The South Sandwich Islands were born from a tectonic collision, forged by volcanism and relentlessly reshaped by ice, wind and waves.
Fast solar wind and a possible glancing blow from a coronal mass ejection could spark auroras over Christmas.
Understanding what happens to Antarctica’s ice matters, because as it melts, sea levels rise, affecting lives and economies around the world.
Highlights from a cometary trio that captured our imaginations.
We just got a great up-close look at a SpaceX Starlink satellite that recently suffered an anomaly in orbit, thanks to Vantor's WorldView-3 spacecraft.
"I think every astronomer is going to find something of value here, as NASA's missions enable the world to answer fundamental questions about how the universe got its start, and how it changed to eventually create a home for us in it."
A picture of what West Antarctica looked like when its ice sheet melted in the past can offer insight into the continent’s future as the climate warms.
Atmospheric rivers are massive plumes of moisture carried across the sky that can dump heavy rains or snow over land. Here’s a look at the phenomenon: Where do atmospheric rivers come from? Atmospheric rivers generally form in tropical regions, where warm temperatures can cause water vapor to rise into the atmosphere, according to the National Oceanic and Atmospheric Administration.
The first scientific balloon flight happened on Dec. 16, 2025.
A bevy of comets, a "blood moon" total lunar eclipse and impressive northern lights were just three of the skywatching highlights in 2025. Here's how they unfolded.