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.
The space shuttle Challenger is lost just after liftoff on this day in 1986, killing the seven astronauts aboard. The Challenger was the second shuttle built by the National Aeronautics and Space Administration (NASA). It took its first flight into space on April 4, 1983, and made a total of nine...