Most people think they know exactly where “down” is. It’s the direction your feet point. But that familiar sense of orientation starts to unravel when viewed from space. What happens to “down” when ...
A January 2026 Earth–Sun alignment allows measurements of the opposition surge from interstellar object 3I/ATLAS using ...
In the velvet darkness of our solar system, a mysterious traveller is currently making its grand exit, leaving a trail of ...