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Comet PanSTARRS
“A comet is a visitor from the deep past, blazing briefly in our sky.”
Comet alert! We have a naked-eye comet visiting us! There is a short window for viewing!
If you’re willing to greet the dawn in the next day or two, there’s a fleeting visitor in the morning sky worth the effort—and perhaps worth choosing your most impressive tartan kilt for the occasion.
This bright naked-eye comet, C/2025 R3 (Pan-STARRS), has been visible in the pre-sunrise sky beginning mid-April 2026. Discovered in September 2025, this long-period visitor from the distant Oort Cloud is making a rare pass through the inner solar system—one we won’t see again for something like 170,000 years. This comet has beautiful ribbons of plasma and a slight anti-tail giving it a narwhal look.
In the days around April 17, the comet reached peak visibility, hovering low in the eastern sky before sunrise in the constellation of Pegasus, near the Great Square and the star Markab. Under good dark-sky conditions it has been visible to the naked eye, roughly around magnitude +3 to +4.5, though binoculars will give a much better view of its diffuse and beautiful ribbons of plasma glowing tail and even a slight anti-tail pointing towards the sun, giving it an impression of a narwhal!
The comet reaches perihelion—its closest point to the Sun—on April 19, 2026. After that, it swings even closer to our line of sight with the Sun, making observation increasingly difficult from Earth. Around April 25–27, it passes near the Sun from our perspective; at that point, it’s largely lost in the solar glare and best seen only with specialized solar instruments (coronagraphs), not the naked eye.
It also makes its closest approach to Earth on April 27, at a distance of roughly 45 million miles! 💙 💚 🤍 ☄️ ☄️ ☄️ ✨ ✨ ✨ 🔭 🌃 🌌
Comet C/2025 R3 (PanSTARRS) was discovered on September 8, 2025, by the Pan-STARRS survey telescope in Hawaii. At the time, it was an extremely faint object, barely detectable, appearing as a small diffuse glow with no visible tail. Astronomers quickly determined that it originated in the distant Oort Cloud, a vast reservoir of icy bodies at the edge of the solar system, and that it was making what would likely be its only journey through the inner solar system.
Through late 2025 and into early 2026, the comet brightened slowly as it traveled inward toward the Sun. By January it was still faint, but as solar heat began to act on its surface, gases and dust were released, forming a visible coma and tail. By March 2026, it had brightened enough to be seen with binoculars, and observers began reporting a growing tail stretching across the sky. Its rapid development made it an increasingly attractive target for amateur astronomers.
In early April 2026, the comet reached naked-eye visibility under dark skies, appearing as a faint, hazy patch in the dawn sky. Its brightness continued to increase as it approached perihelion, the point closest to the Sun, which it reached on April 19 at a distance of about half the Earth–Sun distance. Around this time, it was expected to reach peak brightness, possibly becoming one of the more notable comets visible without optical aid in recent years.
After perihelion, the comet moved into a position between the Earth and the Sun, creating conditions that could briefly enhance its brightness through forward scattering of sunlight. It made its closest approach to Earth on April 26, passing at a distance of roughly 73 million kilometers. Shortly before this, it passed very close to the Sun in the sky, making observation difficult but of particular interest to solar observers.
Unlike periodic comets that return at regular intervals, C/2025 R3 follows a hyperbolic path, meaning it is not bound to the Sun and will not return. After its brief appearance in 2026, it will continue outward into interstellar space, making this passage a rare, once-in-a-lifetime event and a fleeting reminder of the distant origins of such visitors.
For more on this comet, click the comet or visit your favourite astronomy site!