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The day the most famous formula was published – level 3

27-09-1905

In 1905, Albert Einstein was a young man working for the...



The day a signal came from space – level 2

15-08-1977

On August 15, 1977, American astronomer Jerry Ehman looked at the...



The day a signal came from space – level 3

15-08-1977

On August 15, 1977, American astronomer Jerry Ehman carried out an...



The day the construction of Hoover Dam began – level 2

07-07-1930

On July 7, 1930, the construction of the Hoover Dam began....



The day of the first solo balloon flight around the world – level 2

02-07-2002

On January 8, 1996, Steve Fossett took off from South Dakota...



The day of the first solo balloon flight around the world – level 3

02-07-2002

On January 8, 1996, Steve Fossett took off from South Dakota...



The day the longest bridge was opened – level 3

30-06-2011

The Danyang-Kunshan Grand Bridge, located in China, was officially opened to...



The day of the first woman in space – level 1

16-06-1963

It is 1963. The Soviets want to show the world who...



The day of the first woman in space – level 2

16-06-1963

In 1963, the Soviets wanted to show the world who was...



The day of the first woman in space – level 3

16-06-1963

In 1963, the Soviets decided to show the world once again...