Prosecutor Pam Davis had asked for jail time and at least five years' probation, dismissing claims from Nowak's defense attorney that Nowak had been "overcharged" by police detectives because of her high profile.
"This has nothing to do with Ms. Nowak being an astronaut," Davis said. "This is about what she did."
Nowak flew on the space shuttle in 2006 but was dismissed from the astronaut corps after her arrest. She has since been on active duty at a Navy base in Corpus Christi, Texas. Oefelein, 44, was also forced out of NASA.
The Associated Press contributed to this story.