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.
In 2006, Americans commemorated the crew of space shuttle Challenger 20 years after they died while taking off for space on January 28, 1986. Seven crew members, including New Hampshire schoolteacher Christa McAuliffe, had been killed as Challenger blasted upward from Kennedy Space Center.