How to evolve Cosmog into Solgaleo and Lunala in Pokemon GO?

Cosmog is again available in Pokemon GO as part of the Solstice Horizons event during the Season of Hidden Gems.

Cosmoem evolves to lunala in sheild in case anyone was wondering

A Semi-Speculative PvP Analysis on Lunala, Solgaleo, and Minior

Finally It's Time To Evolve Cosmog into Cosmoem

Thanks Niantic for forcing me to evolve this gem : r/pokemongo

Cosmoem evolution trick into Solgaleo in pokemon go.

Are Solgaleo and Lunala coming to Pokemon GO? Expected release

Pokemon Go: Best Moveset for Cosmog and Its Evolutions

How to evolve Cosmog in Pokémon Go

Pokémon GO: How To Evolve Cosmoem Into Solgaleo And Lunala

Are Solgaleo and Lunala coming to Pokemon GO? Expected release

How to Get & Evolve Cosmog, Lunala/Solgaleo