Nundina › Discover calendars › On This Day in History calendar › 2008: The MESSENGER probe discovered Mercury's Rembrandt (pictured) – the second largest impact crater on the planet.2008: The MESSENGER probe discovered Mercury's Rembrandt (pictured) – the second largest impact crater on the planet.6 October 2026The MESSENGER probe discovered Mercury's Rembrandt (pictured) – the second largest impact crater on the planet.On This Day in History calendarMore from this calendar

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