What really happens when the Sun’s charged particles slam into Earth’s magnetic shield? 

Smile is about to reveal it for the first time.

This groundbreaking mission will observe Earth’s magnetosphere in X-rays while capturing the northern lights in ultraviolet, offering an entirely new way to see how our planet defends itself from solar storms.

A joint mission between the European Space Agency and the Chinese Academy of Sciences, Smile will launch aboard a Vega-C rocket on 9 April.

Learn more about Smile.

While the Artemis 2 mission is primarily a test flight, the four astronauts on board will conduct some science during the nearly 10-day mission.

While NASA outlined plans to increase the cadence of robotic lunar lander missions at a recent event, it said little about accelerating work on crewed lunar landers.

On 28 March, the European Space Agency (ESA) took a major step forward in strengthening Europe's ambition for more resilient satellite navigation, as the first two satellites of the Celeste in-orbit demonstration mission lifted off from New Zealand aboard Rocket Lab’s Electron. Their mission is to begin testing a complementary low Earth orbit layer for Galileo.

At 10:14 CET on 28 March, the first two satellites of ESA’s Celeste LEO-PNT in-orbit demonstration mission lifted off aboard a Rocket Lab Electron rocket from Māhia, New Zealand.

Celeste is Europe’s first initiative to bring satellite navigation into low Earth orbit (LEO). By testing next-generation technologies and new frequency bands, it will help shape the future of positioning, navigation and timing services.

Flying closer to Earth, Celeste will demonstrate how a complementary LEO layer can strengthen Europe’s Galileo system in medium Earth orbit — improving resilience, enhancing performance and enabling new services.

The four Artemis 2 astronauts arrived in Florida March 27 for final preparations ahead of a launch still scheduled as soon as April 1.