The sky is falling. Again.

China’s first space station, Tiangong-1, abandoned and out of control, is expected to drop out of orbit around this weekend, with pieces of it likely to survive the fiery re-entry and crash somewhere on Earth.

Don’t worry.

According to space debris experts, the chances that you personally will be hit by of a chunk of space metal are essentially zero — less than one in a trillion.

“It’s really very, very, very tiny odds,” said Andrew Abraham, an analyst leading efforts to track and predict the demise of the space station at the Aerospace Corporation, a nonprofit that performs research and analysis for the United States Air Force. “I certainly would worry about things like crossing the street far more than debris from Tiangong.”

[Read The Times’s coverage of China’s Chang’e-4 mission to the moon.]

Tim Flohrer, a space debris analyst at the European Space Agency, said the risk is “significantly smaller than being hit by lightning.”