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 Disaster occurred on January 28, 1986, when the NASA Space Shuttle Challenger broke up 73 seconds after liftoff. All seven crew members were killed. The cause of the explosion was a part called an O-ring that broke in the right solid rocket booster.