Dmitry Rogozin, the head of Roscosmos, called preventing collisions that could "ruin the civilization" the world's top priority.
The launch will be streamed in the early hours of Friday morning ET, and the crew should arrive at the ISS just hours later.
The Russian space agency revealed its new reusable rocket project this week, which was broadly similar to SpaceX's Falcon 9 and forecast to start launches in 2026.
Poll also showed 36 percent believe aliens occasionally visit Earth.
"Now it's not only the Russians flying to the ISS, but also the Americans," the Roscosmos spokesperson said.
"The satellite constellation deployed by the company will also be used for military purposes. It is of dual use," Roscosmos director-general Dmitry Rogozin claimed on Twitter this week.
Before launching astronauts to the International Space Station, great care is already taken to prevent the crew from bringing potentially dangerous viruses and pathogens onboard with them.
Roscosmos had previously suggested a man-made hole in the Soyuz spacecraft caused an air leak on board the International Space Station in August 2018.
Skybot F-850, also known as Fedor, left Earth on the Soyuz-2.1a rocket late Wednesday night.
Skybot F-850, also known as Fedor, will take off from Baikonur on the Soyuz spacecraft on August 22.
The observatory is expected to map around 100,000 galaxy clusters—the largest known gravitationally bound structures in the universe—and three million supermassive black holes.
Roscosmos says the U.S. wants to "destroy" Russian-American relations in space.
Roscosmos will try to regain control of the satellite Monday.
"We have set this objective to fly and verify whether they've been there or not," said the Director General of Roscosmos.
The Russian space agency Roscosmos has announced ambitious plans to establish a long-term base on the moon.
Dmitry Rogozin, the head of Roscosmos Federal Space Agency, said the SpaceX founder had deliberately undercut rocket launch prices "to squeeze Russia out of this market."
Roscosmos has become the subject of ridicule after budget cuts and high-profile setbacks.
Astronauts on the International Space Station do not even have sinks because of the way water behaves in microgravity.
Musk thinks he can avoid the Cold War-era disasters.
The satellite's rocket may have faltered, sources speculated.
Fedor can already fire guns, lift weights and drive in a straight line.
Launched from Kazakhstan with a designer born in Ukraine, the success of Sputnik is one the most celebrated Soviet achievements in Russia.
This is a key milestone in NASA's longer-term plan to send humans to Mars.