Lab notes: extraterrestrials, geeks and cats rule this week in science

Is there life on other planets? Probably. The list of Earth-like planets just keeps growing and growing. Nasa's Kepler telescope has recently found 10 more Earth-like planets, so it is now known that there are around 50 worlds of a similar size and temperature as our own. Prompting one Kepler programme scientist to conclude that it's highly likely: 'we are not alone.'