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The rocket that went up to space today (the 5th) with Danuri returned to Earth.

Instead of using it once and throwing it away like before, you can now travel to space more than ten times with a single rocket.

Our goal is to make a projectile like this.



Reporter Jae Hee-won pointed this out.



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The US SpaceX rocket Falcon 9 soars into the sky with a roar and strong flames.



About two minutes after launch, the first stage rocket, which is the propellant, is separated from the second stage rocket carrying Danuri.



The first stage rocket slowly lowers its altitude and returns to Earth.



It then lands safely on the barge above the sea.


Enlarging an image

Until this Danuri launch, the Falcon 9 has completed its sixth flight, and the tan marks tell the history of its flight.



SpaceX believes these rockets can all be reused 15 times.



In the meantime, rockets have been thrown away after launching payloads like Danuri into space, but reusing them can significantly lower launch costs.



That's why countries around the world are working hard to develop reusable projectiles.



[Kim Dae-gwan / Director of the Lunar Exploration Project Team, Aerospace Research Institute: If you look at the projectile work at the Space X launch site, it is quite different (from other launch sites).

It seems to use a lot of procedures that are optimized in terms of commercialization.] In



order to use the rocket again, it must be made lightweight because it needs to be loaded with fuel to be used when returning.



[Ahn Jae-myung/Professor of Aerospace Engineering at KAIST: It must be made strong enough that there is no problem no matter how many times you experience it.

(For the reuse of projectiles) There is a technology that needs to be secured more than that of the Nuri.] The



government plans to develop reuse technology through the next-generation projectile development project following the Nuri.



(Video coverage: joint coverage, video editing: Yoon Tae-ho, screen source: SpaceX YouTube)