Can you believe it’s been seven years since my Grand Tour that occasioned this blog? Well, if you are among my ones and ones of followers, you might recognize the fact. It hardly seems possible that it was that long ago. At the same time, the world has changed dramatically since 2018, and that Tour seems like a lifetime ago!

If you don’t know, the Grand Tour was the bulk of my 2018 sabbatical in which I visited 17 astronomical observatories and facilities in nine states in under three months. It was an amazing journey of history, cutting edge science, and discovery. I grew to admire the incredibly detailed work of scientists, the remarkable persistence it requires of them, and the ingenuity and cleverness they deploy to make fantastic discoveries about the universe and our place in it. I mean, that’s a lot of superlatives right there, and it barely scratches the surface of what they do. To learn more about it, just go through my blog posts about it.

Now, it’s 2025, seven years later, and time for another sabbatical. This time, I got it in my mind to work on a book about time and eternity from scientific and theological points of view. This came to me last year when we were on our way across Texas to see the solar eclipse. I was thinking about a summer preaching series, and the eclipse put me in mind of the timing of the movements of the spheres. We happen to live in an era when the moon is just the right distance from the earth to match the apparent size of the sun to create a total eclipse. This doesn’t happen just everywhere in the universe, and it doesn’t happen forever. in a few million years the moon will have moved further from earth and won’t be able to cover the whole solar disk. So we live in a remarkable time. That’s what got me thinking about time as a sermon series theme. Then I realized I could make it into a book during this sabbatical! So that’s been the plan.

As it happens, I now suspect that it is impossible to write a book of much substance in three months. So I’ve scaled back my expectations a bit but still plan to work on the project. I’m thinking about questions like: What is the nature of time? Why do we bother with it at all? Does the past persist? Where does the future come from? What is eternity, and how long is it really? Would humans actually enjoy living forever? Does our view of eternity affect how we behave in this life? I have so many questions! The idea is to consider them scientifically and from a particular Christian framework in a way that is accessible, thought provoking, and maybe even fun. We’ll see how that all turns out. At this point I’m imagining a collection of essays that could be the basis for sermons, lessons, and a deeper book in the future.

Meanwhile, Molly and I have just celebrated our 35th wedding anniversary – hurray! So as part of the sabbatical and as a celebratory trip, we are going out west. We will spend a week at Ghost Ranch, a Presbyterian conference center in northern New Mexico. Each of us is taking a class – Molly on writing children’s books and me on painting still-life and landscapes. Then we’re going to Chaco Canyon National Historical Park, a Native American heritage site that I had hoped to get to on the Grand Tour of ’18. The site includes a number of archaeo-astronomical installations to mark solstices and equinoxes and such. It would have been the oldest observatory on my previous tour. Now it will be a stepping stone in considering deep time for life on earth. And the stepping stones get older and deeper! After Chaco, we will visit Meteor Crater near Winslow, AZ, and then the Grand Canyon. I hope these big holes in the ground will give me a richer sense of the passage of geological time that might just make it into the book.

So there you go! That’s what I’m going to be up to for the next few weeks and months. I hope to keep the updates coming here, and I hope you’ll come along for the ride. It’s going to be a fun time!