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R E P O R T 5 - WordPress.com
R E P O R T 5 - WordPress.com

... • (Fossil organisms succeed one another in a definite and determinable order; and therefore any time period can be recognized by its fossil content.) • Index fossils - these fossils are widespread geographically and are limited to a short span of geologic time, so their presence provides an importan ...
is there life out there? - Bentonville Public Library
is there life out there? - Bentonville Public Library

... • For life to exist, we think that you need liquid water, organic molecules, an energy source, a catalytic surface to kick start a biological process and time • Therefore, other life in the Universe will, in all probability, be based on the same processes ...
Distances in space
Distances in space

... The real name of an Au is an Astronomical unit, a unit of distance, equal to the mean distance of the earth to the sun 149,597,870km.Ther are different ways to measure the distances in space Au's are one of them the other one is light-years. How far is the closest star in light-years? The closest st ...
Observing the Sky - University of Northern Iowa
Observing the Sky - University of Northern Iowa

Quantum Well Electron Gain Structures and Infrared Detector Arrays
Quantum Well Electron Gain Structures and Infrared Detector Arrays

... 700 K (day) = 800 F 100 K (night) = -280 F • what little atmosphere there is comes from solar wind particles (Hydrogen and Helium) ...
Life and Earth Science Vocabulary 2015
Life and Earth Science Vocabulary 2015

... Planet Order (3.8D); Characteristics of Sun, Earth, and Moon, and Patterns in Moon Phases and Tides (5.8C and 4.8C) Sun: average sized star made of hot gases found at the center of our solar system Earth: the only planet with life; Earth has an atmosphere, weather, and liquid water Moon: Earth’s na ...
File
File

star guide 2013
star guide 2013

... dust bound together by gravity. Our own Milky Way Galaxy contains several hundred billion stars. ...
How does the earth orbit the sun?
How does the earth orbit the sun?

... 25. Gravity keeps the ____________________ moving around the earth. It also keeps the planets moving around the _______________________. In the spaces provided write “True” if the sentence is true. Write “False” if the sentence is false. 26. _________ The planets move in circular orbits around the s ...
Space Interactive Internet Scavenger Hunt
Space Interactive Internet Scavenger Hunt

... death of a star, though no such star has yet been discovered, making it only a hypothetical possibility. Scientists believe it would take a star such as the sun over 14 billion years to reach the black dwarf stage, a period of time greater than the estimated age of the universe. If black dwarfs were ...
Stars in our Galaxy
Stars in our Galaxy

Space
Space

... Sun: the centre of our solar system, 110 times wider than the Earth. The solar system can be divided into two planetary groups: the Earth like (terrestrial) planets and the outer or Jovian planets. Terrestrial planets: smaller, rockier, closer to the Sun. Jovian planets: large and gaseous, located g ...
Navigating by the Stars
Navigating by the Stars

... e prhttp://www.space.com/5849-navigating-stars.htmloportional to the star formation rate, though this makes technical sense. (The product of all the terms except L tells how many new communicating civilizations are born each year. Then you multiply by the lifetime to get the expected number. For exa ...
Chapter 2 Discovering the Universe for Yourself What does the
Chapter 2 Discovering the Universe for Yourself What does the

... When can eclipses occur? •  Solar eclipses can occur only at new moon. •  Solar eclipses can be partial, total, or annular. ...
Monday, December 8 - Otterbein University
Monday, December 8 - Otterbein University

... Figure 2 shows a horizon view of what you would see when facing south at midnight on the night of December 1 in the northern hemisphere. How would this view change if you were to look towards south at midnight a month earlier? a. You would have the same view as on December 1 because it still is aut ...
In the Shadow of the Earth
In the Shadow of the Earth

... In the better-known Total Solar Eclipse, a rare alignment of the Sun, Moon, and Earth occurs, where the Moon will completely block out the Sun’s light for a very small portion of the Earth’s surface. In a Total Lunar Eclipse, the opposite occurs, whereby the Earth comes between the Sun and the Moon. ...
Chapter 3 Section 2 (pgs 68-73) the sun`s outer atmosphere – this is
Chapter 3 Section 2 (pgs 68-73) the sun`s outer atmosphere – this is

... What are some advantages for the reflecting telescopes? 1. By using mirrors instead of glass, the size of the telescope can be of any size. 2. The mirrors are able to focus all colors of light to the same focus point and will ...
Science 8
Science 8

... principal ...
Midterm 1 Completion What is the official name of the special star
Midterm 1 Completion What is the official name of the special star

... which gets heated up and produces infrared light. The infrared light cannot pass through the carbon dioxide atmosphere so it gets trapped. The trapping of infrared light by the carbon dioxide gases causes Venus to heat up to very high temperatures (900 deg) and makes it even hotter than Mercury. Not ...
The Life Cycle of Stars
The Life Cycle of Stars

... The Death of a Star After spending approximately 10 billion years as a main sequence star, a star’s available hydrogen will have been converted to helium by nuclear fusion. -> helium-rich core->less hydrogen to burn->core begins to contract->heats the core->fusion restart in the outer layer->outer ...
ISP 205: Visions of the Universe
ISP 205: Visions of the Universe

Constellations
Constellations

... during specific seasons This is due to earth’s rotation around sun and tilt of the earth Lyra in summer ...
d Transparent Deception In yet Another Alleged Extra
d Transparent Deception In yet Another Alleged Extra

... announced the discovery of a fifth planet around the star 55 Cancri, which is 41 light years away in the constellation Cancer. The find makes that star system the most heavily populated one known other than our sun's and raises to 265 the total of extra solar planets since astronomers began discover ...
Jupiter - Trimble County Schools
Jupiter - Trimble County Schools

... Rate of revolution: 11.9 Earth years ...
Planetary Portraits - a Nature News Feature.
Planetary Portraits - a Nature News Feature.

... by Gary Melnick, also at the Harvard-Smithsonian Center for Astrophysics. Launched from the space shuttle into Earth orbit, it would use a 1.5-metre-square aperture to take long exposures of 160 or more stars that are similar in age to our Sun and situated within about 50 light years of Earth. Melni ...
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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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