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Habitable worlds with JWST: transit spectroscopy of the TRAPPIST
Habitable worlds with JWST: transit spectroscopy of the TRAPPIST

... (Irwin et al. 2008) to simulate transmission spectra of the TRAPPIST-1 planets, under the assumption that each of them could have an Earth-like atmosphere. NEMESIS couples a fast correlated-k (Goody & Yung 1989; Lacis & Oinas 1991) radiative transfer model with an optimal estimation retrieval algori ...
138KB - NZQA
138KB - NZQA

... travelling faster than Earth. This collision caused both planets to melt and the outer layers of both planets to be ejected into space. A disk of orbiting material was formed and this matter eventually stuck together and formed the moon that now orbits around Earth. The ejected rock (the moon) staye ...
58KB - NZQA
58KB - NZQA

... travelling faster than Earth. This collision caused both planets to melt and the outer layers of both planets to be ejected into space. A disk of orbiting material was formed and this matter eventually stuck together and formed the moon that now orbits around Earth. The ejected rock (the moon) staye ...
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... 3. What does that tell you about the direction of planet rotation? ...
A105 Stars and Galaxies
A105 Stars and Galaxies

... How do we find them What are they like? How are they similar to our solar system? How do they differ What kinds of stars have planets? ...
Phys 214. Planets and Life
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... with one pair surrounded by a disk of dust. Recent data from the Earth-trailing Spitzer Space Telescope in infrared light, indicate that the dust disk has gaps consistent with being cleared by planets orbiting in the disk. If so, one planet appears to be orbiting at a distance similar to Mars of our ...
Lecture 34: Habitable Zones around Stars
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... patterns, and planets. a. Recognize the physical attributes of stars in the night sky such as number, size, color, and patterns. ...
The Stars and the Solar System
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... patterns, and planets. a. Recognize the physical attributes of stars in the night sky such as number, size, color, and patterns. ...
B. protostar - University of Maryland Astronomy
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... A. Jupiter, the Moon, Earth, a white dwarf, a neutron star B. the Moon, Earth, a white dwarf, Jupiter, a neutron star C. a neutron star, the Moon, Jupiter, Earth, a white dwarf D. the Moon, Earth, Jupiter, a neutron star, a white dwarf E. Jupiter, a neutron star, a white dwarf, the Moon, Earth 26. S ...
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... v  Parallax: apparent shift in the position of an object when view from two different locations. v  Parallax Example v  Can be used to measure the distance of stars from Earth that are relatively close. v  Proxima Centauri: closest star to earth v  (4.3 light years away – 40 trillion km) ...
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ASTR2050 Intro A&A NAMES:  ____________________ ____________________ Work sheet
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... Build a scale model of the solar system, including the sizes and orbital radii of the sun and planets. Most of the data you need can be found in Kutner, Appendices B and D, and Figure 17.3. Show the units in the following lists. 1. What celestial object did you use to set the scale, and what did you ...
Ch. 20 Classifying Objects in the Solar System
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... Directions: Label the name of each object or set of objects within the solar system on the lines provided in the diagram above. Then answer the questions below. 1. The Sun is considered a star because it is the only object in our solar system hot enough to undergo the process of ______________ _____ ...
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... consists of one or more planets approximately one to three times Earth’s size orbiting within a fraction of the Earth-Sun distance. In April 2013, using observations by NASA's Kepler Mission, a team led by William Borucki, of the agency's Ames Research Center, found five planets orbiting in the habi ...
The Solar System (Ch. 6 in text) The solar system consists of the Sun
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... detection. So far a few planets have been found this way, but it had already been discovered by radial velocity technique. 3. Transits (eclipses)—this is the most active approach at present, with over 30 groups trying varying strategies, and a major space mission (“Kepler”) planned for the near futu ...
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AST301.Ch6.15.SolarSystems - University of Texas Astronomy
AST301.Ch6.15.SolarSystems - University of Texas Astronomy

... detection. So far a few planets have been found this way, but it had already been discovered by radial velocity technique. 3. Transits (eclipses)—this is the most active approach at present, with over 30 groups trying varying strategies, and a major space mission (“Kepler”) planned for the near futu ...
Chapter 1 Our Place in the Universe
Chapter 1 Our Place in the Universe

... Earth orbits the Sun (revolves) once every year… • at an average distance of 1 AU ≈ 150 million km. • with Earth’s axis tilted by 23.5º (pointing to Polaris). • and rotates in the same direction it orbits, counterclockwise as viewed from above the North Pole. ...
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Lunar Data Comparison 3 – Sidereal vs

... this orbit of the Earth around the Sun is longer, in time and distance (about 22,000 miles), than the 360 degree tropical model of the Earth’s orbit around the Sun. Obviously, there cannot be two different circumferences of the Earths absolute 360 degree orbit around the Sun. The time period of this ...
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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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