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Astronomers have discovered what they say is the mightiest neutron star yet.
The super-dense object, which lies some 3,000 light-years from Earth, is about twice as massive as our Sun.
That is 20% greater than the previous record holder, the US-Dutch team behind the observation tells the journal Nature.
Like all neutron stars, the object's matter is packed into an incredibly small space probably no bigger than the centre of a big city like London.
BBC News - Neutron star packs two Suns' mass in London-sized space
The super-dense object, which lies some 3,000 light-years from Earth, is about twice as massive as our Sun.
That is 20% greater than the previous record holder, the US-Dutch team behind the observation tells the journal Nature.
Like all neutron stars, the object's matter is packed into an incredibly small space probably no bigger than the centre of a big city like London.
BBC News - Neutron star packs two Suns' mass in London-sized space
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