Europe's next-generation Ariane 6 rocket rose today for the first time from its South American spaceport, ending a yearlong launch…
For a small, lumpy chunk of rock that barely reflects any light, Mars' Moon Phobos draws a lot of attention.…
The solar cycle has been reasonably well understood since 1843 when Samuel Schwabe spent 17 years observing the variation of…
Launched on April 14, 2023, the European Space Agency’s (ESA) Jupiter Icy Moons Explorer (Juice; formerly known as JUICE) spacecraft…
As the European Space Agency's Juice spacecraft headed out on an eight-year trip to Jupiter's icy moons, it turned back…
We recently examined how and why Jupiter’s moon, Europa, could answer the longstanding question: Are we alone? While this small…
Comets, with their long, beautiful, bright tails of ice, are some of the most spectacular sightings in the night sky.…
How much would you be willing to spend to remove a piece of space debris? Does $102 million sound like…
The European Space Agency launched the Gaia mission in 2013. The mission's overall goal was to discover the history of…
The craters on the Moon's poles are in permanent shadow. But they're also intriguing locations, due to deposits of water…