Running two days late because of concerns about possibly threatening space debris, a veteran astronaut and a rookie crewmate floated outside the International Space Station Thursday and replaced a faulty antenna in a problem-free 6.5-hour spacewalk.

The astronauts originally planned to carry out the spacewalk Tuesday, but NASA ordered a delay to fully evaluate possibly threatening space debris to determine what sort of risk it might pose to the astronauts.

The incident occurred just two weeks after a Russian anti-satellite weapon test that destroyed a retired satellite and generated a cloud of debris.

Sources said the debris in question this week may not have been generated in the ASAT test, but that could not be immediately confirmed.

The Russian ASAT test generated about 1,700 pieces of trackable debris and an unknown number of smaller fragments.

The debris has now spread out and NASA officials said Monday the risk to Marshburn and Barron was only about 7 percent higher than the normal 1-in-2,700 odds of a spacesuit penetration.

Vice President Kamala Harris, chair of the panel, condemned the Russian ASAT test and said the United States would lead an effort to establish international “rules and norms” to enhance safety for astronauts and spacecraft alike.

That “irresponsible act,” she said, “endangered the satellites of other nations, as well as astronauts in the International Space Station.

Russia claims the ASAT test was designed to minimize threatening debris and tweeted Wednesday, shifting the focus, that a fragment from an old American Pegasus rocket was predicted to make a close pass by the station Friday.

Kathleen Hicks, deputy Secretary of Defense, told Harris the Russian ASAT test “really demonstrates the potential deadly effects” if rules and norms are not followed

“We’ve seen significant amounts of hazardous debris created that can threaten and could still threaten the lives of those space travelers who are in low Earth orbit,” she said of the ASAT test

The International Space Station and the SpaceX Crew Dragon capsules that ferry astronauts to and from the outpost are equipped with shielding designed to prevent penetrations by smaller, untracked debris fragments and micrometeoroids