A Saturday night out, 260 miles above London

Experts and luminaries in science, business and entertainment will assemble at simultaneous press conferences in San Francisco & London on 3rd December to officially unveil Asteroid Day 2015, a global day of public awareness about asteroids and the threat they pose to humanity.

A NASA instrument built to help astronomers learn about the structure and behaviour of neutron stars, super-dense stellar skeletons left behind by massive explosions, has been mounted to an observation post outside the International Space Station after delivery aboard a SpaceX supply ship earlier this month.

Astronomy Now Online brings you a powerful interactive global Almanac and UK-based all-sky star maps — the first of a new suite of tools to help plan your observing sessions and travel.