A great untold story is found in the new documentary “The Space Race” (National Geographic, 9 p.m.), about racial barriers to jet pilots of color and would be astronauts. Talkative test pilot Ed Dwight is interviewed as is former NASA astronaut Guion Blueord.

Besides doing genealogy on celebrities on “Finding Your Roots” and teaching black history at Harvard, Henry Louis Gates Jr. turns out some pretty strong documentary series. His latest, “Gospel” (PBS, 9 p.m., check local listings0 looks at the roots of spirituals in Black music and gospel’s influences from blues and jazz. The two hour first half is tonight; the final two hours are tomorrow. 

While “The Daily Show” (Comedy Central, 11 p.m.) has been trying to figure out who could be a new host after Trevor Noah departed in December, nobody dared to dream that the longtime host that preceded Noah would deign return. But here it is: Jon Stewart back on the desk doing what he does best. His return will come on Mondays only of the four-days-a-week show, which makes Mondays a day of high TV for liberals — it’s also the only day of the week for “The Rachel Maddow Show” (MSNBC, 9 p.m.). 

“The Neighborhood” (CBS, 8 p.m.) returns for its sixth season, with Marty and Calvin struggling with different management styles at work.

Also back is “Bob Hearts Abishola” (CBS, 8:30 p.m.) for its fifth and final season. 

Navy investigations are back in full force with the season 21 (!) premiere of “NCIS” (CBS, 9 p.m.) and third season premiere of “NCIS: Hawai’i” (CBS, 10 p.m.), featuring L.L. Cool J from “NCIS: Los Angeles” as special guest. 

Sterling K. Brown surprises a woman who has cared for his family for six years with the house of her dreams on the season finale of “Celebrity IOU” (HGTV, 8 p.m.).

“America’s Got Talent: Fantasy League” (PBS, 8 p.m.) has its final performances before the finale next week.

The case of an OnlyFans model accused of killing her boyfriend is the perfect lurid tale for “TMZ Investigates” (Fox, 9 p.m.). 

“The Irrational” (NBC, 10 p.m.) meets the man imprisoned 20 years ago for a church bombing. 

The largest group date of the season happens in an exotic locale, Malta, on a two hour episode of “The Bachelor” (ABC, 8 p.m.).

A woman is stalked on “Bad Romance — A Special Edition of 20/20” (ABC, 10 p.m.). 

“Below Deck” (9 p.m.) sees tension rise between two stews.

A pastor claiming to be a pastor on the way to a religious conference is stopped on “Contraband: Seized at the Border” (Discovery, 9 p.m.). 

“Kids Baking Championship” (Food, 8 p.m.) makes cafeteria-style lunches. 

Teams are challenged to renovate guest rooms in 48 hours on “Battle on the Mountain” (HGTV, 9 p.m.).

“Lil Jon Wants to Do What?” (HGTV, 10 p.m.) probably doesn’t include appearing in the Super Bowl Halftime  Show.

The secret hoard of the Knights Templar is one of “Mystery’s Greatest Mysteries” (History, 9 p.m.).

“Death by Fame” (Investigation Discovery, 9 p.m.) looks into the death of James Brown.

A Hollywood sex therapist is stalked on “The Playboy Murders” (Investigation Discovery, 10 p.m.). 

“Stupid Pet Tricks” (TBS, 9 p.m.) with Sarah Silverman moves to its regular time slot, with Jack McBrayer visiting. 

Bobby’s birthday party becomes chaotic on “Love & Hip Hop Miami” (VH1, 8 p.m.). 

“The Impact New York” (VH1, 9 p.m.) hosts a food tasting.  

Turner Classic Movies’ 31 Days of Oscars turns to films cited for art direction, with “Inside Daisy Clover” (7:30 a.m.), “George Washington Slept Here” (10 a.m.), “Pride and Prejudice” (noon), “Brigadoon” (2 p.m.), “The Prisoner of Zenda” (4 p.m.), “Knights of the Round Table” (6 p.m.), “The Adventures of Robin Hood” (8 p.m.), “The Robe” (10 p.m.), “Black Narcissus” (12:30 a.m.), “Tess” (2:30 a.m.) and “Thie Thief of Bagdad” (5:30 a.m.). 

Basketball includes Denver at Milwaukee (NBA, 8 p.m.) and Minnesota at Clippers (NBA, 10:30 p.m.). 

Men’s college hoops include Wake Forest at Duke (ESPN, 7 p.m.), Lehigh at Bucknell (CBS Sports, 7 p.m.), Kansas at Texas Tech (ESPN, 9 p.m.), Elon at Towson (CBS Sports, 9 p.m.) and Prairie View A&M at Florida A&M (ESPNU, 9 p.m.).

Women’s games include Arizona at USC (ESPN2, 9 p.m.). 

Daytime Talk

Kelly Ripa and Ryan Seacrest: Ryan Seacrest, Dr. Gail Saltz. The View: Killer Mike. The Talk: Billy Gardell, Max Greenfield. Drew Barrymore: Carla Hall, Maddie Ziegler. Kelly Clarkson: Lester Holt, Lil Dicky, Breanna Stewart. Jennifer Hudson: Donald Faison, Bobby Berk.  Tamron Hall: Rachel DeAlto, Dylan Sprouse, Sangita Patel, Tripp Bromley, Airi Kataoka. 

Late Talk

Stephen Colbert: John Oliver, Killer Mike. Jimmy Kimmel: Katy Perry, Charles Wesley Godwin. Jimmy Fallon: Michael Cera, Maisie Williams, Steve Kornacki, Sophie Ellis-Bextor. Seth Meyers: Beanie Feldstein, Ben Mendelsohn, Brooks Wackerman. Taylor Tomlinson: Riki Lindhome, Rob Huebel, Vinny Thomas.