CHAMP satellite and terrestrial magnetic data help define the tectonic model for South America and resolve the lingering problem of the pre-break-up fit of the South Atlantic Ocean

In July 2000, a new potential fields satellite was launched and is currently measuring the earth's gravity and magnetic fields (the latter down to 0.1 nT). The satellite, called CHAMP (CHAllenging Mini-satellite Payload), will be providing high accuracy crustal magnetic field data of the earth for wavelengths of about 300–3000 km until about 2005.