(The satellite was launched in 1991 by the space shuttle Discovery, it was decommissioned 2005. Nasa has warned there could be a 500-mile trail of debris, and, according to the Guardian, calculations put the British Isles within the impact path. The odds of being hit by a piece of flying debris are 3,201 against, but this means you are 4,000 times more likely to be hit by space debris, than to win the National Lottery in the UK. Cheerful thought.)
Update - it crashed into the ocean off the US coast, so anyone who clicked on "scary", you can relax now - until the next time. 🙂