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Astronomical history
Astronomical history

... (a) Use the diagram to describe Ptolemy’s model of the universe. Ptolemy’s theory of earth place in the universe was called a geocentric model. This means that he thought that the earth was at the centre of the universe. This also explained to the people about how in religion “god” had made the eart ...
Are We Alone in the Universe?
Are We Alone in the Universe?

... ✤ Kepler 186f may be tidally locked, like the Moon is to Earth! When Kepler 186f transits it sun! ✤ We can look for the change in the light of the star! ✤ How that light changes may give information about its atmosphere! ✤ NASA is studying how Earth would look from a distant star ...
Solar System topics
Solar System topics

... Pluto was discovered in 1930 by the American astronomer Clyde Tombaugh. It was the culmination of a many-year search at Lowell Observatory in Flagstaff, Arizona. It was regarded as an official planet until 2006. Now it is considered a dwarf planet. To be regarded as a planet an object must: 1) orbi ...
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File

... Despite having neuromuscular dystrophy, which limits his ...
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... 12. The stars seem to move from west to east because Earth is rotating on its axis. F 13. Earth orbits around the Sun. T 14. Earth is the only known planet in which water can exist in gas, solid, and liquid form. T 15. The four outer planets are surrounded by rings and have many moons. T 16. The fou ...
Name: Date: Pre-Test Outcome 8: Astronomy Base your answer to
Name: Date: Pre-Test Outcome 8: Astronomy Base your answer to

... The diagram represents the Moon at different positions, labeled A, B, C, and D, in its orbit around Earth. 10. At which two Moon positions would an observer on Earth most likely experience the highest high tides and the lowest low tides? (1) A and B (2) B and C (3) C and A (4) D and B 11. Which star ...
General Science Class: ______ Earth Science
General Science Class: ______ Earth Science

... 19. Explain why scientists might be interested in knowing when the sunspot cycle is at its peak? 20. How do scientists classify galaxies? 21. What makes up the Milky Way Galaxy? 22. Define: quasars 23. Why is a nebula important to the life of a star? 24. Discuss how balanced forces and unbalanced fo ...
Extra-Solar Planets
Extra-Solar Planets

... A planet needs the right star! Constraints on star systems: 1) Old enough to allow time for evolution (rules out high-mass stars - 1%) 2) Need to have stable orbits (might rule out binary/multiple star systems - 50%) 3) Size of “habitable zone”: region in which a planet of the right size could have ...
Largest moon in the solar system
Largest moon in the solar system

... Large rotating hurricane called the Great Red Spot. (2 Earth sizes) 4 faint rings in orbit. 2.5 times greater in mass than all of the other planets combined. Has at least 63 natural satellites, 4 largest are known as the Galilean Moons. The Great Red Spot has been observed for over 300 years! ...
Mountain Skies - Pisgah Astronomical Research Institute
Mountain Skies - Pisgah Astronomical Research Institute

... close to the sun in the morning twilight as back in January. Venus was in conjunction behind the sun on June 6 and Mercury follows suit this coming Wednesday. Since Mercury moves much faster, it will catch up with Venus and the two will be less than a degree apart on July 16. The dedicated observer ...
Our solar system includes the sun and the eight
Our solar system includes the sun and the eight

... of swirling gas that has lasted for hundreds of years. Jupiter does not have a solid surface - it is made up of gases. The bands that we see when looking at Jupiter are the tops of clouds high in its atmosphere. Saturn is the second largest planet in the Solar System. It has wide rings around its ce ...
The solar system - MissWilsonastrounit
The solar system - MissWilsonastrounit

... What is the name of Saturn’s largest moon, and why can it be compared to Earth? ...
Chapter 29 Our Solar System
Chapter 29 Our Solar System

... is the planet most similar to Earth in physical properties, such as diameter, mass, and density. ...
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Chapter 2 Assignment GEarthOL

... Self-Reflection Survey: Section 2.1 (page 27) Answer the questions below as a means of uncovering what you already know about Earth’s position in space. #1: Explain how we are influenced by Earth’s position in space on a daily basis. ...
Homes for life
Homes for life

... It assumes liquid water has to be stable on the surface, and ignores possible sub-surface oceans (e.g. Europa). It assumes that the primary energy source is incident stellar radiation, ignoring tidal forces as an energy force (e.g. Io and Europa). ...
What is the universe???
What is the universe???

... Label one “Earth” and the others A-D (these represent other galaxies) • Partially inflate the balloon (1-2 big breaths) and hold it…do not tie it! Use a piece of yarn to measure the distances at time 1, convert to centimeters using your ruler, and record • Repeat for time 2 and 3, then answer ...
Planet Earth – Could There be Life?
Planet Earth – Could There be Life?

... poor candidates for hosting life  The Sun is relatively stable!  Solar variation is ~.1% over 11- ...
Planet Earth – Could There be Life?
Planet Earth – Could There be Life?

... poor candidates for hosting life  The Sun is relatively stable!  Solar variation is ~.1% over 11- ...
Origins of the Universe
Origins of the Universe

... • A group of stars that form a pattern in the sky • Stars of a constellation are often far apart from each other, but they appear grouped together when viewed from Earth • One of the 88 sectors into which astronomers divide the sphere of the skynamed after a traditional constellation in that sector ...
The Solar System
The Solar System

... • Jupiter's clouds are no more then 50 km in thickness. •Jupiter is one of the solar systems 4 gas giant planets; it has no rocky surface {the others are Saturn, Uranus and Neptune}. ...
Space
Space

... in our solar system. It is the largest object and contains approximately 98% of the total solar system mass. One hundred and nine Earths would be required to fit across the Sun's disk, and its interior could hold over 1.3 million Earths. The Sun's outer visible layer is called the photosphere and ha ...
Saraswati River - Ancient Greece
Saraswati River - Ancient Greece

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Adobe Acrobat - Ancient Greece

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37) What is the largest planet in the solar system?
37) What is the largest planet in the solar system?

... A) Estimate how many possible planets in our solar system may have life B) Estimate how many possible intelligent, communicating civilizations there are in our galaxy. C) Estimate how many possible intelligent, communicating civilizations there are in our universe D) Estimate how many possible organ ...
1 - WordPress.com
1 - WordPress.com

... 7. What are the two groups into which we divide planets? ...
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Extraterrestrial life



Extraterrestrial life is life that does not originate from Earth. It is also called alien life, or, if it is a sentient and/or relatively complex individual, an ""extraterrestrial"" or ""alien"" (or, to avoid confusion with the legal sense of ""alien"", a ""space alien""). These as-yet-hypothetical life forms range from simple bacteria-like organisms to beings with civilizations far more advanced than humanity. Although many scientists expect extraterrestrial life to exist, so far no unambiguous evidence for its existence exists.The science of extraterrestrial life is known as exobiology. The science of astrobiology also considers life on Earth as well, and in the broader astronomical context. Meteorites that have fallen to Earth have sometimes been examined for signs of microscopic extraterrestrial life. Since the mid-20th century, there has been an ongoing search for signs of extraterrestrial intelligence, from radios used to detect possible extraterrestrial signals, to telescopes used to search for potentially habitable extrasolar planets. It has also played a major role in works of science fiction. Over the years, science fiction works, especially Hollywood's involvement, has increased the public's interest in the possibility of extraterrestrial life. Some encourage aggressive methods to try to get in contact with life in outer space, whereas others argue that it might be dangerous to actively call attention to Earth.
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