Meteorology. a line drawn on a weather map or chart that connects points at which the barometric pressure is the same. Also, isobare [ahy-suh-bair] /ËaÉª sÉËbÉÉr/ (Show IPA). Physics, Chemistry. one of two or more atoms having equal atomic weights but different atomic numbers.
Hubble Essentials. With the Hubble Space Telescope on board, Discovery begins its roll maneuver after liftoff from Kennedy Space Center on April 24, 1990. This low-angle view of the launch shows the shuttle atop the external tank, flanked by two solid rocket boosters, as it rises into the sky.
Hubble floats above Earth; March 2002. Enlarge photo. Since the earliest days of astronomy, since the time of Galileo, astronomers have shared a single goal â to see more, see farther, see deeper. The Hubble Space Telescope's launch in 1990 sped humanity to one of its greatest advances in that journey.he Space Shuttle would be used to put the telescope in orbit and either return it to Earth for repairs and replacement instruments, or service it in space. In 1975, the European Space Agency began to work together with NASA on a plan that would eventually become the Hubble Space Telescope.