The U.S. Space Command seemed to confirm a claim that a meteor from outside the solar system had entered Earth’s atmosphere, but other scientists and NASA are still not convinced.
The relationship between the nations’ space agencies is facing a series of difficult tests, including an antisatellite weapon and friction over Ukraine.
Getting the James Webb Space Telescope to the launchpad has been a difficult journey that has taken decades.
Starting in January, space tourists will not receive a participation trophy for flying to space. But everyone will be on the honor roll.
The State Department said the cloud of debris from the missile strike added more than 1,500 pieces of sizable space junk to Earth’s orbit.
The space agency acknowledged that it cannot return astronauts to the lunar surface by 2024, a timeline set under President Trump.