President Yoon then paid a visit to the men and women behind the launch last month of South Korea's first domestically developed space rocket, Nuri.
He congratulated them, and asked them to join him in opening the era of the "space economy."
He was speaking at the Korea Aerospace Research Institute.
Take a listen.
"It's no exaggeration to say our global competitiveness lies in the space industry. We will solidify our space technology and infrastructure to secure our competitiveness in the space industry."
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He also said, as he pledged in his presidential campaign, the creation of a national space agency to support the industry more systematically.
In the meantime, the government work to enable private companies to take the lead.
And with more advanced satellites, he said, we'll soon be able to use 6G in our daily lives.
President Yoon also showed his support for the scientists and engineers by bringing truckloads of coffee and cookies.