Space science
The badge of the first person to the Moon is unbelievably high
It is hard to believe that Neil Armstrong's medal in the Apollo 11 campaign in 1969 was sold at such a high price.
Badge
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Discover science
Decipher the mysteries that exist in every person's life that few people pay attention to
Life always contains paradox. There are objects, details of people to use and daily contact but when asked the reason behind them, not everyone knows.
Computer science
Annotate for folders with images
Some directories with important documents inside, you want to 'mark them' with their own symbols to quickly distinguish the content that is inside that directory, then u…