Sabrina: The Animated Series - Season 1 - Eps 34: The Hex Files
Sabrina's class goes to a science observatory. There she and Harvey visit Uncle Quigley who is doing very poorly at his science career. Sabrina and Salem try to boost his confidence by creating aliens for Uncle Quigley to discover. Only one problem she takes these aliens away from Harvey's video game and when the Science observatory finds out they kick Quigley out until some real aliens come that they all see and Quigley, Harvey, Sabrina, and Salem all send them back to their planet. Because of all of this Quigley is finally recognized as a great scientist.
About Sabrina: The Animated Series

Title: Sabrina: The Animated Series
First Air Date: 1999-09-06
Last Air Date: 2000-02-27
Status: Ended
Rating: 6.7/10 (from 78 votes)
Language: ZH
Seasons: 2
Total Episodes: 65
Network: ABC UPN
Genres: Animation, Sci-Fi & Fantasy, Comedy, Family
Production Companies: Riverdale Productions, DiC Entertainment, Hartbreak Films, Cookie Jar Entertainment, Savage Studios
Synopsis
An animated prequel to the live-action show "Sabrina, the Teenage Witch," the series features 12-year-old Sabrina Spellman, who's half mortal and half witch. Though few people know of her powers, and her mortal uncle frequently warns her not to use her magic to solve problems, Sabrina still borrows spells from the Spookie Jar and gets into trouble with her friend Harvey.
Cast

Melissa Joan Hart
Hilda Spellman / Zelda Spellman (voice)

Nick Bakay
Salem Saberhagen (voice)

Emily Hart
Sabrina Spellman (voice)

Jay Brazeau
Uncle Quigley (voice)

Jason Michas
Slugloafe (voice)

David Sobolov
Spookie Jar (voice)

Chantal Strand
Gem Stone (voice)

Cree Summer
Chloe Flan (voice)

Bill Switzer
Harvey Kinkle (voice)

Bob Bergen
Tim (voice)