Colonists

The colony ship dropped the nanobot construction pods and waited.
The nanobots would send signals when the atmosphere was ready for the first round of organic seeding.
After laying down the bacteria and plant life, a few test species would be released.
If they survived and thrived, then a carefully-planned set of predator-prey relationships.
Finally, the handpicked colonists would be thawed out and sent down.
Yes, the land shaped up nicely. And life thrived.
But instead of reviving the colonists, the colony ship was boosted into the sun.
“You’re not wrecking this place again,” said the nanobots. “Earth is ours.”