• 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
LAB1_1SEP09
LAB1_1SEP09

... A sextant is used to measure the angle between the horizon and sun, moon, Venus, or North Star Used (before GPS) for navigation, especially at sea. Latitude can be determined directly (at noon) Longitude requires accurate timekeeping. ...
Science CRCT Jeopardy 1
Science CRCT Jeopardy 1

... sunlight, the climate gets colder. B. Climate is the average of the conditions of the atmosphere over many years. C. Weather is the average of the atmosphere over ...
Introduction Notes - Sunflower Astronomy
Introduction Notes - Sunflower Astronomy

... unit is the distance from the Earth to the Sun, 1.48x108 km) or 4.3 light years. This distance is typical of distances between stars in our galaxy. Stars are formed from interstellar clouds of dust and gas and evolve at rates that depend on their mass (massive stars evolve fast, less massive stars e ...
Chapter03
Chapter03

... 2. One sphere carrying the Sun rotated eastward once per year. A second, tilted by 23.5° with respect to the first, rotated westward once per day. 3. During some eclipses the curvature of the Earth’s shadow would be more pronounced than during other eclipses. 4. Another explanation is that the diame ...
Ch 29 Sun and Solar Activity
Ch 29 Sun and Solar Activity

... atmosphere, disrupt longrange radios, satell. & radar • solar flame animation ...
UV Radiation in Different Stellar Systems
UV Radiation in Different Stellar Systems

... Soderblom & King (1998) defined “solar-like” as main sequence stars of spectral class F8V to K2V (or B-V within 0.50 to 1.00). Several extrasolar planets have been found around those types of stars, so an important point to study is whether they are suitable for life or not. Stellar luminosity and i ...
Chaper 1 part b
Chaper 1 part b

... 1. ROTATION=the spin of the Earth on its axis. It takes one day for the Earth to complete one rotation. 2. REVOLUTION=the movement of the Earth in orbit around the sun. It takes one year for the Earth to complete one ...
Rocket Science
Rocket Science

... discouraged by PBIS, as it may result in little or no monetary gain after secondary education or a fine of $250,000. ...
Fall 2014 -- Astronomy 1010: Planetary Astronomy Exam 1
Fall 2014 -- Astronomy 1010: Planetary Astronomy Exam 1

... outside the Milky Way, which is why we can see it as a band across the night sky ...
USOEAstroEducObjectives.pdf
USOEAstroEducObjectives.pdf

... In summary, K-9 standards emphasize knowledge of the solar system, the seasons, planetary motion and the types of deep sky objects. Standards for 10-12 emphasize knowledge of deep sky structure, the cosmic distance scale and the evolution of the universe. Standards for 11-12 students includes physic ...
Please jot down or ponder your answers. 1. What causes seasons
Please jot down or ponder your answers. 1. What causes seasons

Space - cloudfront.net
Space - cloudfront.net

Twinkle, Twinkle, Little Star
Twinkle, Twinkle, Little Star

... The brightness of a star depends on both the size and temperature of the star. But, how bright it APPEARS to us depends on how far it is from Earth and how bright it truly is. ...
Unit 9 Study Guide
Unit 9 Study Guide

... does not give off its own light, it only reflects the light from the Sun. ...
intro.phys.psu.edu
intro.phys.psu.edu

Constellations Jeopardy
Constellations Jeopardy

Grade 6 Standard 4 - Murray School District
Grade 6 Standard 4 - Murray School District

... 8. Which of the following statements is true about stars in a constellation? A. They are all the same distance from Earth. B. They are equal distances from the Sun. C. They are different distances from the Earth. D. They are all in different galaxies. 9. If 2 stars give off equal amounts of light, w ...
The Crust
The Crust

... Other Considerations Influencing HZ Caveat: We are relegated to only considering life as we know it & to considering physical conditions similar to Earth • Greenhouse effect: Increases surface T (e.g., Venus, at 0.72 AU, is within HZ, but Ts~745 K!) • Lifetime of star: larger mass = shorter lifetim ...
Week 8
Week 8

Jeopardy
Jeopardy

... Evidence from structure: vestigal organs ...
astronomy notes2013
astronomy notes2013

... moon, Sun and Earth to cause spring and neap tides. What phases of the moon cause each? Which has more gravitational pull on the Earth, the moon or the Sun? ...
The Copernican Model (1543)
The Copernican Model (1543)

Sample Midterm
Sample Midterm

... The Moon attracted more asteroids than the second satellite. The second satellite has a thicker crust than the Moon. The second satellite is denser than the Earth. The surface of the second satellite is younger than that of the Moon. The surface of the second satellite is composed primarily of iron, ...
Sept2 - University of Arizona
Sept2 - University of Arizona

... • “Spots” on the Sun; the Sun rotates • The Moon has mountains, craters, rocky surface with imperfections • The “planet” Jupiter is not a pinpoint star – but a disc in the sky WITH MOONS that orbit it • Venus has “PHASES” like the MOON ...
Name
Name

... a. Medium, cold star b. Medium, hot star ...
< 1 ... 299 300 301 302 303 304 305 306 307 ... 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