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The mysteries of space and the search for answers through a historic observatory. Also, the family that lived next door to mass murderer John Wayne Gacy shares the correspondence they had with him.

Sheldon's new obsession with "The Lord of the Rings" leads to an unhealthy habit, forcing him to take a break from science. Also, Missy asks George Sr. to teach her how to play catch. (Repeat).

After being released from the mental hospital, Dr. Sturgis unexpectedly breaks up with Meemaw. (Repeat).

The fifth season ends with Howard and Bernadette deciding to get married before his NASA mission, causing the gang to scurry into overdrive in an effort to stage the wedding. NASA astronaut Mike Massimino has a cameo as himself. (Repeat).

In the Season 8 premiere, Amy and Leonard take a surprise road trip to Arizona to retrieve Sheldon, while Penny goes on a job interview at Bernadette's company, and Howard has problems wrapping his head around Stuart's relationship with Mrs. Wolowitz. (Repeat).

Dana and Adam are given a doll to parent for a school project, but end up in jeopardy of failing because of Beverly's "grand-smothering." Meanwhile, Erica tries to get back at Barry for monopolizing her best friend's time by joining the JTP, however her plan doesn't go as expected. (Repeat).

Adam attends a Phillies game with his dad and ends up lost in the stadium after Murray allows him to leave his seat on his own. Elsewhere, Beverly's guilt trip backfires when Erica and Barry drive off without her during an argument on their way home from the mall. (Repeat).

Monica and Chandler break the news about their cohabitation plans to their respective roommates, but Monica feels slighted when Rachel's reaction doesn't measure up to Joey's. Meanwhile, Phoebe leads a reluctant Ross in an exercise to determine his true feelings for Rachel. Chandler: Matthew Perry. Joey: Matt LeBlanc.

Monica and Chandler disagree about how to redecorate her apartment; Rachel has a hard time finding a new place to live; Joey interviews potential roommates; and Phoebe dismisses Ross's ongoing denial of his feelings for Rachel. Gunther: James Michael Tyler. Rachel: Jennifer Aniston. Joey: Matt LeBlanc.

Losing his health insurance couldn't come at a worse time for Joey; Ross has a jolly good time lecturing to university students; Phoebe's psychic reveals a grim future; and Rachel gets some disturbing news regarding her annulment. Estelle: June Gable. Professor: Rick Fitts. Director: Christopher Darga. Russell: Ron Glass. Ross: David Schwimmer. Phoebe: Lisa Kudrow.

Chicago's wake-up news on WGN with the latest in local stories, sports, and weather. (Live).

Chicago's wake-up news on WGN with the latest in local stories, sports, and weather. (Live).

Chicago's morning news staple with the latest local updates. (Live).

Chicago's morning news staple with the latest local updates. (Live).

Chicago's morning news staple with the latest local updates. (Live).

Chicago's morning news staple with the latest local updates. (Live).

Morning insights on Chicago's food, entertainment, fashion, and wellness trends. (Live).

Chicago's midday news with comprehensive local coverage and sports. (Live).

Chicago's midday news with comprehensive local coverage and sports. (Live).

Get the latest news, weather updates, and sports analysis in Chicago. Stay informed with Spotlight Chicago. (Live).

Obsessive love is discussed. (Repeat).

(Part 2) Repeated fist-a-cuffs, vandalism and police intervention leave the Judge with no other choice than to advise a family to set boundaries with restraining orders. (Repeat).

(Repeat).

Chicago's early evening news with local stories and sports updates. (Live).

Comprehensive evening news in Chicago, covering local news and sports. (Live).

Comprehensive evening news in Chicago, covering local news and sports. (Live).

Simone opens up to Amara when her integrity is questioned. Damon returns and gives some sound advice to JR. Lando is skeptical about his future possibilities. Marcus wants to do everything he can for Noah, but is met with some resistance. Meanwhile, Keisha receives some unexpected help with her dance final. Nate receives some surprising news and gets support from Thea. Cam makes a big gesture, but

All of Smallville comes together to view a meteor shower, Lex Luthor makes his move. (Repeat).

Chicago's prime evening news with local updates, sports, and weather. (Live).

Chicago's evening news with the latest in local events, sports, and weather. (Live).

The latest sports news, highlights and analysis from Chicago's Very Own WGN Sports team. (Live).

When a NASA representative visits Sheldon's school and dismisses his science, Sheldon is set on a mission to prove him wrong. (Repeat).

Faced with a life without physics when he gets fired, Sheldon resorts to weaving ponchos, forcing a worried Leonard to call Sheldon's mother for help. Mary: Laurie Metcalf. Dr. Eric Gablehauser: Mark Harelik. Summer: Sierra Edwards. (Repeat).

Charlie is tricked by his mom and Alan into attending a jingle writers awards dinner, a prize he's never won, where he has to endure comments from a pompous multiple winner (Jon Lovitz). Gordon: J.D. Walsh. (Repeat).

In the third-season opener, Mike assists two loyal customers who need to gear up for their annual moose hunt. Meanwhile, Mike tries to convince Kristin and Ryan to transfer Boyd out of a bilingual school. (Repeat).

Erica plans for her future after high school, deciding to pursue her dream of becoming a singer and putting college on hold, which leads her parents to worry. Meanwhile, an April Fools' Day joke leads to an all-out war between Adam and Barry. (Repeat).

Joey finds the keys to a sports car; Phoebe ropes Chandler and Monica into baby-sitting the triplets; and Rachel accompanies Ross to make sure they get an annulment. Gunther: James Michael Tyler. Woman: Charity Nicole James. Phoebe: Lisa Kudrow. Rachel: Jennifer Aniston.

Chicago's wake-up news on WGN with the latest in local stories, sports, and weather. (Live).

Chicago's wake-up news on WGN with the latest in local stories, sports, and weather. (Live).

Chicago's morning news staple with the latest local updates. (Live).

Chicago's morning news staple with the latest local updates. (Live).

Chicago's morning news staple with the latest local updates. (Live).

Chicago's morning news staple with the latest local updates. (Live).

Morning insights on Chicago's food, entertainment, fashion, and wellness trends. (Live).

Chicago's midday news with comprehensive local coverage and sports. (Live).

Chicago's midday news with comprehensive local coverage and sports. (Live).

Get the latest news, weather updates, and sports analysis in Chicago. Stay informed with Spotlight Chicago. (Live).

Jeffrey and Jennifer's shocking and complicated story continues. During their 11-year marriage,Jeffrey has become so obsessed with Jennifer, he watches her every move. (Repeat).

(Repeat).

A veteran dog-breeder takes issue with a novice attempting to breed papered dogs while having a mutt in the same living space.

Chicago's early evening news with local stories and sports updates. (Live).

Comprehensive evening news in Chicago, covering local news and sports. (Live).

Comprehensive evening news in Chicago, covering local news and sports. (Live).