Zords in the Omega Megazord:
Omega Zords 1, 2, 3, 4, and 5.

Zord Descriptions:
These zords have different uses "in space".

Where they are stored:
In the train bay, they go in the Rail Rescues when forming the Omega Megazord.

Formations:
The Omega Megazord, and land-crawler mode where it's the step before becoming the Omega Megazord (transformation). To form, at the Max Solarzord hanger bay, the Max Solarzord in shuttle mode launches into space with the Rail Rescues to the back and they go up into space, there, the Rail Rescues deploy and all the Omega zords fly out.

Attacks:
Mars Flare (GoGo5) where the Omega Megazord takes its staff and slashes the enemy with energy, and another is that it shoots a shuttle at the enemy.

Weapons:
The staff which is the one carried on Rail Rescue 5 when forming, and is the cannon in the land-crawler mode.

Other Formations:
Just Mentioned them

Other stuff:
In Ginga vs. GoGo5 or the McDonalds video, the Omega Megazord was "powered up" by the Lights of Orion. Like the Power Rangers Turbo megazords, the rangers wear the seat belts.

Differences in GoGoV:
Not destroyed, but an arm came off in the last episode. LR- The same thing happened in LR, but was fixed and then controlled by the Demons, used for picking up stones and making a circle out of them, then destroyed when Carter ran the Mobile Armored Veichle into the back of the megazord in attempt to stop the circle of stones from being completed.