Comet C/2025 R3 (PanSTARRS) will be visible to the naked eye in April 2026, with peak brightness around magnitude 2.8 (potentially reaching magnitude -1 under ideal conditions), appearing as a soft glowing cloud with a tail rather than a star; the optimal viewing window is April 19-26, 2026, when the comet is closest to both the Sun and Earth, and it may be on a hyperbolic trajectory that could send it out of the Solar System permanently.
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Deep Dive
Comet C2025 A3: When to See it & Brightness!Added:
Now, let's talk about timing, because this is critical.
April 19th, 2026, closest to the sun.
April 26, 2026, closest to the Earth.
This is your main observation window.
Current brightness prediction, around magnitude 2.8. That means you might see it with a naked eye under dark skies.
But, there is also more exciting scenario.
If conditions are perfect, this comet could reach even magnitude minus one.
But, remember, it will not look like a star.
>> [music] >> It will look soft, like a glowing cloud with a tail.
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