It is currently Apr 20th, '14, 17:30
Nasa has released dramatic footage of a solar flare, captured by its Solar Dynamics Observatory.
The mid-level solar flare was emitted on 2 April, and reached peak intensity at 14:05 GMT.
Solar flares are powerful bursts of radiation, producing a sudden brightening on the sun's surface.
A Soyuz rocket has launched from French Guiana with the first satellite in the European Union's new multi-billion-euro Earth-observation programme.
The Sentinel-1a spacecraft is being put in orbit on a mission to map the planet's surface using radar.
It will be followed by a fleet of other satellites - also called Sentinels - over the next five years.
Brussels is describing its Copernicus programme as the biggest ever effort to characterise our world.
The evidence for an "ocean" of water under the surface of Saturn's moon Enceladus appears to be overwhelming.
The little world has excited scientists ever since jets of icy material were seen squirting into space from a striped region at its south pole.
Now, exquisite measurements using Nasa's Cassini probe as it flew over the moon have allowed researchers to detect the water's gravitational signal.
Science magazine reports the details.
"The measurements that ...
Synthetic biology has come a long way ...
Scientists from the UK and Switzerland have used very intense X-rays to film inside an insect's body as it flies.
The resulting footage - a 3D reconstruction made up of several X-ray snapshots - shows a blowfly's flight motor, the "muscles and hinges" that power flight.
Researchers say the insights could be useful for the design of micro air vehicles.
The results are published in the journal Plos Biology.
Dr Simon Walker from the University ...
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