The effects of hundreds of pieces of debris are now the concern after an American and Russian satellite were destroyed in a collision nearly 500 miles above the Earth on Tuesday.

NASA’s Orbital Debris Program office said the satellites slammed into one another over Siberia in an incident that was observed by the Space Surveillance Network of the U.S. Department of Defense.

The U.S. satellite belongs to Maryland-based Iridium Satellite LLC, which says it is now dealing with the possible disruption of service for its satellite phone customers.

Iridium downplayed the collision’s effect on its network of 60+ satellites and said the lost satellite would be replaced by another one already in orbit within the next month.

Although the collision occurred more than 200 miles above the International Space Station’s orbit path, NASA is still keeping a close eye on the debris, which the space agency says could also threaten other satellites in the higher altitude neighborhood where the collision took place.