At first glance, it seems like our understanding of physics forbids free will.
The Arctic endured a year of record heat and shrunken sea ice as the world’s northern latitudes continue a rapid shift to becoming rainier and less ice-bound due to the climate crisis, scientists have reported.
Here are the best lunar events to see in 2026, including eclipses, supermoons and conjunctions.
This year will conclude as the second hottest on record, surpassed only by 2024. It continues a recent trend of exceptional, unexplained warming. The last three years have been, by a wide margin, the hottest ever recorded.
The image offers a rare look at how Earth's surface and atmosphere interact after sunset.
The moon and sun share top billing in 2026. Kicking off the year’s cosmic wonders is the moon, drawing the first astronauts to visit in more than 50 years as well as a caravan of robotic lunar landers including Jeff Bezos’ new supersized Blue Moon. A supermoon looms on Jan. 3 and an astronomical blue moon is on the books for May.
We asked our staff to choose their favorite Space.com stories of 2025. Here's what we got.
Here are eight of the most spectacular astronomical discoveries of 2025.
This low-cost mission is still only getting started, and it's taking bigger risks than typical big-ticket NASA missions.
It's the 12 days of Spacemas, fa la la la la la la la la (sorry).