BBC’s rock-star scientist, the hunky Brian Cox. He even sounds like Carl Sagan, with his guttural, am-I-speaking-slowly-enough-for-you tone. (Copyright British Broadcasting Corp.; please don’t hurt me for sharing, as I am helping to promote your show.)

Each day, I awake with renewed vigor to resume a stretching, diet and fitness discipline that has the power to extend my life. Equipped with the knowledge, I need only the will.

But if I am to listen to 43-year-old Brian Cox, particle physicist and creator of the “Wonders of the Universe” series airing the past few weeks on Discovery Science channel, there’s little point in it.

As the cosmos moves with unflappable forward force from its ordered state of low entropy to its preferred chaos of high entropy, and, paraphrasing here, all the 200 BILLION stars in our galaxy, including our trusted Sun, hurtle toward fulfilling their destiny of snuffing out and dwarfing all meaning of our existence, I’m left with the nebulous questions Cox starts each episode with: “Why are we here? Where do we come from?”

There’s never an answer, but he does intone, and this is straight from the show: “As the arrow of time plays out [at the end of our Stelliferous Era, when the universe is about100 trillion years old] … the cosmos will be plunged into eternal night … a dark and empty void littered with dead stars and black holes …. yet the vast majority of its life span still lies ahead of it.” Say WHAT? Forget global warming. This sounds pretty serious.

His words, stretched like taffy, go on: “There won’t be a single atom of matter left. … and after an unimaginable length of time .. I really mean it, 10 thousand-trillion-trillion-trillion-trillion-trillion-trillion-trillion-trillion years … for the first time in its life, the universe will be permanent and unchanging … nothing happens. And it keeps not happening, forever.” Our “bright window” of time, in which all life is possible, is laughingly brief — as small a fraction of the universe’s life span as “one-thousandth of a billion-billion-billionth, billion-billion-billionth, billion-billion-billionth of a percent.” Gee, not even Carl Sagan made me feel this insignificant.

Cox’s message is clear: Our time is NOW.

I suppose, then, I’ve no choice but[t] to get right to it and care-take this ever-changing arrangement of molecules I’m entrusted with, my sad-sack body of degenerate matter. Let’s pop in a Richard Simmons workout and sweat to some oldies! Maybe even include on the playlist a peppy track, Things Can Only Get Better, from British pop band D:Ream, a one-hit wonder [of the universe] that flamed out in 1997. Its erstwhile keyboard player: none other than professor big-banging Brian Cox! (The following clip is not the hit — couldn’t find one in which he wasn’t edited out or replaced by a sub, but this one clearly shows his rock-STAR persona.)

Bonus: Brian Cox’s rant on the inane forecast that the universe will end in 2012 (look out, now, keep your hands on the wheel!):