20 Apr : Shuttle Discovery astronauts delayed their return to Earth until Tuesday after twice being waved off attempts to land in Florida because of rain and fog.
The shuttle will now aim to land at 7.33 am local US time or 1703 IST on Tuesday at the Kennedy Space Centre in Florida, but with rain and low clouds again in the forecast, NASA has also laid plans for a possible landing at Edwards Air Force Base in California.
NASA has said the shuttle and its seven member crew have enough provisions to remain in orbit until Wednesday if necessary.
Although its return to Earth was postponed by rain, the US space agency said Discovey faces no threat from a huge ash cloud spewed by an erupting Icelandic volcano, which has shut down air traffic over Europe.
Discovery lifted off on 5th April and docked with the space station two days later, overcoming a communications antenna failure that crippled their rendezvous radar.