• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
May 2015
May 2015

... Cosmic Origins – All original matter, including dust, began after the Big Bang when the Universe was created. As everything expanded, gases and dust that were close to each other were attracted, and clumped together by the force of gravity to form galaxies, stars and planetary systems, comets and ot ...
Ellipses
Ellipses

... was the center of the Universe. This would later be disproved by astronomers. Johan Kepler discovered the elliptical orbit. Kepler was the first person to theorize that the planets actually move in ovaloid orbits. The equation he used to prove this would later become known as the Planetary Laws of M ...
Chapter 18 - "The Earth in Space"
Chapter 18 - "The Earth in Space"

From Dust to Planets - International Space Science Institute
From Dust to Planets - International Space Science Institute

Two new transiting extra-solar planets discovered with SuperWASP
Two new transiting extra-solar planets discovered with SuperWASP

... using the British SuperWASP cameras at La Palma, Spain, and the new SOPHIE spectrograph at Haute-Provence, France. These two new planets, of the "hot Jupiter" type, join the very "exclusive club" of extrasolar planets showing transits. More than 200 planets are known today to orbit stars other than ...
May 13, 2014 - In the News Story 1
May 13, 2014 - In the News Story 1

... The bright Moon, practically full, shines near Saturn. The Moon creeps to within 1° to 3° of Saturn before dawn Wednesday morning for the Americas. For New Zealand and most of Australia, the Moon occults (covers and uncovers) Saturn during nighttime; map and timetables. Wednesday, May 14 Full Moon ( ...
The Constellation Lepus, the Hare
The Constellation Lepus, the Hare

The Galaxy Presentation 2011
The Galaxy Presentation 2011

... Distribution of mass in the Milky Way Galaxy - ROTATION CURVE – plots rotational velocity vs. distance from center - Merry-go-round – outer horses make larger circles and thus travel faster than inner horses. Opposite is true for Solar System rotation curve – inner planets move at faster speeds tha ...
Study Guide for 1ST Astronomy Exam
Study Guide for 1ST Astronomy Exam

... The successful student will be able to… Unit 1: Our Planetary Neighborhood  Write the planets in order of increasing distance from the Sun,  Using a ratio determine how much larger one object is compared to another given their diameters,  Convert AU into kilometers and kilometers into AU. Unit 2: ...
Solutions: Doppler Effect
Solutions: Doppler Effect

WORD - UWL faculty websites
WORD - UWL faculty websites

ELIZABETH KLARER: UFO Contactee and Space
ELIZABETH KLARER: UFO Contactee and Space

1700Gravity
1700Gravity

... This animation illustrates the origin of tidal forces. Imagine three identical billiard balls placed some distance from a planet and released. The closer a ball is to the planet, the more gravitational force the planet exerts on it. Thus, a short time after the balls are released, the yellow 1-ball ...
Renaissance Astronomy - Faculty Web Sites at the University of
Renaissance Astronomy - Faculty Web Sites at the University of

... Planets move faster when they are closer to the Sun in such a way that a line between the planet and the Sun sweeps out an equal area in the same time interval. The Law of Equal Areas ...
Although a wall looks real, solid to sight and feel, a wall is not a wall
Although a wall looks real, solid to sight and feel, a wall is not a wall

... Throughout most of the life of the star, the nuclear fires in its interior burn steadily, consuming hydrogen and leaving behind a residue of heavier elements. These heavier elements are the ashes of the star’s fire. Oxygen, iron, copper, and many other elements, ranging up to gold, lead, and uranium ...
National Round Questions 2014
National Round Questions 2014

... Saturn and Jupiter? a) both rotate faster than the Earth b) both rotate slower than the Earth c) only one rotates rapidly while the other rotates very slowly d) their periods of rotation are linked to their period of revolution ...
28 The solar system object in the photograph below is 56 kilometers
28 The solar system object in the photograph below is 56 kilometers

... (1) covering a dirt road with pavement (2) reducing the gradient of a steep hill (3) planting grasses and shrubs on a hillside (4) having a decrease in the annual rainfall ...
Chapter 2 Test Review Vocabulary • axis – an imaginary line
Chapter 2 Test Review Vocabulary • axis – an imaginary line

...  What are two different ways that the moon moves?  The moon rotates and revolves.  How is the moon different from the sun?  The sun makes it own light and has no phases. The moon has phases and reflects the sun’s light.  When does the moon look like a thin sliver?  When you can only see a smal ...
Gravitatio
Gravitatio

... allowed extremely accurate predictions of planetary orbits.  Cavendish measured gravitational forces between human-scale objects before 1800. ...
Cosmic Collisions Educators Guide
Cosmic Collisions Educators Guide

... Gravity — the force of attraction between any two bodies with mass — is by far the most important force in setting the objects in the universe in motion. The more mass an object has, the greater the gravitational pull it exerts. And the closer the two objects are, the stronger the pull of gravity th ...
STAR UNIT FLASH BACKS
STAR UNIT FLASH BACKS

8 Grade/Comp.Sci.III adv Course Code: 2002110
8 Grade/Comp.Sci.III adv Course Code: 2002110

... scaled models of our solar system in various ways. Identify characteristics of planets in the solar system, including order and distance from the sun, size, composition, number of moons, atmosphere, and unique features by having students chose an object or planet in our solar system to present to th ...
Exoplanet, 51 Pegasi b, Solar System, VLT, La Silla. ESOcast
Exoplanet, 51 Pegasi b, Solar System, VLT, La Silla. ESOcast

Objectives for Units 1-3
Objectives for Units 1-3

... limb darkening suggest the surface of the moon is rough on both a large and small scale. 4. Explain how it was possible to predict the Moon has no atmosphere. a. Using the kinetic theory of gases, it was shown that gas molecules in the high daytime temperatures on the Moon travel faster than the Moo ...
Starry Night Lab
Starry Night Lab

... [Use 3000x speed to advance backwards or forwards to see setting times] If Venus is west of the Sun, so it's rising earlier, give us: a) time of Sunrise; b) time of Venus-rise; c) how long Venus is up before sunrise (subtraction again). ...
< 1 ... 149 150 151 152 153 154 155 156 157 ... 373 >

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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report