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.
In 1975, they began working on developing the Hubble Space Telescope. The name Hubble comes from the famous astronomer Edwin Hubble. Born on Nov. 29, 1889, Hubble was first a well-known boxer and then a lawyer before he returned to science and worked at the Mount Wilson Observatory in California.