Today we talk with Mark McCaughrean, the European Space Agency's Senior Scientific Advisor for space science missions about Rosetta, a spacecraft that has been sent to the far reaches of our solar system to closely study the comet 67P/Churyumov-Gerasimenko or 67P/CG.  To save energy the Rosetta was put into hibernation for the last 31 months. The spacecraft will be roused from its slumber on Monday January 20th. Other stories we cover in today’s program… A new study released this past week is suggesting that caffeine can be used to boost our long-term memory. China has conducted an experimental flight of a hypersonic missile delivery vehicle designed to travel several times faster than the speed of sound. Retailers are looking at new technology to help them lure more customers. It’s summer in Australia, and according to a new report heatwaves there are becoming more common and severe.   Last month, China successfully landed an unmanned probe on the Moon.  The mission renewed a debate about the potential exploitation of the Moon's resources and who exactly owns the Earth's only natural satellite A California company has developed a new "smart spoon" that that they hope will help those living with Parkinson's Disease feed themselves.