SPACE.com - Strangely, astronomers don't know how long a day is on Saturn, because they can't get a firm footing on the problem given the giant planet's gaseous nature.

Reuters - China's anti-satellite missile test in January sent a confusing message to the world about its military plans, the United States' top military officer said on Friday, urging Beijing to be more open.

Reuters - Rising sea levels and melting polar ice-sheets are at upper limits of projections, leaving some human population centers already unable to cope, top world scientists say as they analyze latest satellite data.

AFP - EU transport ministers threatened on Thursday to seek alternatives for completing the Galileo satellite navigation system unless the current consortium resolved key problems.

AP - Former astronaut Lisa Nowak's attorneys formally entered a not guilty plea Thursday to charges that she tried to kidnap a rival for a space shuttle pilot's affections.

Reuters - Former Microsoft software guru Charles Simonyi said on Thursday he was more nervous about public appearances than blasting off for a trip to the International Space Station aboard a Russian rocket.

AP - The Pentagon's top general arrived in Beijing Thursday on a visit that follows recent U.S. concerns over China's booming defense spending and the successful test of an anti-satellite weapon.