There’s a problem with Hubble – one of its major instruments, the Advanced Camera for Surveys, has stopped working. It’s thought that it’s a glitch produced by a cosmic ray hitting a chip and scrambling it, or a small power supply component popping before its redundancy date – a reboot should unearth the issue.

The Cassini probe has definitely been supplying some great data, for both scientists and the space-obsessed layman. Thanks to the benificence of NASA, you can see pictures and video clips of Saturn’s moons moving on their orbital paths around the ringed gas giant.

Barely a day goes by without someone somewhere touting a new use for nanotechnology that’s going to revolutionise some aspect of modern life, and change our world for the better. So what have InvoSense decided to use their new nanogyroscopes for? Steadying cameraphone lenses. In their defense, there’s a guaranteed market for it, but how prosaic can you get?

The website for GreenLeaf Market is a bit shy on the details, but WorldChanging fills in some of the gaps. GreenLeaf is an online auction market that makes it easier for supermarkets to buy smaller quantities of local agricultural goods. If it works it could be a real boon for local agriculture and healthy eating alike.

I love little hacks like this one (uses your PowerBook keyboard backlight as a visualizer for iTunes) or this one (ties the keyboard backlight to the CPU load).