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.
It was the lack of political will to give NASA more money.. The space shuttle Discovery launched on its STS-31 mission on April 24, 1990 at 8:33 a.m. EDT. The mission featured the deployment of the Hubble Space Telescope, the first of NASA's Great Observatories to reach orbit.