Earth Science Week 2025, an annual worldwide celebration of the geosciences led by the American Geosciences Institute (AGI), is underway from October 12–18, 2025, with the theme “Energy Resources for ...

Gather ’round for this galactic double feature. After a year devoid of comets visible to the naked eye, two of the celestial entities — C/2025 A4 (Lemmon) and C/2025 R2 (SWAN) — will be gracing our ...