Download Astrobiologist by Mary Firestone PDF

By Mary Firestone

ISBN-10: 0791089711

ISBN-13: 9780791089712

Astrobiology is the research of existence within the universe. It comprises the fields of astronomy, physics, biology, geology, paleontology, etc, similar to microbiology. The interest of scientists who wonder whether existence exists someplace along with Earth has created this new technological know-how. due to the fact we won't but trip to different planets, astrobiologists needs to start with the one lifestyles we all know approximately: existence on the earth.

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Austin, TX: RaintreeSteck Vaughn, 2001. 61 FURTHER READING Books Nardo, Don. Extraterrestrial Life. Farmington Hills, MI: Lucent Books, 2004. Sherman, Joseph. Deep Space Observation Satellites. New York: Rosen Publishing Group, 2003. Skurzynski, Gloria. Are We Alone? Scientists Search for Life in Space. : National Geographic Society, 2004. gov 62 INDEX Explorer 1 16, 17 extraterrestrial life 15 extremophiles 9, 19, 23, 24, 25–26, 27, 28, 29 acidophiles 24 ALH84001 (meteorite) 29–31 Aliens of the Deep 7–9 alkophiles 24 Ames Research Center 41, 43 archaea 23–25 archaebacteria.

NASA’s exploration of the solar system involves the search for signatures of extraterrestrial life. To accomplish this, advances in in situ (which means “in a natural location”) science are needed, including landing instruments to take samples and analyze their physical and chemical properties. Instrument technologies for in situ planetary exploration could be used to study extreme environments on Earth as well, such as deep-sea vents, high-altitude environments, and locations in the Arctic Sea and Antarctica.

Within this spectrum are emission and absorption lines, the fingerprints of atoms and molecules. These show scientists what a material is made of. Each atom has a unique spacing of orbits and can emit or absorb only certain energies or wavelengths. This is why the location and spacing of lines is unique for each atom. Astronomers can learn a great deal about an object in space by studying its spectrum, such as what it is made of, its temperature and density, and its motion (both its rotation and how fast it is moving toward or away from us).

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