Hubble views an old and mysterious cluster

The NASA/ESA Hubble Space Telescope has captured the best ever image of the globular cluster Messier 15, a gathering of very old stars that orbits the centre of the Milky Way. This glittering cluster contains over 100 000 stars, and could also hide a rare type of black hole at its center.

Astronomers reveal contents of mysterious black hole jets

An international team of astronomers has answered a long standing question about the enigmatic jets emitted by black holes, in research published today in prestigious journal Nature. Jets are narrow beams of matter spat out at high speed from near a central object, like a black hole.

Mysterious Centaurs may be comets

The true identity of centaurs, the small celestial bodies orbiting the sun between Jupiter and Neptune, is one of the enduring mysteries of astrophysics. Are they asteroids or comets? A new study of observations from NASA's Wide-field Infrared Survey Explorer (WISE) finds most centaurs are comets.

Pentagon investigates rogue missile launch

The Pentagon says it is investigating a possible rogue missile launch detected off the coast of Southern California.