Hmmm... There are two pieces named "The Light of Other Days" -- both seem to have a remote viewing theme. The first was Bob Shaw's 1966 short story about "slow glass" (Wikipedia covers that.) The second (the one we're talking about) is the Stephen Baxter novel based on a synopsys left by Arthur C. Clarke. I just barely started this and haven't read any other Baxter novels. But - so far - it's impressive. Interesting characters (and some classic Sci-Fi tropes): A rich father with a vision of creating a remote viewing device (so that he can get footage for his news network) spirits back his estranged Physicist son from Oxford(?), to join him and his half brother (Bobby), in a project to create a wormhole to anywhere in the world and then enlarge it to the point where they can stream photons (video coverage) through it. Bobby's reporter girlfriend wants to use this for surveillance to take down a crooked pastor of a mega-church.
So - quantum physics development, reminiscent of Michael Crichton's Timeline, and a remote viewing goal vaguely similar to T. L. Sherred's 1947, Hall of Fame, "E for Effort" novella (still one of my favorites). Oh... and there is a rogue moon hurtling towards Earth (although perhaps more than a century away...). The very slow ticking clock.