On July 18, 1962, a significant event in the history of astronomy took place: the launch of the Mariner 1 spacecraft by NASA. This mission was intended to be the first interplanetary flyby of Venus, marking a major milestone in our exploration of the solar system.

However, the mission took an unexpected turn mere minutes after launch. The rocket carrying Mariner 1 veered off course due to a software error in the guidance system. The error, later traced to a missing hyphen in the code, caused the rocket to fiercely pitch over, threatening to crash back to Earth.

Sensing the imminent danger, the Range Safety Officer took decisive action and pressed the self-destruct button, causing the rocket to explode just 293 seconds after liftoff. Debris rained down into the Atlantic Ocean, and the spacecraft was lost.

The Mariner 1 incident became known as "the most expensive hyphen in history," as the missing punctuation mark led to the loss of a $18.5 million spacecraft (roughly $165 million in today's dollars). It also served as a stark reminder of the importance of thorough testing and quality control in the space industry.

Despite this setback, NASA persevered. Less than a month later, on August 27, 1962, Mariner 2 was successfully launched, becoming the first spacecraft to flyby another planet when it passed Venus on December 14, 1962. This flyby provided valuable data about Venus and paved the way for future interplanetary missions.

The Mariner 1 incident, while a costly failure, taught valuable lessons and ultimately contributed to the success of the American space program. It's a testament to the challenges and triumphs of space exploration, and a reminder that even the smallest details, like a missing hyphen, can have far-reaching consequences in the grand endeavor of understanding our universe.