Europe's Galileo Navigation System Adds Two Satellites

Europe's Galileo Navigation System Adds Two Satellites

The European Union-funded Galileo satellite navigation system added its 13th and 14th satellites after a successful launch atop a Soyuz rocket from French Guiana on May 24, 2016. Nearly four hours after liftoff, the twin Galileos were deployed into orbit approximately 23,522 kilometers above Earth.

Methane and Carbon Dioxide Levels Still Rising

Methane and Carbon Dioxide Levels Still Rising

Satellite readings show that atmospheric methane and carbon dioxide are continuing to increase despite global efforts to reduce emissions. Methane concentrations were somewhat constant until 2007, but since then have increased about 0.3 percent per year, whereas global carbon dioxide levels continue to rise at about 0.5 percent per year.

NAAMES Mission Studies Oceans and Atmosphere

NAAMES Mission Studies Oceans and Atmosphere

The North Atlantic Aerosols and Marine Ecosystems Study (NAAMES), a five-year NASA-funded study, is the first NASA Earth Venture-Suborbital mission focused on studying the coupled ocean ecosystem and atmosphere using ships and aircraft simultaneously.