space force

Vice President Pence described the White House's plans for a Space Force, a sixth branch of the U.S. military that would be responsible for operations in outer space, in a speech on Thursday.

The White House says that the Space Force will be created by 2020. The change, which would require approval from Congress, would be a dramatic change in the organization of the Defense Department.

"We must have American dominance in space, and so we will," Pence said in his speech at the Pentagon.

Updated at 6:15 p.m. ET

President Trump Monday announced his intention to create a "space force" that would oversee the military's activities off-world.

"When it comes to defending America, it is not enough to merely have an American presence in space," Trump said at a meeting of the National Space Council, which oversees the nation's space policy. "We must have American dominance in space. So important."