History of Black Holes in the Sky

Black Holes in the Sky is a Voidwalker triumph: as a Voidwalker, defeat 3 targets with a single Nova Bomb.

How to complete

1. Equip the Voidwalker subclass and charge your Super.
2. Choose a Nova Bomb variant. Nova Bomb has two: Cataclysm, which travels slowly, seeks enemies and shatters into smaller seeker projectiles (shooting it mid-air splits it early), and Vortex, which fires a singularity that falls in an arc and keeps damaging enemies trapped inside.
3. Fire it into a tight group of enemies and land at least 3 kills from that one cast. Either variant fits; Vortex's lingering damage suits clustered adds, while Cataclysm's seekers spread damage to nearby targets.

Details

• Added in Season 12 (a search summary of light.gg, which could not be opened directly). Older entries may differ from the current version of the game.
• A search summary suggested running the Attunement of Chaos aspect; this is unconfirmed by any page I opened, and the triumph text only requires the 3 kills.
• Which seal or category this triumph sits in could not be confirmed from the pages I opened, and no reward is listed in its game text.