Rocket launches at Sunrise or Sunset produce light shows known as 'Twilight Phenomena'.

This is caused by unburned fuel particles freezing and scattering across the sky where they diffract light in the colourful ribbons seen above.

Humans and honeybees live at different speeds. Not only is a bee's life usually briefer and busier, but she also experiences it in slow motion, letting her live every second a little longer than we do.

Our brains can't keep up with a honeybee's wings, for example, so her 200 flaps per second become a blur and "bzzz." But our brains have other talents, like inventing high-speed video cameras or ignoring the pain of beestings to record with such cameras inches away from an active honeybee hive.

The latter feat was recently accomplished by photographer Michael N. Sutton, who endured three stings while filming super high-speed video of honeybees at an apiary near his home in New Hampshire. The result, titled "Apis Mellifera: Honey Bee," reveals the insects at thousands of frames per second, capturing individual wing flaps and even the way a bee's feet gently sway as she flies.

Astronomers believe the rough, icy surface of Jupiter's moon, Europa, is the most likely place in the solar system to harbour alien life.

Now Nasa has set aside £14.6 million ($25 million) to design probes that could reveal whether Europa is, in fact, habitable.

The agency yesterday asked scientists to come forward with potential experiments for a Europa probe that could be launched in the 2020s and arrive at the icy satellite within three years of take-off.