The Badr-B is the second spacecraft and the first Earth observation satellite launched into Earth orbit on 10 December 2001 at 09:15 by the SUPARCO — Pakistan's national space agency. Badr-B is a microsatellite, with a mass of ~70 kg, and contained the computerized system to conduct the studies on the gravity gradient. Badr-B is a research satellite to explore the upper atmosphere and the near space, and carried a large array of instruments for geophysical research.

The Space & Upper Atmosphere Research Commission, commonly referred to as SUPARCO, is an agency of the Government of Pakistan responsible for the national space program.