Rocket problems may delay SpaceX's first crewed launches

When it comes to spaceflight, SpaceX's prices and flair are hard to beat. But the company hasn't exactly had smooth flying lately. There've been a few explosions, and the most recent blast in September has raised questions about whether the company's fueling operations could endanger future astronauts. Now, the Wall Street Journal reports that a problem in the Falcon 9's engine could jeopardize SpaceX's goal of becoming the first private company to deliver astronauts to the International Space S