One of the medicine prize winners, meanwhile, was on vacation in Yellowstone National Park without cellular service. It would be hours before he found out.

The Nobel Prizes are considered among the world’s most prestigious honors for achievements in medicine, physics, chemistry, literature, economics and peace. The winners join the pantheon of Nobel laureates, from Albert Einstein to Mother Teresa.

Sometimes, the award is anticipated. Potential winners plan tentative news conferences or, in the western U.S., wait up all night for the news.

While some prizes might feature household names — such as 2009 peace prize winner then-U.S. President Barack Obama or 2016 literature laureate and singer-songwriter Bob Dylan — the natural science categories typically go to people whose names the general public doesn’t know, for decades-old research.

Five of this year’s nine science winners were in the U.S. when the news broke. Some were fast asleep.