• 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
Solar System Marius A
Solar System Marius A

... total mass of the Solar System. About three quartersof the Suns's mass consists of hydrogen;the rest is mostly helium ,with much smaller quantities of heavier elements, including oxygen , carbon , neon and iron. ...
ppt
ppt

... All of them are bright compared with the majority of the stars. Some – Venus, Mars, and Jupiter – can outshine the brightest stars in the sky. ...
Chapter 30 Study Notes
Chapter 30 Study Notes

... A star with the sun’s mass would stay on the main sequence of the H-R diagram for about _____ 10 billion years. ...
Slide 1 - MrMrsCase
Slide 1 - MrMrsCase

... dwarf planets. ...
Our Solar System ppt
Our Solar System ppt

... and comet dust (up to a few meters in diameter) ◦ If they collide with Earth’s atmosphere, they form visible streaks of light as they burn up and are called meteors (shooting stars) ◦ If a meteor reaches Earth’s surface, it is then classified as a meteorite ...
Earth has formed in our solar system
Earth has formed in our solar system

... Small,dense, slow rotation, few moons ...
Volcanoes and Igneous Activity Earth
Volcanoes and Igneous Activity Earth

... ▪ 2.5 times more massive than combined mass of the planets, satellites, and asteroids ▪ If it had been ten times larger, it would have been a small star • Rapid rotation ▪ Slightly less than 10 hours ▪ Slightly bulged equatorial region ...
Solar System Bead Distance Primary Audience
Solar System Bead Distance Primary Audience

Quiz 1 Review, Astronomy 1144 - astronomy.ohio
Quiz 1 Review, Astronomy 1144 - astronomy.ohio

Distances in Space
Distances in Space

... the Sun) to us is Alpha Centauri. Alpha Centauri is 4.3 light years away or 4.3x9.5x1012 km = 3.8x1013 km away from earth. • This means that the light that we see from Alpha Centauri left that star 4.3 years ago. ...
File
File

ρ ρ ρ ρ - Bryn Mawr College
ρ ρ ρ ρ - Bryn Mawr College

... what is the density of the core? How does this compare with the Earth’s core density? This is a variation on the previous question and the same formula can be assumed. Problem 5. Moment of inertia factors I/MR2 (and other information) for the various planets can be found at (http://nssdc.gsfc.nasa. ...
Extrasolar Planet Populations, Lebo, 8-1
Extrasolar Planet Populations, Lebo, 8-1

... • Overwhelming majority are massive gas giants, many close to their parent star • This is because they are easiest to find with the Doppler technique • Have found: multiple planet systems (20+); planet atmospheres; some low-mass (probably solid) planets • Eccentricity seems more common than circular ...
Achievement
Achievement

... Explain in detail how our solar system came to have inner and outer planets. In your answer, you should consider the: • formation of the solar system (including planets and their associated moons) • size and composition of the inner and outer planets • other features of the inner and outer planets r ...
stars concept review
stars concept review

... smashed together to form neutrons b. a large cloud of gas and dust in space where stars are born c. a shrinking, spinning region in space with a central concentration of matter d. a large explosion on a star that makes it brighter e. an object so dense that even light cannot escape its gravity ...
Solar System
Solar System

Earth and Space - Sun, Moon and Stars
Earth and Space - Sun, Moon and Stars

Exoplanets and Tides
Exoplanets and Tides

... Venus, an inferior planet, very rarely transits the face of the Sun as seen from Earth. This happened most recently in 2012, as shown here (the black dot on the Sun’s face) ...
Slide 1
Slide 1

Earth Science
Earth Science

... Saturn is the second largest planet and the sixth from the sun. Saturn is made of materials that are lighter than water. If you could fit Saturn in a lake, it would float! ...
Science 1 (MillinerSci1)
Science 1 (MillinerSci1)

... B. because the larger stars are a further distance away C. because the larger planets are a further distance away D. because the smaller planets are at a further distance away ...
Earth Science - MrsHeatonsWiki
Earth Science - MrsHeatonsWiki

... Callisto has the oldest, most cratered surface of any body yet observed in the solar system. ...
day 2 - The Solar System Presentation
day 2 - The Solar System Presentation

...  can be 100m to 40 km in diameter o Short-period comets: originate from just beyond Neptune and orbit the Sun in less than 200 years (for example, Halley’s Comet which takes 75-76 years to orbit) o Long-period comets: originate from a spherical cloud of debris further than Pluto and orbit the Sun i ...
Chapter 11
Chapter 11

... and heat gases to 11 000 000°C. The gas is spewed out in every direction. When these high energy particles rush past Earth they create an effect called solar wind Earth’s magnetic field deflects most of this dangerous solar wind Some of it enters at the North and South pole, collide with gases in th ...
Quantities every Physicist should know
Quantities every Physicist should know

< 1 ... 311 312 313 314 315 316 317 318 319 ... 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