Encyclopedia of the Solar System 2nd ed

860 Encyclopedia of the Solar System TABLE 8 A Comparison of GEx O 2 and LR^14 C Resultsa GEx O2 Oxidantb LR CO 2 Oxidantb Sampl ...

Astrobiology 861 pressures and low temperatures make it unlikely that water will exist as a liquid on Mars. Because of seasonal ...

862 Encyclopedia of the Solar System FIGURE 9 Blueberries. The triplet of connected spheres, dubbed blueberries, as seen in this ...

Astrobiology 863 after surface conditions became inhospitable. Liquid water could be provided by the heat of geothermal or volca ...

864 Encyclopedia of the Solar System and by inference the others as well, came from Mars. The fourth class of Martian meteorite ...

Astrobiology 865 to the polar oceans where sea ice diatoms perform pho- tosynthesis under the ice cover, there are perennially i ...

866 Encyclopedia of the Solar System 6.5 Asteroids Asteroids seem unlikely locations for life to have originated. Certainly they ...

Astrobiology 867 biological signature after several million years at depths to about 1 m below the surface ice. 8. Life about Ot ...

868 Encyclopedia of the Solar System FIGURE 11 Habitable zone (large rectangle) in terms of planetary temperatures and planetary ...

100-C 25-C 50-C 75-C C+M 50-C+M C+Y 50-C+Y M+Y 50-M+Y 100-M 25-M 50-M 75-M 100-Y 25-Y 50-Y 75-Y 100-K 25-K 25-19-19 50-K50-40-40 ...

870 Encyclopedia of the Solar System 2. Program Evolution 2.1 Launch Services Sputnik, orbited on 4 October 1957, galvanized a h ...

Planetary Exploration Missions 871 FIGURE 1 Saturn V and N-1: The two largest rockets ever built. the policy called for continuo ...

872 Encyclopedia of the Solar System (a) (c) (b) FIGURE 2 Deep Space Network (DSN) stations today are in (a) California, (b) Spa ...

Planetary Exploration Missions 873 scientists can now reside at their home institutions and par- ticipate in missions in real ti ...

874 Encyclopedia of the Solar System or the Sun itself. Some were errant vehicles from plane- tary misses. The notablePioneerser ...

Planetary Exploration Missions 875 FIGURE 3 The ESA/NASA Solar and Heliospheric Observatory (SOHO) orbits about the L1 Lagrangia ...

876 Encyclopedia of the Solar System confirmed that Mercury has a huge iron core reaching to two thirds of its outer diameter. ( ...

Planetary Exploration Missions 877 FIGURE 6 Magellanwas launched in 1989 into a series of orbits enabling it to map the entire p ...

878 Encyclopedia of the Solar System Galileo Earth Flybys En route to Jupiter (see Outer Planets section below) the Galileospace ...

Planetary Exploration Missions 879 FIGURE 7 Luna 9, a Soviet spacecraft, achieved history’s first successful lunar touchdowns, d ...