What are the decomposers in the underwater ecosystem? A: The decomposers in an underwater ecosystem are animal-like organisms called protists, fungi and bacteria. Referred to as saprotrophs, these organisms decom... Full Answer >
On 1 February 2003 the space shuttle Columbia exploded as it was attempting re-entry after a 16-day mission. All seven astronauts on board, including the first Israeli in space, were killed. Tributes to the astronauts were led by US President George W Bush.
A string of successful missions was broken in 1986 when Challenger disintegrated seconds after liftoff, killing its seven-person crew. The space shuttle program was suspended in the wake of the accident, and no shuttles were launched for nearly three years.