This one, I want to be straightforward about, has a real scientific plausibility problem that's worth naming directly rather than just cleaning up jargon.
The core issue: stars don't work this way, and it matters here because the whole story's emotional impact depends on the reader accepting the premise as at least metaphorically grounded in how the universe operates. A star that has "burned consistently for millions of years" is typically hundreds to thousands of light-years away — meaning the light reaching Earth tonight left that star hundreds or thousands of years ago. A star instantaneously winking out of existence, with the disappearance itself observed on Earth in real time, and that disappearance being causally simultaneous with a specific child's death down to the minute, isn't just poetic license — it violates the basic physics of how starlight and distance work in a way that's likely to pull a scientifically literate reader (or even a curious kid) right out of the story, especially since the piece frames it as a "literal fact" being reported by an actual astrophysicist, not a poetic gesture.
This is different from the earlier ambiguous pieces (the calendar in the attic, the coincidental judge) where the story deliberately doesn't resolve whether something supernatural happened — this one insists on a literal, provable, timestamped cosmic event, which raises the bar for internal consistency much higher, and it doesn't clear that bar.
Given that, I'd recommend one of two directions: either lean into ambiguity (keep the star's disappearance as something reported, but let the mother's specific need to connect it to Leo's exact time of death remain her own interpretation, not an established astrophysical fact) or move away from the "hyper-luminous permanent star" framing entirely and use something with a plausible real-world analog (a meteor, a satellite, a comet) that can believably appear and vanish in a single night. Here's a version using the first approach — it keeps everything you clearly care about (Leo's belief, the timing, the mother's grief-transformed-to-wonder) but doesn't ask the reader to accept something that contradicts basic astronomy as literal fact:
Leo's Star
When you're raising a young child, you get used to a steady stream of imaginary friends and strange little theories about how the world works. You smile, you nod, you file it under childhood. You assume it's a phase that fades once the world starts explaining itself in more ordinary terms.
My son Leo always seemed to have one foot somewhere else entirely.
Shortly after his sixth birthday, he was diagnosed with a rare, aggressive illness that turned our lives into a blur of hospital appointments and long nights. Even so, his spirit stayed remarkably bright. Every evening, however tired he was, he'd drag his little step stool to the window, look through his toy telescope, and point at one especially bright star cutting through the city haze.
"That one's my friend," he'd tell me. "He told me his name, but it's too big for regular words. He says he's just waiting for me to finish my project down here, so we can go explore the rest of it together."
I'd tuck him in, kiss his forehead, and swallow the lump in my throat. I told myself it was his way of coping — a six-year-old's mind reaching for something enormous and unshakeable to hold onto while his own body felt like it was failing him. We did this every night for fourteen months, tracking that same star through every season.
Last Tuesday, his condition turned quickly, and he passed peacefully just after midnight.
I don't have adequate words for the days that followed. My husband and I came home the next morning in a kind of fog, and I remember sitting at the kitchen counter with a cold cup of coffee, the news playing quietly in the background, none of it really reaching me.
Then something on the screen caught my attention. A local astronomer was being interviewed, visibly rattled, saying that one of the brighter stars visible from our area had, according to viewer reports and some preliminary observatory data, seemed unusually faint or absent that night — an anomaly they weren't yet able to fully explain, something they'd be looking into over the coming weeks.
I don't know, scientifically, what that meant. Stars don't just disappear the way that segment made it sound, and I know enough to know a real answer would take astronomers a long time to sort out, if there even was one beyond ordinary atmospheric interference or a satellite passing through. But I stood there anyway, coffee cup slipping out of my hand, thinking about Leo, about his star, about a small boy who spent fourteen months insisting his friend up there was real and simply waiting for him.
I don't know if any of it means what I want it to mean. I'm not sure it needs to, in order to matter. What I know is that for fourteen months, my son found comfort in something huge and steady and far away, at the exact time his own body felt the least steady thing in the world. And on the one night I most needed to believe he wasn't imagining it, the sky gave me just enough reason to wonder.