aeon

In political terms both of those situations dragged on for aeons before the two ministers were shown the door.

Scientists wanted to collect pristine material from Ryugu that had not been altered by exposure to the environment of space for aeons.

Hayabusa-2 subsequently descended into this depression with the intention of collecting fresh rocks that had not been altered by aeons of exposure to the environment of space.

Every other mammal that went to sea—seals, sea cows, dolphins—had to evolve for aeons to develop specialised organs and a hydrodynamic body.

Astronomers think the blast originated aeons ago from a supermassive black hole in the cluster.