50 years after discovering a Milky Way black hole, he saw it.

Bruce Balick emailed his research partner across the nation. He feared other radio astronomers, particularly Fred Lo.

Balick wrote to his associate Robert L. Brown in 1974, "We'd best publish soon to beat him."

Balick was young, ambitious, and ready to share what they saw in the sky on a beautiful, dry February day.

Possible side competition. Balick detected deep-space radiowaves. Infrared astronomers were pursuing the same cosmic aim, he said.

Balick and Brown won the race, getting credit for Sagittarius A*, the Milky Way's supermassive black hole.

Astrophysical Journal announced their findings in December 1974.

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