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Homework 4 1 Chapter 3 October 4, 2011
Homework 4 1 Chapter 3 October 4, 2011

... two types of planets. They are located closer to the sun and are composed primarily of rock and metal. They have fewer moons than jovian planets and no rings. They also have a solid surface. jovian planets are larger, more massive, and less dense than terrestrial planets. They are composed primarily ...
Mountain Skies March 7 2016
Mountain Skies March 7 2016

... Mercury in the evening sky, Jupiter is rising right about sunset. Look for it low in the east as the sun sets in the west. Until a waxing crescent moon enters the evening sky later this week, Jupiter is the brightest object in the evening sky. In fact, tonight Jupiter is at opposition which means it ...
Homework 1 – Exercise 1 1/9
Homework 1 – Exercise 1 1/9

... In 1672, an international effort was made to measure the parallax angle of Mars at the time of opposition, when it was closest to Earth. Consider two observers who are separated by a baseline equal to Earth’s diameter. If the difference in their measurements of Mars’s angular position is 33.6’’. Wha ...
Search for Life in the Universe
Search for Life in the Universe

... – Extrasolar planets around main sequence stars discovered in 1995 – Planets around neutron stars discovered previously – Spectroscopy (>100 cases): detect Doppler shift of stellar motion around center of mass ...
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... • The radii are between about 4 and 11 times that of Earth. • The masses are between 14 and 318 times that of Earth. • However, the densities are between 0.7 and 1.8 grams/cc, and the albedos are high. • The planets are composed of light elements, mostly hydrogen and helium. ...
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five minute episode script

... ...
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... 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 greater distances from the Sun with small ...
Pocket Solar System
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The Hubble Deep Field (HDF)
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... over ten consecutive days between December 18 and December 28, 1995. The field is so small that only a few foreground stars in the Milky Way lie within it; thus, almost all of the 3,000 objects in the image are galaxies, some of which are among the youngest, and most distant, known. ...
The Hubble Deep Field (HDF)
The Hubble Deep Field (HDF)

... over ten consecutive days between December 18 and December 28, 1995. The field is so small that only a few foreground stars in the Milky Way lie within it; thus, almost all of the 3,000 objects in the image are galaxies, some of which are among the youngest, and most distant, known. ...
Slide 1 - leslie09
Slide 1 - leslie09

... • The moon is are nearst neghibor in space. • The moon does not make its own light. New moon means no moon that we can see. Over 300 years ago a guy looked in a telascope for the first time!! Neil Armstrong was the first person to walk on the moon!!!!! ...
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Earth-sized planet found just outside solar system

... Alpha Centauri is one of the brightest stars in the southern skies and is the nearest stellar system to our Solar System—only 4.3 light-years away. It is actually a triple star—a system consisting of two stars similar to the Sun orbiting close to each other, designated Alpha Centauri A and B, and a ...
spring_2002_final - University of Maryland Astronomy
spring_2002_final - University of Maryland Astronomy

... D. the 200 inch telescope to make very long exposures. E. the Voyager spacecraft, which now orbit galactic center 31. If humans do make contact with an intelligent extraterrestrial civilization in another star system using radio telescopes, which of the following is most likely to be true? A. The ci ...
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... This 10% increase in the sun’s brightness, triggering the evaporation of our oceans, will occur over the next billion years or so. Predictions of exactly how rapidly this process will unfold depend on who you talk to. Most models suggest that as the oceans evaporate, more and more water will be pres ...
The Sun and Beyond - Valhalla High School
The Sun and Beyond - Valhalla High School

...  Our universe is 25 billion light years in diameter and 13-15 billion years old  closest star to us is Proxima Centauri- 4.22 light years away ...
PowerPoint Presentation - msharnack
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... What is the best observation that can be made? A. The Sun is larger than Earth. B. The Sun is larger than Jupiter. C. All of the planets are smaller than the Sun. D. All of the planets are larger than the Sun. ...
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Chapter 15 Notes - Valdosta State University
Chapter 15 Notes - Valdosta State University

... Currently the Earth’s North Pole points to the star Polaris In about 12,000 years the Earth’s North Pole will point towards the star Vega which will then be the North Star. ...
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... • Asteroids are small solid objects that orbit the Sun. • They are sometimes called minor planets. • The Asteroid Belt is located between Mars and Jupiter is made up of 5,000 asteroids. ...
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... 1. All the orbits of the planets are prograde a. Rotates counterclockwise if viewed from the North Pole of the sun 2. All planets have orbital planes that are inclined by less than 6° 3. Terrestrial planets are dense, rocky and small; Jovian planets are gaseous and ...
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Exoplanet Discoveries and the Fermi Paradox
Exoplanet Discoveries and the Fermi Paradox

... of one thousand to 100 million, with the nearest being perhaps 80-800 light years away. With Drake’s numbers, it appeared that we should hear from the extraterrestrials rather soon; but after half a century of watching and listening, we have no evidence of them. The recent astronomical evidence for ...
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... The classroom contains roughly 20 fifth graders. The genders in the classroom are about even. These students have had one prior lesson on the solar system and its planets which was presented in a lecture form, with pictures, by the teacher. The setting of the school is rural. 5.2.1 Recognize that ou ...
Study Guide #3 Answer Key
Study Guide #3 Answer Key

... Lacerta, Cygnus, Vulpecula, Sagitta, Aquila, Ophiuchus, Scutum, and back to Sagittarius. The Milky Way looks brightest in the direction of the constellation of Sagittarius, toward the galactic center. Relative to the celestial equator, it passes as far north as the constellation of Cassiopeia and as ...
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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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