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The day a signal came from space – level 1

15-08-1977

It is August 15, 1977. An American astronomer looks at 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 US stopped fighting in Vietnam – level 1

27-01-1973

Vietnam has two parts of the country in 1964. These two...



The day the US stopped fighting in Vietnam – level 2

27-01-1973

Vietnam was divided into North Vietnam and South Vietnam since the...



The day the US stopped fighting in Vietnam – level 3

27-01-1973

Vietnam was divided into North Vietnam and South Vietnam since the...



The day Steve Jobs presented the first iPhone – level 1

09-01-2007

On January 9, 2007, Steve Jobs shows the first iPhone in...



The day Steve Jobs presented the first iPhone – level 2

09-01-2007

On January 9, 2007, Steve Jobs presented the first iPhone in...



The day Steve Jobs presented the first iPhone – level 3

09-01-2007

On January 9, 2007, Steve Jobs presented the first iPhone in...



The day the first gorilla was born in a zoo – level 2

22-12-1956

The first gorilla was born in a zoo in the United...