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Topic: Introduction to Earth, Moon, Sun Date:
Topic: Introduction to Earth, Moon, Sun Date:

... Why do we experience moon phases? ...
Final Exam Earth science
Final Exam Earth science

... Giant and supergiant stars are higher and farther to right on H-R diagram. White dwarfs are hot, but not very bright, so they appear at bottom center of the diagram. Black hole-the most massive stars (more than 40X the mass of our sun) become black holes when they collapse. The gravity of this mass ...
Inner Planets - Spokane Public Schools
Inner Planets - Spokane Public Schools

... sometimes called the morning or evening star because it appears just after sunset and before sunrise. With sunlight reflecting off its dense cloud cover, Venus is brighter than anything in the sky except for the Sun and moon. Because of its location between the Sun and Earth, Venus goes through phas ...
PDF
PDF

... Solar System. Sphere. ...
Astronomy 311: Terrestrial Planet Geology • What is the most
Astronomy 311: Terrestrial Planet Geology • What is the most

... – Radiometric dating of lunar rocks from a crater show the crater was formed only a few tens of millions of years ago. – Water is found on Martian crater bottoms. – Liquid water is found underneath the Martian surface. – Clear cutting the Amazon rain forest reveals vast regions of ancient terrain th ...
Lecture #27: The Next 100 Years
Lecture #27: The Next 100 Years

... certainly have a real image of a terrestrial planet….. But if we find terrestrial planets how do we detect life? This is not as easy as it might sound…. We can look for things that are common in Earth’s atmosphere like Oxygen, Methane, CO2 But Venus, Earth and even Mars look pretty similar in a spec ...
Benchmark One Study Guide: Science Benchmark Wed
Benchmark One Study Guide: Science Benchmark Wed

... closest to the Sun? 2. How do the inner or terrestrial planets differ from the outer planets in terms of composition (what the planets are made up of) and size? 3. Which planets have a gravity greater/stronger than Earth? 4. What makes Earth unique and have the ability to support life? (3 reasons) ...
answer key
answer key

... 5. A constellation is an agreed upon arrangement of stars. They are VERY useful as “land”marks in the sky 6. Because the Earth rotates once every 24 hours, all celestial objects rise in the east and set in the west. 7. Because the earth orbits the sun solar day is about 4 minutes longer than a sider ...
Quiz 2 Review Answers
Quiz 2 Review Answers

... a. Rotate – to spin on an axis that passes through the center of an object b. Revolve – to circle around a point outside of an object 4. Describe the shape of the earth as it rotates. – It bulges at the equator. 5. What is the “Coriolis effect”? – the tendency of objects initially moving in a straig ...
File
File

... 11. The distance between Earth and the Sun is one light year. 12. The stars seem to move from west to east because Earth is rotating on its axis. 13. Earth orbits around the Sun. 14. Earth is the only known planet in which water can exist in gas, solid, and liquid form. 15. The four outer planets ar ...
Key Words – Year 7 - Space Word Meaning axis Imaginary vertical
Key Words – Year 7 - Space Word Meaning axis Imaginary vertical

... The path that a planet takes around the Sun, or the path that a moon or satellite takes around a planet. ...
Introduction to the Solar System
Introduction to the Solar System

... The distance between stars (and galaxies) is HUGE so we measure it in light years. Light Years is the distance light will travel in a year **very important**: a light year is not a time, but a distance! ...
Topic 3: Astronomy
Topic 3: Astronomy

... - the stars are fixed on a transparent sphere that rotates once each day - the Sun, Moon, and planets are carried on separate spheres which also rotate - this model explains the general features of the apparent motions of the stars, Sun, Moon, and planets, but does not allow for accurate predictions ...
Unit 8: Astronomy
Unit 8: Astronomy

... density and mass Cannot see the surface of Venus due to thick cloud cover Atmosphere made of 96% carbon dioxide results in very hot temperatures ...
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Name: Astronomy Study Guide Part 1 Define Astronomy

... Month- Length of time for the moon to revolve around earth Year- Length of time for Earth to revolve around sun 365.25 days Calendar- years, months, and days based on our celestial objects Leap Year- Feb 29 once every 4 years to make up for our 365.25 day solar year ...
Solar System and Astronomy puzzle 001
Solar System and Astronomy puzzle 001

... the galaxy that contains the Earth 11. lost its status as a planet in 2006 when it was reclassified as a dwarf planet 14. interstellar cloud of dust, hydrogen, helium and other ionized gases ...
Jeopardy Questions
Jeopardy Questions

... atmosphere or a pane of glass) that only allows certain wavelengths of light through. For a planet, like the Earth or Venus, the atmosphere allows in UV and visible light, but blocks some infrared light. The Earth radiates its blackbody emission in the infrared, but some of that is blocked, so the h ...
Presentation 2
Presentation 2

Topic 2 Booster PP - AstronomyGCSE.co.uk
Topic 2 Booster PP - AstronomyGCSE.co.uk

history of life
history of life

... originated on Earth, the "life experiment" may have been repeated 1015 times (1,000,000,000,000,000) - or a million billion times In addition, life may have originated and evolved differently on other planets - using molecules other than carbon (like silicon, which has an atomic structure similar to ...
Astronomy Study Guide Review
Astronomy Study Guide Review

... Equinox- latin for “equal nights” Vernal Equinox- Spring- March 20th Autumnal Equinox- Fall- Sept. 22nd Center of Sun is in the same plane as the Earth’s equator. ...
Celestial Bodies
Celestial Bodies

Earth-Sun Relationship
Earth-Sun Relationship

... • Twice a year, when the tilt of the Earth's is directly towards or away from the Sun • Winter Solstice - December 21 - beginning of winter. • Summer Solstice -June 21 - beginning of summer ...
Our_Solar_System
Our_Solar_System

... Our Solar System ...
Question 1: The average distance from Earth to the sun is
Question 1: The average distance from Earth to the sun is

... Question 1: Explosive events related to the acceleration of high-energy particles near the sun which can reach Earth and interfere with the Earth’s magnetosphere are known as … ...
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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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