People in the western United States could not believe their eyes Wednesday night when, high in the sky, a bright streak of light appeared. Many people took photographs or made videos of the mysterious object in the sky. Within minutes, some posted their videos on social media. The strange fireball streaks were seen in parts of Nevada, Utah and California. Some people thought it was a meteor shower. After all, the Delta Aquarids meteor shower can be seen in many areas in the night sky this week. But, as the U.S. Strategic Command confirmed, these bursts of light were not from small rocks traveling through outer space. They came from a Chinese rocket re-entering Earth’s atmosphere. A spokeswoman for the Strategic Command told the Associated Press that remains of the Chinese Chang-Zheng (C-Z) 7 rocket re-entered the atmosphere at around 9:36 p.m., California time. The CZ-7 was part of China’s new generation of rockets, experts say.