Disney and Marvel's latest sci-fi adventure, "Guardians of the Galaxy", zapped new life into a struggling summer box office with an otherworldly $94 million in its first week, far exceeding the studio's expectations.

Last week's No. 1, "Lucy", starring Scarlett Johanssen, dropped to second place with an estimated $18.2 million, and the James Brown biopic "Get on Up" debuted in third place with $14 million.

The top ten:

"Guardians of the Galaxy," $94M;

"Lucy," $18.2M;

"Get On Up," $14M;

"Hercules," $10.7M;

"Dawn of the Planet of the Apes," $8.7M;

"Planes: Fire and Rescue," $6.4M;

"The Purge: Anarchy," $5,5M;

"Sex Tape," $3.5M;

"And So It Goes," $3.3M;

"A Most Wanted Man," $3.3M

Figures courtesy of Boxofficemojo.com