5 January 2014
Triple star system 'can reveal secrets of gravity'
Astronomers have discovered a unique triple star system which could reveal the true nature of gravity.
They found a pulsar with two white dwarfs all packed in a space smaller than Earth's orbit of the Sun.
The trio's unusually close orbits allow precise measurements of gravity and could resolve difficulties with Einstein's theories.
http://www.bbc.co.uk/news/science-environment-25598051