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The Hubble telescope has been peering into the depths of space to reveal the true colour of a planet orbiting another star. The exoplanet, called HD189733b, has a deep azure hue, which scientists think is the result of silicate (glass) rain in the atmosphere scattering blue light.

Stunning Hunting Sharks
Thresher sharks are partial to sardine meals and research shows that they stun their prey using their tails. But rather than connect directly, they use them like a bullwhip. The rapid tail slap isn’t always successful, but when it is numerous fish can be stunned at one time.

When Voices and Hearts Are in Tune
When choristers sing their voices harmonise and recent research has shown that their heart rates also synchronise. As we breathe in our heart rates increase and as we breathe out our heart rate slows so the heart rates of the singers follows the phrasing of the song.