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.
Nasa hoped to launch Hubble in 1983, but the schedule slipped. The team was about ready in 1986 when Nasa suffered one of the greatest blows in its history. On 28 January that year, the space shuttle Challenger disintegrated over the Atlantic Ocean, killing its crew of seven.