14 April 2015
The comet being trailed through space by Europe's Rosetta probe has no magnetic field of its own - an important observation in the understanding of how the icy dirt-ball formed billions of years ago.
Solar Impulse, the fuel-free aeroplane, heads out of Myanmar and on to China on leg five of its attempt to fly around the world.
US astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko arrive for a 12-month tour of duty on the International Space Station.
A light bulb made with graphene - said by its UK developers to be the first commercially viable consumer product using the super-strong carbon - is to go on sale later this year.
What are the justifications for the £4bn Large Hadron Collider?
What does where you live say about you?
What drives people to murder-suicide?
Stephen Fry asks if we should save daylight saving
China's endangered Ili Pika goes viral
The facts and myths of serial murderers, from a former police chief
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