Stargazers in Bengaluru and other parts of South India have a rare celestial treat this week as comet C/2025 R3 (Pan-STARRS) becomes visible for a short period before sunrise.
The comet, discovered by the Pan-STARRS sky survey, can be seen low on the eastern horizon during early morning hours until April 20, weather permitting.
Astronomy enthusiast Deepak Choudhary said the best chance to observe the comet is under clear skies just before dawn.
Best viewing time for Bengaluru residents
According to skywatchers, the ideal viewing window is between 5 am and 5:45 am. Observers are advised to look towards the eastern horizon from open areas with minimal light pollution.
While the comet may be faint to the naked eye in city conditions, a small telescope or imaging device can significantly improve visibility.
Experts say locations outside dense city lights may offer better chances of spotting the comet’s tail and glow.
Closest approach to Sun on April 19 and 20
The comet is expected to reach perihelion — its closest point to the Sun — on April 19 and 20. This stage often increases a comet’s brightness, making it easier to observe.
Under darker skies, its brightness may reach magnitude three to five, which is considered favourable for amateur observers.
Rare visitor from deep space
Scientists believe the comet originated from the distant Oort Cloud, a region believed to contain ancient icy bodies at the edge of the solar system.
Such visitors are uncommon and may not return for thousands of years, making this a memorable event for sky enthusiasts.