Get ready to be amazed—Comet 3I/ATLAS is back, and it’s putting on a show like never before! This interstellar visitor, which has captivated skywatchers throughout 2025, has re-emerged in the morning sky as of mid-November, and its tail is growing longer by the day. But here’s where it gets even more fascinating: after being hidden behind the Sun since October—out of sight from Earth-based telescopes—it’s now revealing secrets that have astronomers buzzing.
For weeks, the comet was only observable via Mars orbiters, which managed to snap stunning images while it was otherwise invisible to us. Now, as it swings back into view, new photos from Gianluca Masi of the Virtual Telescope Project (https://www.virtualtelescope.eu/) are giving us a front-row seat to its transformation. Masi’s images, taken in early and mid-November, showcase the comet’s evolving condition—and its tail is stealing the spotlight.
But here’s where it gets controversial: As the comet moves into the morning sky, its tail—previously hidden behind its nucleus during its closest approach to the Sun—is becoming increasingly visible. Is this a sign of its strength, or could it hint at a fragile structure breaking apart? Masi’s observations on November 6th and 10th, captured under challenging conditions (including a nearly full Moon), reveal a growing ion tail. By November 11th, he noted the tail stretching at least 0.7 degrees in the northeast, with an anti-tail pointing east-southeast. This raises a thought-provoking question: How will this comet’s journey unfold as it continues to interact with the Sun’s heat?
And this is the part most people miss: The comet’s tail is lengthening due to the Sun’s heat sublimating its ices into gas, a process that’s both beautiful and scientifically intriguing. Masi and his team are even hosting a live stream of 3I/ATLAS on November 17th, 2025—a rare chance to witness this cosmic spectacle in real time. You can tune in via the embed below.
If you’re inspired to spot this interstellar wonder yourself, our blog (https://www.skyatnightmagazine.com/advice/how-see-comet-3i-atlas) has all the tips you need. And if you manage to capture your own images, we’d love to see them! Share your photos with us at contactus@skyatnightmagazine.com. But here’s the real question: As 3I/ATLAS continues its journey, what secrets will it reveal about our universe—and how will it challenge what we think we know about comets? Let us know your thoughts in the comments!
