A massive star-forming gas cloud has been discovered strangely close to Earth. Plus, ancient tools discovered in Kenya are more than 3 million years old. On This Day in History, we examine the Penny Black stamp, the world’s first adhesive postage stamp, and its impact on communication.

Massive star-forming cloud found strangely close to Earth

Ancient stone tools found in Kenya made by early humans

Researchers find 3-million-year-old tools in Kenya, showing development of human ancestors

Penny Black stamp guide

Stanley Gibbons: Penny Black

Royal Mint Museum: Penny Black

Postal Museum: The Penny Black Stamp

First Known Piece of Mail Sent Using a Stamp Goes to Auction

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