https://www.reuters.com/article/us-blue-origin-nasa-spacex/nasa-halts-spacex-work-on-lunar-lander-after-blue-origin-suit-idUSKBN2FK26Z >WASHINGTON (Reuters) -NASA agreed on Thursday to temporarily halt work on a $2.9 billion lunar lander contract awarded to Elon Musk's SpaceX after rival billionaire businessman Jeff Bezos's Blue Origin sued the U.S government, an agency spokeswoman said.