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What happened on January 3? Key moments that changed religion, politics, and space science

January 3 has seen pivotal moments in world history, from Martin Luther’s excommunication and Alaska’s statehood to Cold War diplomacy and NASA’s Mars rover landing.

By Surjosnata Chatterjee

Jan 03, 2026 12:31 IST

January 3 is connected to events that have left a lasting mark not only on religion but also in politics, diplomacy, and science. Across different periods and regions, this date has been shaped by decisions and developments that went on to influence societies far beyond their time.

From religious conflict in Europe and political choices in the United States to Cold War confrontations and space exploration, January 3 reflects moments that helped in defining the modern history.

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Excommunication of Martin Luther (1521)

Martin Luther was officially excommunicated by Pope Leo X in the papal bull Decet Romanum Pontificem on January 3, 1521. This was the effect of Martin Luther’s refusal to retract his statements criticising the practices of the Church, especially the sale of indulgences. The event became one of the most crucial turning points in the history of the Protestant Reformation.

Delaware rejects secession (1861)

As the United States moved closer to civil war, Delaware voted on January 3, 1861, against leaving the Union. Although Delaware had permitted slavery, it chose to remain within the United States, characteristic of the divided allegiance that border states at that time experienced.

Alaska becomes the 49th United States (1959)

On this day in the year 1959, Alaska was admitted to the United States of America as the country’s 49th state. Alaska was bought from Russia in the year 1867; it later proved significant in the Cold War Era. It gained importance due to natural resources.

United States sever relations with Cuba (1961)

On January 3, 1961, the United States severed diplomatic relations with Cuba under the administration of President Dwight D. Eisenhower. This move was in response to the increased closeness of Cuba with the Soviet Union, led by the charismatic revolutionary, Fidel Castro.

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Mars rover Spirit touches down on Mars (2004)

The NASA Spirit rover successfully landed on the planet's surface on the third of January in the year 2004. The rover was expected to carry out its operations on the planet for 90 days only. The Spirit rover worked beyond six years on the planet's surface, thus playing a crucial role in determining the existence of water on the planet.

Together, these events illustrate how January 3 has been linked to occurrences that have shaped belief systems, political affiliations, and scientific knowledge leaving effects that extended beyond the day itself.

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