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Voyager 1 spacecraft enters interstellar space, becoming the first man-made object to do so.
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Voyager 1
NASA space probe launched in 1977
Voyager 1 is a space probe launched by NASA on September 5, 1977, as part of the Voyager program to study the outer Solar System and the interstellar space beyond the Sun's heliosphere. It was launched 16 days after its twin, Voyager 2. It communicates through the NASA Deep…Source: Wikipedia (CC BY-SA)
Outer space
Void between celestial bodies
Outer space, or simply space, is the expanse that exists beyond Earth's atmosphere and between celestial bodies. It contains ultra-low levels of particle densities, constituting a near-perfect vacuum of predominantly hydrogen and helium plasma, permeated by electromagnetic…Source: Wikipedia (CC BY-SA)
August 25
Day of the year
August 25 is the 237th day of the year in the Gregorian calendar; 128 days remain until the end of the year.Source: Wikipedia (CC BY-SA)