Rocket debris from China's space station launch is hurtling back to Earth — and scientists aren't sure where it will land

A huge piece of space junk is about to make an uncontrolled re-entry back into Earth's atmosphere, threatening to drop debris on a number of cities around the world in the coming days. It's leftover from China's first module for its new Tianhe space station — and no one knows where it will land. The 46,000-pound Chinese rocket Long March-5B recently launched the first module for the country's new space station into orbit. After the core separated from the rest of the rocket, it should have followed a predetermined flight path into the ocean. More

(Source: CBS News - May 7)