MOSCOW (AP) — A Russian spacecraft bound for a moon of Mars and stuck in Earth’s orbit will come crashing back next month, but its toxic fuel and radioactive material on board will pose no danger of contamination, the Russian space agency said today.

Between 20 and 30 fragments of the probe with a total weight of up to 440 pounds will survive the fiery plunge and shower the Earth’s surface, Roscosmos warned in a statement.

The agency said the unmanned Phobos- Ground spacecraft will plummet to Earth between Jan. 6 and Jan. 19, and the rough area of where the fragments could fall could only be calculated a few days ahead of its plunge.

As of now, it said only that the probe’s fragments could rain down anywhere along a broad swath between 51.4 degrees north to 51.4 degrees south, which would include most of land surface.

While the agency had lost contact with the probe following its launch on Nov. 9, this was the first time it acknowledged that the $170 million craft has been lost and will come crashing down.

Since its November launch, the engineers in Russia and at the European Space Agency have attempted unsuccessfully to propel it away from Earth’s orbit and toward its target.

Phobos-Ground weighs 14.6 tons, which includes 12 tons of highly toxic fuel.