There are more than 500,000 pieces of debris in orbit above us. And sometimes that junk falls back to Earth.
For over a year, scientists have been trying to figure out when Chinese space lab Tiangong-1 is going to plummet back to its home planet. Now they think they know: They say it will likely re-enter our atmosphere around April 1.
Tiangong-1 was the first space lab China put into orbit. Scientists there hoped it would be a testament to man's future in space. But in 2016, the station stopped responding to commands. After that it was just a matter of time before it came crashing down.
But there's not much reason to worry. Tiangong-1 will almost completely burn up in our atmosphere, and what doesn't will most likely land in the ocean or on some desolate part of the planet.