This image of Comet C/2025 A6 (Lemmon) was captured in the early morning of October 14 by CIERA Graduate Student Imran Sultan. This was shortly before the comet made its closest approach to our planet on October 21. The comet’s green coma, and long dust and ion tails, are prominent. Imran took the image remotely using a telephoto camera lens system installed at a remote observatory under dark skies in Texas.
Credit: Imran Sultan/Northwestern/CIERA