The Roscosmos State Corporation for Space Activities took to his Twitter to refer to outstanding Soviet scientist Sergei Korolev.
Their remarks came following Elon Musk's tweet that he spoke with Korolev’s family.
"I spoke with Korolev’s family today. He was one of the very best," Musk tweeted without elaborating.
“He was the best,” the Roscosmos replied.
He was the best https://t.co/bPhI3RvsL7— Государственная корпорация РОСКОСМОС (@Rogozin) July 11, 2020