How to attack asteroid bases?

The converse would be interesting as well: a tug of war mode, where whoever is able to push a large asteroid into orbit around their planet wins. One would have to build one's own engines while attempting to disrupt construction of or destroy the opponent's engines.

Landers carrying troops
Landers carrying engineers to build an orbital factory
Teleporting Troops
Interplanetary Artillery/Missiles/Nukes
Shoot another asteroid into it
Use the metal planets orgasm cannon
Unit cannon throwing armies onto the asteroid

I'm sure there will be lots of ways to overwhelm his last refuge.

I was thinking about a building in which you create a huge bomb and make a very big crater. Depending on the bomb you would create, the crater would be more or less big.
This way, you could blow up a big chunk if not the entire asteroid if you have the time to build the building and the bomb.
It would be similar to your wet dream


About the part on the nukes and anti nukes, i doubt the turtling player would have enough ressources to all your nuke strikes (if you can shoot asteroids from a planet-based nuke launcher, and i think it should be possible) when you have a much larger economy.

... Why are you all ignoring the most obvious solution? Put engines on all your planets, moons and asteroids (maybe a star too?) and ram them into your enemies tiny asteroid!

I guess they may have changed their mind about it but in this old thread on reddit Neutrino said it would be possible to move planets. If it does work that way I see no reason not to ram this kind of opponent fool with your own giant nuke coated death planet, how are they going to stop you? Sure your death planet might be slower than their asteroid, but you can just chase them into it with more planets and asteroids!