CBS News:

BP says oil from its broken well has stopped gushing into the Gulf of Mexico for the first time since April.

The announcement Thursday came after company officials said all valves had been shut on a new cap over the busted well in an experiment to stop the spill.

Kent Wells, a BP PLC vice president, said at a news briefing that oil stopped flowing into the water at 2:25 p.m. CDT.

This isn't definitive or over, of course, and they're still testing to see if the cap will hold long enough to get the relief wells finished, but if, if, and if, it's a big milestone.

God speed, little cap.