The 400-foot tall SpaceX Starship rocket launched Friday on a closely-watched test flight, taking off from Texas and splashing down about an hour later — 10,000 miles away. It was the company’s first test flight since SpaceX went public on Wall Street — marking the largest IPO in history. But the company's stock is now down nearly 29 percent. Mark Strassmann has a closer look at what's at stake. #spacex #space #technology