Mercury is positioned at its greatest western elongation from the sun during the current week, presenting one of the year’s most favorable viewing opportunities for the solar system’s innermost planet. Typically constrained by its tight orbital path, Mercury remains difficult to observe as it stays close to the sun and becomes obscured by the brightness of sunrise and sunset. During this period, the planet continues to brighten progressively, creating improved contrast against the increasingly illuminated morning sky. Observers seeking to view Mercury will need to rise early and secure a clear, unobstructed vantage point facing toward the east-north-east direction. From London, optimal viewing conditions are expected in the several mornings following the planet’s greatest western elongation, with Mercury becoming visible approximately one handspan above the horizon between 04:30 and 05:00 BST.
Optical aid such as binoculars may enhance the viewing experience, though observers must exercise caution regarding eye safety. Sunrise in London on Tuesday occurs at 05:28 BST, necessitating that binocular use be discontinued well before this time to avoid potential harm to vision. For those unable to locate Mercury initially, Mars presents an additional celestial target during the same viewing window, appearing at a higher elevation and positioned farther to the east, making it considerably more straightforward to identify in the pre-dawn sky.
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