At 9:24am GMT on 31 October 2016, near-Earth asteroid 164121 (2003 YT1) will safely fly by at a distance of 3.2 million miles (5.2 million kilometres), or 13.5 times the distance of the Moon. Furthermore, this 1.1-mile-(1.7-kilometre)-wide Apollo asteroid also passes very close to Polaris early on 2 November, creating a rare astrophotographic and observing opportunity.
The eerie glow of a dead star, which exploded long ago as a supernova, reveals itself in this NASA Hubble Space Telescope image of the Crab Nebula in the constellation of Taurus. But don’t be fooled. The ghoulish-looking object still has a pulse. Buried at its centre is the star’s telltale heart — a neutron star which beats with rhythmic precision.