or 1/2 degree). The angular size of the visible Sun seen at Alexandria therefore is 1/10th of a degree (0.1 degree) and this angle, expre ...
LESSON PLANS Week/Date: Dec. 1, 2014 Grade/Subject: Science
... Daily Objective Students will discover various parts of the Solar System and how they move through time. ...
... Daily Objective Students will discover various parts of the Solar System and how they move through time. ...
Question 1 (7-5 thru 7-7 PPT Questions)
... Evolutionary Theories 1. All evolutionary theories have their start with Descartes’s whirlpool or vortex theory proposed in 1644. 2. Using Newtonian mechanics, Kant (1755) introduced the idea of a rotating cloud of gas contracting under gravity and forming a disk. Laplace (1796) showed that such a ...
... Evolutionary Theories 1. All evolutionary theories have their start with Descartes’s whirlpool or vortex theory proposed in 1644. 2. Using Newtonian mechanics, Kant (1755) introduced the idea of a rotating cloud of gas contracting under gravity and forming a disk. Laplace (1796) showed that such a ...
Stars are classified according to their color
... • Stars are classified according to their color temperature: ...
... • Stars are classified according to their color temperature: ...
Rare Earth hypothesis
In planetary astronomy and astrobiology, the Rare Earth Hypothesis argues that the origin of life and the evolution of biological complexity such as sexually reproducing, multicellular organisms on Earth (and, subsequently, human intelligence) required an improbable combination of astrophysical and geological events and circumstances. The hypothesis argues that complex extraterrestrial life is a very improbable phenomenon and likely to be extremely rare. The term ""Rare Earth"" originates from Rare Earth: Why Complex Life Is Uncommon in the Universe (2000), a book by Peter Ward, a geologist and paleontologist, and Donald E. Brownlee, an astronomer and astrobiologist, both faculty members at the University of Washington.An alternative view point was argued by Carl Sagan and Frank Drake, among others. It holds that Earth is a typical rocky planet in a typical planetary system, located in a non-exceptional region of a common barred-spiral galaxy. Given the principle of mediocrity (also called the Copernican principle), it is probable that the universe teems with complex life. Ward and Brownlee argue to the contrary: that planets, planetary systems, and galactic regions that are as friendly to complex life as are the Earth, the Solar System, and our region of the Milky Way are very rare.