Sure now we get live HD from the ISS like it's nothing, but much of the last half century of space exploration has never been seen by most in anything other than grainy analog broadcasts. That'll change in June once When We Left Earth: The NASA Missions debuts on Discovery Channel, drawing from more than 150 hours of NASA footage, called a cross between The Right Stuff and EHD fave Planet Earth. The Orlando Sentinel mentions the new doc is part of a push to ensure funding to speed further space explorations, as long as they provide more great HD opportunities we're all for it. Look for the Blu-ray boxed set July 24 for $79.95.

 
What we're watching: Not much on HDTV tonight. HBO HD is showing the three episodes of Rome it has already aired, so you can catch up on that series if you want. Also, there's HDNet boxing at 9:30 p.m. with Jaidon "The Don" Codrington and Curtis "Showtime" Stevens. Over on ESPN 2-HD, there's NCAA Football: Houston at UTEP, but I'm afraid I can't tell you what UTEP stands for because I don't know.

Here are some other HDTV programs showing on selected networks today:

ABC: Hope & Faith (9 p.m.), Less than Perfect (9:30 p.m.)

CBS: Threshold (9 p.m.), Late Show with David Letterman (11:35 p.m.)

NBC: Crossing Jordan (10 p.m.), The Tonight Show (11:35 p.m.)

Fox: Bernie Mac (8 and 8:30 p.m.), Reunion (9 p.m.)

WB: What I Like About You (8 p.m.), Twins (8:30 p.m.), Reba (9 p.m.),

ESPN-HD: NFL Live (3:30 p.m.), Baseball Tonight (10 p.m.), SportsCenter (11 p.m.)

ESPN 2-HD: NCAA Football: Houston at UTEP (8 p.m.)