Which astronomy tool's marketing campaign introduced the practice of releasing dramatic, color-enhanced images to the public that became known as 'pretty pictures' and revolutionized public interest in space?

In 2009, one space observatory's marketing campaign revolutionized public engagement with astronomy. After a troubled development plagued by budget overruns and technical delays, its launch required a massive public relations effort to justify its continued funding. The resulting marketing strategy didn't just save the mission - it transformed how the public interacts with astronomical discoveries, turning complex science into viral phenomena. Can you identify which famous observatory's marketing campaign changed astronomy's public image forever?

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Hubble Space Telescope
Very Large Array (VLA)
Chandra X-ray Observatory
European Southern Observatory's Very Large Telescope