Since Expressive Upgrade, meteors rain begin when you only discover a space tile without create a breach. Also, meteors totally destroy all the biomes under the surface. I lost 8 biomes in Expressive Upgrade, and I'm going to revive this with this upgrade.
See how deep meteors go in my asteroid. Next biome, it's my starting biome.
Steps to Reproduce
Discover the surface without make a breach.
This issue has not been confirmed by a developer yet.