SECOM Space Archive

If you've been following this series, you already know that the gap between a bold announcement and sound engineering is often where the most interesting analysis lives. ( See Part 3 on Einstein's biggest blunder for context on how even geniuses miscalculate. ) Today, we apply that same scrutiny to the SpaceX-xAI "Orbital Intelligence" initiative — one of the most consequential and contentious engineering bets of 2026. Three months ago, I got into a debate with a friend about Elon Musk's plan to build data centers in space. I was skeptical. My argument was straightforward: space has no medium for convective heat transfer, and radiation alone can't handle the thermal load of serious computing. My friend ended the debate with a single sentence: "Do you really think Elon Musk would announce that without knowing such a basic fact?" I had no comeback. But here's what I've since learned: my physics instinct was correct. The heat problem is ...

This is Part 3 of our ongoing series on the expanding universe. If you missed Part 2, start with How Did Edwin Hubble Discover the Expanding Universe? before reading on. It was 1995. Freshman year. Late at night in a dorm common room, a National Geographic documentary flickered on a battered television set. The narrator's voice dropped to something just above a whisper. Astronomers, he explained, had pointed the Hubble Space Telescope at a patch of sky so dark and empty it looked like a void burned into the fabric of space itself. Then the image loaded. That "empty" darkness was not empty at all. It was teeming —thousands of entire galaxies, each containing hundreds of billions of stars, packed into a sliver of sky no larger than a grain of sand held at arm's length. The room went quiet. That moment rewired something permanent in the brain. The universe was not the backdrop to human history. It was the ...

I first heard the name "Hubble" through a telescope—not a man. It was the early 1990s, middle school, and the news was full of it. I remember standing outside on a clear night, the kind of night that doesn't really exist anymore in most cities, stars sharp and unhurried overhead, wondering what that silver machine orbiting Earth was actually looking at. The sky felt enormous. Unknowable. What nobody told me then—what almost nobody told anyone for decades—was that the ruler Hubble used to measure that enormous sky was built by a woman who earned 25 cents an hour, went deaf, and died before the world understood what she had done. This is Part 2 of our series on the architects of modern cosmology. If you missed the beginning, start with Part 1: Edwin Hubble in Indiana . The Harvard Computers: a room full of brilliant women paid less than factory workers to map the entire sky. The Factory That Mapped ...

Before Edwin Hubble ever pointed a telescope at Andromeda and shattered humanity's conception of the cosmos, he was blowing a coaching whistle in a small Indiana gymnasium — and translating Spanish shipping manifests at a desk in Louisville, Kentucky. The man who proved the universe is expanding spent a full year doing neither astronomy nor law. What he actually did during that gap is one of the most humanizing, under-told stories in the history of science. This is the forensic truth behind 1913–1914: the year a Rhodes Scholar became a high school teacher, a mythmaker, and — almost accidentally — the most important observational astronomer who ever lived. For a deeper look at the philosophical implications of Hubble's discoveries, see our previous post on the Block Universe Theory . The future cartographer of the cosmos, center-back, dark suit — because even in a gym, Hubble dressed like he had s...

I was watching a baseball game last weekend. The closer hurled a 161 km/h fastball . The batter had 0.4 seconds — and crushed it. Sitting there, I started wondering: is human reaction time even enough for that? Then the physics rabbit hole swallowed me whole, and I ended up somewhere far stranger — a paradox that makes your walking pace rewrite the present moment in a galaxy 2.5 million light-years away. Buckle up. ( Missed our last post? Start here. ) The Andromeda Paradox: Your Stroll Is Tearing "Now" Apart The core fact: Einstein's Special Relativity (1905) proved that simultaneity is relative. Two observers with any velocity difference share a slightly tilted "slice" of spacetime — their personal definition of "right now." Two people. Same street. Completely different "nows" — separated by three days and 2.5 million light-years. H...