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Watch Titan's Rare Transit Across Saturn This September

9/3/2025

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Summary

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Titan, Saturn's largest moon, will transit across Saturn on Sept. 4, starting at 1:25 a.m. ET for approximately 3.5 hours.
An 8-inch telescope is recommended for the best viewing, though a 4-inch telescope may suffice.
Additional transits are scheduled for Sept. 20 and Oct. 6, with another in 15 years.

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Story summary

Titan, Saturn's largest moon, will transit across Saturn on Sept. 4, starting at 1:25 a.m. ET for approximately 3.5 hours.
An 8-inch telescope is recommended for the best viewing, though a 4-inch telescope may suffice.
Additional transits are scheduled for Sept. 20 and Oct. 6, with another in 15 years.