TEHRAN, Iran (AP) — Iran's Revolutionary Guard launched its first satellite into space Wednesday, dramatically revealing what experts described as a secret military space program that could advance its ballistic missile development amid wider tensions between the Islamic Republic and the U.S.

Using a mobile launcher at a new launch site, the Guard said it put the "Noor," or "Light," satellite into a low orbit circling the Earth. While the U.S., Israel and other countries declined to immediately confirm the satellite reached orbit, their criticism suggested they believed the launch happened.

Ir...