• 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
December 2015 - Hermanus Astronomy
December 2015 - Hermanus Astronomy

... the Sun. However, earlier studies that proposed giant planets could possibly eject one another did not consider the effect such violent encounters would have on minor bodies, such as the known moons of the giant planets and their orbits. So, Cloutier and his colleagues turned their attention to moon ...
scale_moon
scale_moon

... I went to that workshop yesterday, which was decently informative – more important was that it gave me a bunch of ideas for what we can teach this quarter. One thing to definitely keep in mind is how many preconceptions and misconceptions kids are going to have about this stuff (Ross, I’m guessing y ...
Here
Here

... Distances between objects in space are so great that specifying distance in miles is like giving the distance from here to St. Louis in millimeters. Scientists use light-years instead of miles to specify distances to stars and galaxies. A light-year is actually the distance light travels in one year ...
The Seven African Powers of Creation
The Seven African Powers of Creation

... They are listed in the periodic table of elements that can be found in any chemistry textbook. They start with hydrogen (1 planet), followed by helium (2 planets), all the way to fermium (100 planets, or as they say, 100 electrons). The rest over 100 are artificial elements either man-made, or ephem ...
The Laws of Planetary Motion
The Laws of Planetary Motion

File - 5th Grade Science Almost done!!!!!!!!!
File - 5th Grade Science Almost done!!!!!!!!!

EARTH & SPACE SCIENCE
EARTH & SPACE SCIENCE

... In the late 1500s, Pope Gregory XIII formed a committee to create a calendar that would keep the calendar aligned with the seasons. We use this calendar today. In this Gregorian calendar, century years, such as 1800 and 1900, are not leap years unless the century years are exactly divisible by 400. ...
“TIME”?
“TIME”?

Frostburg State Planetarium presents
Frostburg State Planetarium presents

chapter 8 Notes
chapter 8 Notes

... •  Evidence from space probes has shown that Mars probably had large amounts of water on its surface. •  If life existed and left evidence, future astronauts will find it. ...
Stars
Stars

... The formations appear at different times of the year. Each season earth can view a different sets of constellations. Also the earth views a different set of constellations on the northern and southern hemispheres. Like in August they have different sets of constellations then in April. One of the mo ...
Question 1
Question 1

... • Evidence from space probes has shown that Mars probably had large amounts of water on its surface. • If life existed and left evidence, future astronauts will find it. ...
The Milky Way – A Classic Galaxy
The Milky Way – A Classic Galaxy

... Omega Cen with core outlined ...
View the presentation slides
View the presentation slides

... • The star wobbles as the planet orbits it. • The star becomes (slightly) dimmer if the planet passes in front of it (“transits” the star). Ideally, we’d like to observe a planet both ways. ...
Laboratory Procedure (Word Format)
Laboratory Procedure (Word Format)

... If the star is not in the plane of the ecliptic, but is at a celestial latitude (L), the value of VO just obtained should be corrected for by dividing it by the cosine L. The observational material for this exercise consists of two spectrograms of Arcturus taken about one half year apart on July 1, ...
Astronomy and Cosmology - spring 2003 - final exam
Astronomy and Cosmology - spring 2003 - final exam

... A) 4 minutes B) 20 minutes C) 2 hours D) 1 hour 24. A lunar eclipse does not occur at every full moon because A) a lunar eclipse cannot occur after sunset. B) the orbit of the Moon is not a perfect circle. C) the plane of the Moon's orbit is at an angle to the plane of the Earth's orbit. D) the path ...
The Origin of the Solar System and Other Planetary Systems
The Origin of the Solar System and Other Planetary Systems

Measuring the Sky - Physics and Astronomy and more!
Measuring the Sky - Physics and Astronomy and more!

Document
Document

HW attached
HW attached

... 5 All objects are attracted to each other, so why are some attractions stronger than others? For example, Earth’s gravity has a more powerful effect on you than the Sun’s gravity. With the Sun’s gravitational attraction holding all of the objects in the solar system, how could this be possible? The ...
The Moon
The Moon

... to each other. Some astronomers think these objects should be classified as planets. Do you think any of them should be? Which objects? #17 is Ceres, an asteroid. Astronomers do not consider it a planet because it is too small. #27 is Pluto and #28 is Charon, a moon od Pluto. Charon is not a planet ...
Retrograde Motion Activity Astronomy Lesson 3
Retrograde Motion Activity Astronomy Lesson 3

... wander among the stars. Does anyone remember what that “wandering” behavior is called? (Retrograde Motion) In order to truly experience retrograde motion, we’re going to pretend to be different objects in our solar system so that we can see and understand the reason behind this apparently erratic be ...
TOP 78 ASTRONOMY FACTS 1. The solar system consists of the
TOP 78 ASTRONOMY FACTS 1. The solar system consists of the

Lec2_2D
Lec2_2D

Chapter 1 Section Misconception Truth Distances in the Universe
Chapter 1 Section Misconception Truth Distances in the Universe

< 1 ... 177 178 179 180 181 182 183 184 185 ... 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