Mercury's black disk helps sharpen Solar Orbiter's view

This year started with a nice imaging opportunity for Solar Orbiter, and a chance to further improve the quality of its data. On January 3, 2023, inner planet Mercury crossed the spacecraft's field of view, resulting in a ...

Chelyabinsk a decade on: The sun's invisible asteroids

No one saw the Chelyabinsk meteor of February 15, 2013 coming—the largest asteroid to strike Earth in over a century. Just after sunrise on a sunny winter's day, a 20-meter, 13,000-ton asteroid struck the atmosphere over ...

Juice's odyssey of exploration: Jupiter's icy moons

A grand odyssey of exploration is about to begin. Humankind's next bold mission to the outer solar system, ESA's Jupiter Icy Moons Explorer, Juice, is poised to explore giant planet Jupiter and its largest moons. These intriguing ...

Spotting faint dwarf galaxy Donatiello II

Right in the middle of this image, nestled among a smattering of distant stars and even more distant galaxies, lies the newly discovered dwarf galaxy known as Donatiello II. If you cannot quite distinguish the clump of faint ...

Turning astronauts into moon explorers

ESA's geology training course PANGAEA has come of age with the publication of a paper in Acta Astronautica that describes the quest for designing the best possible geology training for the next astronauts to walk on the surface ...

Curious comet's rare close approach

Comet C/2022 E3 (ZTF) today makes its closest approach to Earth before likely leaving our solar system forever. At billions of years old and not seen since Neanderthals roamed, the green comet continues to intrigue as it ...

Successful in-flight demonstration of the ADEO braking sail

The Drag Augmentation Deorbiting System (ADEO) breaking sail was successfully deployed from the ION satellite carrier in late December 2022. A sail area of 3.6 square meters was autonomously deployed from an impressively ...

Deep fractures and water-carved valleys on Mars

Mars displays fascinating geology everywhere you look—and nowhere is this more true than in the fractured, wrinkled ground seen in this image from ESA's Mars Express.

page 25 from 40