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The rocket that launched Danuri into space and returned safely to Earth also drew attention.

This is because it was made to be used multiple times without becoming space junk, and Korea is also planning to develop such a reusable projectile.



This is reporter Jae Hee-won.



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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.



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



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.]



To use the rocket again, it needs to be loaded with fuel for the return trip, so it has to be made lightweight and has a lot of skills to have, such as guidance techniques to land accurately.



[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 rockets) There is a technology that needs to be secured more than that of the Nuri.] The



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

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