index Note: Page numbers in italics refer to entries in the Glossary. 1RXS J160929.1-210524, 160 2M1207b, 157 2MASS (Two Micron All Sky Survey), 135 2MASSW J1207334-393254 (2M1207), 155­57 16 Cygni B, 76, 78, 87 26-meter radio dish (Green Bank), 225 47 Ursae Majoris, 76 51 Pegasi, 70­75, 79­81 55 Cancri, 76, 86 61 Cygni, 51, 55 70 Ophiuchi, 47­50, 55 angular resolution, 229 ANSMET (Antarctic Search for Meteorites) program, 38­39 AntarcticMeteoriteNewsletter, 40 arcminute, 229 arcsecond, 229 Aristotle, 3 Arnold, Luc, 210 Artigau, Etienne, 128 Asimov, Isaac, 179 asteroids, 147, 229 astrobiology, 203, 214­18; stellar type variations and, 219­20 astrometry, 50, 56, 229; failure of,