The Astromancer outfit is a 5 piece outfit that could be unlocked by distributing 1,000 Astromancer credits to each four factions. Since 23 July 2018, they are available for free from Diango. The outfit could be charged with astromancer credits as well, for 100 credits for each charge, up to 50 extra charges.
Once a day for one charge, the outfit can spawn a Small meteorite that grants 25% more experience in a chosen skill than normal Small XP lamp, or 75% more if the skill chosen is one of player's five lowest skills. There's also a chance it will spawn a Large meteorite instead of small one.