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In the future Earth, scientists have successfully created Stargate.

And because of the greedy nature of human being, they wish to colonize as many planets as possible!

And they sure can NOT wait till the Warp Drive is invented!

So transporting Stargate to another planet become a huge problem!

Especially those planets of another star system!

So how could my scientific think tanks overcome this problem!?

Additional Information:

1. There is NO magic or superpower.


2. Based on as many scientific facts, realistic or fictional, as possible. But only technologies considered "lower" than the Stargate may be used. Of course this is all subjective, such as one could never know which of Stargete or Warp Drive is more advanced. But please do as best as you could to fit the criteria.


3. The scientists are controlled by greedy, and ignorant, governors, therefore simple answer such as "Our current technology is simply impossible to accomplish such a thing!" is ABSOLUTELY unacceptable!

Rockets

Rockets are the fastest means of acceleration we have but it's just not efficient but for a stargate, this isn't a problem as you can open the gate to refuel.

You effectively build the stargate into a ship and use the gate to refuel and resupply. Crew can come and go as wanted.

As tech improves, you bring it through the gate and upgrade the ship on the way.

With current tech, we're looking at around 100 years but with a gate, we don't need to carry supplies so the weight is less which means we can go much faster.

It seems your only option is to utilise slower-than-light travel to get your Stargate to the each world you wish to connect to. Once it's there you can dial it up and use the wormhole to start sending through people and supplies to establish a colony. Once that's established you can start using that as a jumping-off point for the next Stargate seeding mission.

Notes:

Depending on if the Stargate's have a minimum connection distance like the did in the show, it may be possible to use them to drastically boost the efficiency of your space program. Simply have one in orbit around Earth and push the ships through from the ground level. Bam! No need to waste all that fuel escaping Earths gravity.

Similarly having one on the Moon, or at the edge of the Solar system allows you to shortcut the more expensive parts of space travel.

You may also be able to use the Stargate as a thruster depending on the exact physics. Have the engines on Earth where they can be easily refuelled and repaired, and direct their thrust through the wormhole here -

• If matter travelling through the gate exerts an equal and opposite force on it, you can put the 'gate at the rear of the ship and direct the thrust away to push yourself forward.


• If there is no corresponding force on the exiting 'stargate, you'll have to direct the thrust at the ship itself, and use an armoured catching plate or sail to absorb the force and push the ship forward - as well as the Stargate, as there is no force acting on it. Basically laser propulsion
  

IIRC correctly on the original show it was possible to connect to a ship in space as long as it's position was calibrated correctly. In the show I don't think the Stargate thruster idea was ever attempted.

If we're talking about the initial endeavor to get a single "nearby" planet colonized and set up with a stargate, then I agree with other answers. If you rule out any tech as or more advanced than the stargate and warp drives, you are probably going to have to do it the old fashioned way with slower-than-light travel.

Regarding how to settle as many worlds as quickly as possible, you might consider adding some naturally occurring wormholes. Many works of science fiction rely on "wormholes" as shortcuts to other areas of the universe (sure, it stretches science a bit, but it's a well accepted sci fi trope). If you are lucky enough to have one or more stable wormholes in your neighborhood, you could use these naturally occurring "stargates" to get your ships and stargates to other parts of the universe, and then head for any planets close (galactically speaking) to the wormholes using traditional slower-than-light travel. This would give you access to more worlds faster and allow you to begin creating expanding hubs of colonized worlds with stargates more quickly than you otherwise might.

For instance, in David Weber's Honorverse books, the Star Kingdom of Manticore happened to be located at a terminus of multiple wormholes. This allowed them fast travel to several other areas of space, and made a tiny single star-system kingdom super rich as a result, because they became a hub of trade. In your case, the stargates would render the wormholes obsolete eventually, but the wormholes could still be used to get them places while you're getting your stargate system set up.