And it may encode some information about the past of a super massive black hole.

NPR: What Makes Our Solar System Special?

It is expected to underline warnings of a massive black hole at the heart of Britain's pensions.

BBC: Mr Hutton is seen as ultra-loyal to Tony Blair

Liberal Democrat councillor John Marriott said the authority's plans to use reserves could lead to a massive black hole in funding, which could eventually lead to higher taxes and cuts.

BBC: Lincolnshire County Council: Tax frozen for third year

That's why an event such as GRB130427A probably signals the collapse of a massive star into a black hole.

CNN: Why gamma-ray burst shocked scientists

But despite being millions of times more massive than our own Sun, the black hole at the centre of our galaxy would be relatively small in cosmic terms.

BBC: By BBC News Online Science Editor Dr David Whitehouse

Depending on its initial mass, it might collapse to a compact hot star known as a white dwarf (when the star's mass is less than 1.4 times the mass of our sun) or to a neutron star (for stars 1.4 to about three times the mass of our sun) or to a black hole (for stars more massive than three times the mass of our sun).

CNN: Why gamma-ray burst shocked scientists

Like a black hole, a wormhole would be a massive gravitational space and time warping object.

CNN: Time travel: Can it really be done?

"Our" black hole is relatively small "only" four million times as massive as the sun.

WSJ: Book Review: Gravity's Engines