Tourists normally have to pay big money and brave cold climates for a chance to see an aurora, but last weekend many people around the world simply had to look up to see these colorful displays dance across the sky.

Usually banished to the poles of Earth, the auroras strayed as far as Mexico, southern Europe and South Africa on the evening of May 10, delighting skygazers and filling social media with images of exuberant pinks, greens and purples.

But for those charged with protecting Earth from powerful solar storms such as the one that caused the auroras, a threat lurks beneath the stunning colors.

"We need to understand that behind this beauty, there is danger," Quentin Verspieren, the European Space Agency's space safety program coordinator, told AFP.

Europe's newest rocket soon launches, taking with it many space missions each with a unique objective, destination and team at home, cheering them on. Whether into Earth orbit to look back and study Earth, peer out to deep space or test important new technologies, Ariane 6's first flight will showcase the versatility and flexibility of this impressive, heavy-lift launcher.

The Replicator mission, from Warsaw, Poland, and Berlin, Germany, based startup Orbital Matter, will launch on Ariane 6 to demonstrate a new 3D printing technology in orbit, potentially opening the door to new space structures that wouldn't have been possible otherwise, made using fewer resources.

The name "Replicator" is a homage to the many forms of advanced manufacturing methods in science fiction, capable of making complex products, ready to use: Star Trek's kitchen microwave-like Replicators could synthesize meals on demand; the Von Neumann Probe is a conceptualized spacecraft capable of exponentially self-replicating; and in the Stargate series, Replicators are a highly advanced machine race capable of reproducing themselves indefinitely.