( CNN ) -- Russia said it does not plan to use the International Space Station beyond 2020 , casting a shadow on U.S. plans to continue cooperation with the country and extend the life of the orbiting laboratory until at least 2024 . Russian Deputy Prime Minister Dmitry Rogozin told reporters Tuesday that Russia is looking to redirect its attention to other projects after 2020 . His comments come as tensions mount over U.S. sanctions on Russia for its role in the crisis in Ukraine . NASA released a statement saying that the U.S. space agency `` has not received any official notification from the Government of Russia on any changes in our space cooperation at this point . '' NASA added that cooperation in space has been a hallmark of U.S.-Russian relations , even during the Cold War , and it pointed to the past 13 years of continuous human presence on the orbiting outpost . U.S. State Department spokeswoman Jen Psaki echoed that the United States and Russia have a long history of cooperation in space and that the United States hopes it will continue . At present , the U.S. space program relies on the Russian program . Ever since NASA retired its aging shuttle fleet in 2011 , the only way for astronauts to reach the space station is aboard a Russian Soyuz craft . Private industry has filled a gap by ferrying cargo in low-Earth orbit , and NASA has awarded cargo resupply contracts to the California-based SpaceX and the Virginia-based Orbital Sciences Corporation . SpaceX did not immediately respond to a request for comment about Rogozin 's statements . Orbital spokesman Barron Beneski told CNN that the company did not have an immediate reaction to the Russian reports , and he noted that the company 's contract calls for the delivery of cargo to the space station through 2016 . The United States , Russia , Europe , Japan , and Canada are the principal entities involved in the operation of the International Space Station . The history of human spaceflight . NASA to end most activities with Russia . CNN 's Mike Ahlers , Greg Seaby and Samson Desta contributed to this report .
Russia to stop its space shuttle in orbit , deputy prime minister says . U.S. depends on Russian space to get to the station with end of shuttle program . Russia says it has not received notification , notes longstanding cooperation .