The provisionally named S/2025 U1 is so small it had gone unnoticed by probes and telescopes for the past 40 years.

A team of astrophysicists at the American research center Southwest Research Institute (SwRI), led by Moroccan scientist Maryame El Moutamid, recently discovered a previously unknown small celestial ...

The looming cancellation of RPS has placed the highest-priority planetary science mission of the coming decade at risk. In ...