This is Centauri Saga by Vesuvius Media. This copy has never been used; the cardboard push-outs are still in their original frames. In as-new condition.

From a non-smoking Home. Despatched with Royal Mail Tracked 48.

The rulebook doesn't say "v1.5" anywhere on it, and it has a publishing date of 2016 on the rear (and the box says 2015). So I think based on that it might be v1.0.

"Jump successful, Captain!

You breathe again with relief: your armada is one of the first to safely cross the Jumpgate to a hostile alien system! Everywhere around you sensors pick up extreme radiation levels, weird energy fluctuations, a madly gyrating asteroid field and solar winds like you've never seen before in any quadrant. The alarm sounds as alien ships dart out of the asteroid field. Your Stormcrows move in unison to repel the attackers while the rail guns of your Star Destroyers rain death upon them! You defeat the Raiders this time, but they will be back...

Centauri Saga is a Sci-fi/4X co-operative board game for 1 to 4 players, supporting both Co-Operational and PvP mode. Players begin with a mission that defines the setting and their goals and then guide their Armada through unexplored sectors (hexagons) of Alpha Centauri. However, players are not alone. They will encounter various Raiders and Bosses representing a hidden alien menace in the Centauri system. Your Saga begins now!"