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.
O-rings are used to seal connections. The space shuttle Challenger was destroyed shortly after liftoff on January 28, 1986, killing all seven astronauts onboard. The Space Shuttle Challenger disaster was caused by the failure of an O-ring seal.