Rivals SpaceX, Arianespace launch rockets in 15 minutes gap

US-based SpaceX and French rival Arianespace on Wednesday launched their respective rockets within 15 minutes of each other. While Arianespace's Ariane 5 rocket carried four satellites into the orbit, SpaceX launched 10 satellites aboard its Falcon 9. Following the launch, SpaceX successfully landed Falcon 9's first stage on the "Just Read the Instructions" drone-ship in the Pacific Ocean.