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1 HoNoRS227 Examination #3 Name
1 HoNoRS227 Examination #3 Name

Astronomy Notes
Astronomy Notes

... o 37% the gravity of Earth-you can jump 3x higher on Mars o Home to the tallest mountain (Olympus Mons) in the solar system o Has huge dust storms that lasts for months o Takes 687 Earth days to orbit the Sun o Has seasons that last twice as long as Earth o Has two moons (Phobos and Deimos) ...
OUR EARTH AND UNIVERSE --- WHERE WE LIVE (by Charles
OUR EARTH AND UNIVERSE --- WHERE WE LIVE (by Charles

... there are 60 seconds in a minute and 3,600 seconds in an hour. There are one million seconds in 12 days. There are one billion seconds in about 33 years. Our Earth rotates around a medium size star that we name the Sun. Our sun is 93 million miles for earth. Our moon was most likely formed when a gi ...
Pistol Star of the Pistol Nebula
Pistol Star of the Pistol Nebula

... 10^6.3) and appears to have more than 150 Solar-masses, having been resolved as a single star down to a projected separation of 110 AUs (Figer et al, 1998). Indeed, the star may have started with as much as 200 to 250 Solar-masses but has been violently shedding much of its substance. With over 40 S ...
TY Course Day 2 Friday Solar System
TY Course Day 2 Friday Solar System

... There will be some Penumbral lunar eclipses coming up, but as the Moon will not pass through the main part of the Earth's shadow, there is not much to see, and if you didn't know that an eclipse was taking place you would not be aware of it. So we will have to wait for a decent lunar eclipse until ...
Word doc - UC-HiPACC - University of California, Santa Cruz
Word doc - UC-HiPACC - University of California, Santa Cruz

... One big early surprise (1995) was the ground-based discovery of “hot Jupiters:” gas giants the size of Jupiter in orbits around their parent stars much closer than Venus—or even Mercury—is to the Sun. How does something that massive form so close to a parent star? Would there have been enough materi ...
GRADE-5-SCIENCE_REVISION_PAPER-THIRD_TERM-2014
GRADE-5-SCIENCE_REVISION_PAPER-THIRD_TERM-2014

... b. _________________ are formed from the pools of magma. c. The water cycle is also known as ___________________ cycle. d. Weathering helps shape ____________________. e. The path that Earth takes as it moves around the Sun is its ________________. f. The magma that reaches the surface of earth is c ...
Slide 1
Slide 1

Ch. 28 Sec. 1
Ch. 28 Sec. 1

... 1. Composed primarily of elements that resist vaporization 2. No satellite formation ...
Midterm - Department of Physics and Astronomy
Midterm - Department of Physics and Astronomy

PowerPoint Presentation - Planetary Configurations
PowerPoint Presentation - Planetary Configurations

... Interaction of Matter and Light • Absorption: Occurs when a photon of the correct energy moves an electron from a lower orbit to an upper orbit. • Emission: Occurs when an electron drops from an upper orbit to a lower one, thereby ejecting a photon of corresponding energy • Ionization: Occurs when ...
Compare the following sets of stars using the words: BRIGHTER or
Compare the following sets of stars using the words: BRIGHTER or

... through waves 9. How do scientists know what elements are in stars? By looking at the star spectrums for known elements using a spectroscope. ...
7.4 Meet Your Solar System
7.4 Meet Your Solar System

... • The planets share many similar characteristics, but they also have many differences. • The inner, or terrestrial, planets are rocky and small. The outer planets, or gas giants, are made of gases and are huge. • The astronomical unit is defined as the average distance between Earth and the Sun. ...
Study Guide for Astronomy
Study Guide for Astronomy

... Ptolemy – developed the Earth-centered theory of universe (called Geocentric) Copernicus – developed the Sun-centered theory of universe (called Heliocentric) Day – length of time it takes Earth to rotate once on its axis, approximately 24 hours Month – length of time it takes the moon to orbit once ...
Chapter 25.1: Models of our Solar System
Chapter 25.1: Models of our Solar System

... 2. Saturn is 10 x farther from the sun than Earth. What is the distance between Saturn and the sun in AU? In kilometers or miles? (show your work) 3. The Andromeda galaxy is 2.5 million light years away. How long does it take the light from Andromeda to reach us ? ...
Chapter 25.1: Models of our Solar System
Chapter 25.1: Models of our Solar System

... 2. Saturn is 10 x farther from the sun than Earth. What is the distance between Saturn and the sun in AU? In kilometers or miles? (show your work) 3. The Andromeda galaxy is 2.5 million light years away. How long does it take the light from Andromeda to reach us ? ...
File - Teaching Through E
File - Teaching Through E

... • The crust varies considerably in thickness – It is thinner under the ocean – Thicker under the continents ...
Chapter 25.1: Models of our Solar System
Chapter 25.1: Models of our Solar System

... 2. Saturn is 10 x farther from the sun than Earth. What is the distance between Saturn and the sun in AU? In kilometers or miles? (show your work) 3. The Andromeda galaxy is 2.5 million light years away. How long does it take the light from Andromeda to reach us ? ...
Topic 3 – Waves and the Universe
Topic 3 – Waves and the Universe

... (still no direct evidence of life on Mars at present, though) Beyond the Solar System: Scientists have discovered planets orbiting other stars (in a similar way that planets orbit the Sun in our Solar System), but they are too far away... o Telescopes can’t produce clear images o Space landers or sp ...
High School Lab Earth Science Standards
High School Lab Earth Science Standards

... may have been established during the formation of the solar system. b. The evidence from Earth and moon rocks indicates that the solar system was formed from a nebular cloud of dust and gas approximately 4.6 billion years ago. c. The evidence from geological studies of Earth and other planets sugges ...
Topic 3 notes - WordPress.com
Topic 3 notes - WordPress.com

... (still no direct evidence of life on Mars at present, though) Beyond the Solar System: Scientists have discovered planets orbiting other stars (in a similar way that planets orbit the Sun in our Solar System), but they are too far away... o Telescopes can’t produce clear images o Space landers or sp ...
PDF
PDF

... On the 23 July 2015, NASA announced the discovery of Kepler-452b, the first exoplanet similar in size to our own planet (about 60% larger than Earth), orbiting around a star similar to our Sun (Kepler 452 is a G2V-type star) at about the same distance between Earth and Sun, within the habitable zone ...
13. Two World Views. I. The Ptolemaic System
13. Two World Views. I. The Ptolemaic System

2nd Semester Exam Study Guide
2nd Semester Exam Study Guide

... 18. Heat and pressure would change a sedimentary rock to an igneous rock. Melting and cooling form igneous rock. 19. Streets and highways are damaged more in the winter than the summer because physical weathering, such as “frost wedging” is more common 20. The matter phase at the inner core is “soli ...
Lesson 1 | Scientific Inquiry
Lesson 1 | Scientific Inquiry

... 1. The inner planets are those closest to the Sun. 2. The inner planets are made of rocky and metallic materials. a. Because of its small mass, Mercury’s gravity is not strong enough to hold gases to its surface. b. Venus is covered by a thick layer of clouds. c. The high temperatures on Venus are c ...
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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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