Morning all. Simon Jeffery is keeping an eye on the European Space Agency's Huygens probe as it closes on Saturn's moon Titan, while Paddy Allen explains how the probe works in an interactive graphic. We're also reporting on the latest tsunami relief efforts in Aceh, where anti-malaria spraying has begun.
Meanwhile Ros Taylor has gone to see a training session organised by the Iraq Out-of-Country Voting Programme for Iraqi polling staff who will help the expat vote run smoothly, and Adam Jay will be hearing a speech by US homeland security secretary Tom Ridge on the role international partnerships play in dealing with the threat from al-Qaida and other groups.
In preparation for Sunday's musical landmark - the unveiling of the 1,000th UK number one single - our resident newsdesk muso, Jon Dennis, has devised a fiendishly difficult number ones quiz to test your musical mettle. If that all sounds a little too like hard work for a Friday, Guardian Unlimited Arts will be confirming the news we've all been dreading - that Busted are to split.
Sunday is also the 400th anniversary of the publication of Don Quixote, and Sean Clarke will be investigating how Cervantes' masterpiece spawned the genre of the double act.
Here on Newsblog, we'll be posting Belle de Jour's answers to your questions about blogs, her new novel and why she's not Lisa Hilton. And I'll be looking at the debate over whether vigilant gardeners who kill slugs and snails in their garden could fall foul of the new animal welfare legislation.
