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The Search for Earth-Like Planets
The Search for Earth-Like Planets

... Physicists have understood for a long time that the abrupt edge of the telescope’s “mirror” causes the bright diffraction rings. ...
Study Guide Astronomy
Study Guide Astronomy

... Due to the counterclockwise rotation of the Earth, the sun appears to move from east to west as it rises and sets each day Why is the North Star important? The North star is the closest star to the North Pole. It provides a stable marker in the Northern Hemisphere for which direction is North. Which ...
Document
Document

... USING KEY TERMS The statements below are false. For each statement, replace the underlined term to make a true statement. ...
Dynamics of the Earth
Dynamics of the Earth

... Consequence: Celestial coordinates keep changing. The celestial pole traces a circular path with period 26,000 yr => precession of equinoxes 360o/26,000 yr = 50”/yr along ecliptic. Celestial coordinates must be updated to current epoch. Also, motion of Sun/Moon above and below equatorial plane => nu ...
Today`s Powerpoint - Physics and Astronomy
Today`s Powerpoint - Physics and Astronomy

... Eclipses Lunar Eclipse When the Earth passes directly between the Sun and the Moon. Sun ...
CelestialSphere
CelestialSphere

... Morning and Evening “Stars” We see Mercury and Venus follow the Sun around in the sky. They may go down after, or come up before it. If they go down after, we see them in the evening. ...
CelestialSphere02
CelestialSphere02

... Morning and Evening “Stars” We see Mercury and Venus follow the Sun around in the sky. They may go down after, or come up before it. If they go down after, we see them in the evening. ...
Intelligent life in the Universe
Intelligent life in the Universe

That star is an M-dwarf, smaller, dimmer and cooler than our sun. So
That star is an M-dwarf, smaller, dimmer and cooler than our sun. So

... give off more damaging radiation than G-type stars like our sun. Kepler-186f, however, appears to sit far away enough from its star to be out of harm’s way. “That’s Very Exciting” (13) The discovery of Kepler-186f indicates that there may be more than one kind of habitable planet. From now on, scien ...
Space Key Word Search
Space Key Word Search

... supermassive black holes; radiation is emitted into space as material falls into a black hole, usually at the center of a galaxy - this is referred to as an AGN - Active Galactic Nucleus; extremely far away. ...
Chapter04
Chapter04

... whenever the two planets pass each other. If there is an arrowhead on each end of the rod, you can show that each planet sees the other in retrograde motion when they pass. Another idea is to ask the students to imagine how we would see Mars move first if the Earth were stationary and Mars moved (st ...
Sample Exam 1
Sample Exam 1

... B. Globular clusters C. Old stars ...
UGS303, Extraterrestrial Life: REVIEW FOR FIRST TEST
UGS303, Extraterrestrial Life: REVIEW FOR FIRST TEST

... stars. What are the advantages and drawbacks of each? Which method works better for planets orbiting close to their star and which works better for planets in large orbits? Describe how searches for transits and microlensing can detect planets. Which method was used to detect most of the new planets ...
Ch. 3 Sec. 5 Notes
Ch. 3 Sec. 5 Notes

... 2. Oort Cloud: spherical region of comets that surrounds the solar system out to more than 1,000 times the distance between Pluto and the sun Asteroids *Rocky objects, called asteroids, are too small and too numerous to be considered full-fledged planets *Most asteroids revolve around the sun betwee ...
Task 1: The Solar System Task 2: Orbits of the
Task 1: The Solar System Task 2: Orbits of the

Name - MIT
Name - MIT

... C) The meteorites are primarily composed of carbon D) The meteorites are older than 5.6 billion years E) The meteorites have very high concentrations of Nitrogen 33) Regolith is another name for … A) the mechanically weak region of the upper mantle of the Earth. B) the Lunar soil C) the supercontine ...
Aims You are going to create a poster about space. First work
Aims You are going to create a poster about space. First work

... Task 2: Orbits of the planets and the Moon On your poster you will need to draw the following diagrams. Draw a sketch on a scrap piece of paper before drawing them on your poster. 1 Draw a diagram showing the Sun, Mercury, Venus, Earth, the Moon, and Mars and the orbit for each planet and the Moon. ...
Name - MIT
Name - MIT

... C) The meteorites are primarily composed of carbon D) The meteorites are older than 5.6 billion years E) The meteorites have very high concentrations of Nitrogen 33) Regolith is another name for … A) the mechanically weak region of the upper mantle of the Earth. B) the Lunar soil C) the supercontine ...
Where are we at within the Universe? Earth
Where are we at within the Universe? Earth

Earth in Space 19-1
Earth in Space 19-1

... because it receives sunlight more directly than the poles.  Without the tilt Earth would not have seasons.  Summer and winter are not affected by changes in Earth's distance from the sun. In fact, when the Northern Hemisphere is having summer, Earth is at its greatest distance from the sun. ...
FINAL EXAM
FINAL EXAM

... 56. How many billion yrs did the PreCambrian last 57. What period ended with Dino extinction 58. When did Dinos 1st appear 59. How much can crustal plates move in a year 60. 3 major cloud types 61. Most common form of solid precipitation 62. Warm vs. Cold Front 63. Barometer 64. How is Oxygen added ...
title of lesson plan - Discovery Education
title of lesson plan - Discovery Education

... in the class will present a written and oral report about a planet. Presentations should include photos, illustrations, and any other multimedia materials that groups wish to present. Student groups should create materials that can be part of a class solar system display. ...
Worksheet
Worksheet

... 11. This is an example of how we use technology to help us learn about the Solar System and the universe. a. Amateur astronomers using their telescopes to study the night sky. b. The Hubble Space Telescope. c. Using computers to help us understand data we collect. d. All of the above. 12. What can e ...
File
File

... Earth’s orbit around the Sun is determined by the balance of the Sun’s gravitational pull on Earth and Earth’s forward momentum as it travels around the Sun. Without the Sun’s gravitational pull, Earth would not move in a circle around the Sun, but would continue moving in a straight line through th ...
ASTRONOMY
ASTRONOMY

... earth. Large meteorites can leave behind huge holes called craters. ...
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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.
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