In a previous post, I used the history of the Hubble Space Telescope to explain how data cleansing saves lives, based on a true story I read in the book “Space Chronicles: Facing the Ultimate Frontier” by Neil deGrasse Tyson. In this post, Hubble and Tyson once again provide the inspiration for an insightful metaphor about data quality.

Hubble is one of dozens of space telescopes of assorted sizes and shapes orbiting the Earth. “Each one,” Tyson explained, “provides a view of the cosmos that is unobstructed, unblemished, and undiminished by Earth’s turbulent and murky atmosphere. They are designed to detect bands of light invisible to the human eye, some of which never penetrate Earth’s atmosphere. Hubble is the first and only space telescope to observe the universe using primarily visible light. Its stunningly crisp, colorful, and detailed images of the cosmos make Hubble a kind of supreme version of the human eye in space.”

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