All About Physics

The magnetic North Pole is on the move again—and it’s happening faster than ever before.

Scientists from NOAA and the British Geological Survey have just released the updated World Magnetic Model (WMM), recalibrating where compasses and navigation systems point to magnetic north. While the geographic North Pole stays fixed, the magnetic North Pole—where Earth’s magnetic field points straight down—shifts due to the swirling motion of molten iron and nickel deep within our planet.

For centuries, magnetic north wandered slowly through Canada. But in the past 20 years, it sped up dramatically, racing toward Siberia at a rate of up to 50 km (31 miles) per year. Now, it has slowed down to 35 km (22 miles) per year—the biggest deceleration scientists have ever seen. The movement is likely driven by two massive magnetic "lobes" under Canada and Siberia.

This shift matters. Using the old model could throw navigation off by as much as 150 km (93 miles) on long journeys. Thankfully, devices like smartphones update automatically. But for aviation, shipping, and defense systems, accurate magnetic data is essential. The new 2025 model even includes a higher-resolution map—offering over 10x the detail of previous versions. A small shift, but a major update.

Scientists have captured something that shouldn't be imageable: the orbital of an electron in a hydrogen atom. This isn't a metaphor or artistic rendering—it's actual data showing where electrons exist as quantum probability clouds rather than defined particles.
The 2013 breakthrough at Lund University used photoionization microscopy, exciting hydrogen atoms with lasers and tracking thousands of escaping electrons to map their original probability distributions. The resulting image shows colorful rings representing the electron's wave function—the mathematical description of where quantum mechanics predicts it should appear. This confirms visually what equations have predicted for nearly a century: electrons don't orbit like planets but exist as diffuse clouds of probability.
The technique reveals quantum mechanics operating at its most fundamental level. Before measurement, the electron exists everywhere in its orbital simultaneously, described by a wave function. Upon detection, it appears at a specific location—quantum superposition collapsing into reality. By repeating this thousands of times, researchers reconstructed the probability pattern, turning abstract quantum theory into tangible imagery. It's the closest we've come to seeing the inherently unseeable structure of atoms🔬🔭

Finland is taking a major step toward a future without plugs or cables by developing a wireless power system that can transmit electricity through the air. What once belonged to science fiction is now entering real world testing, showing that energy may soon be delivered without physical connections at all.

For more than a century, electricity has depended on wires, grids, and metal pathways. This new Finnish approach challenges that foundation by using precisely controlled electromagnetic fields to send power safely through open space from a transmitter to a receiver. It signals a potential shift in how energy could be distributed in the future.

When we think of rare materials in the universe, diamonds often come to mind. But wood? That’s nearly impossible. Unlike minerals, metals, or ice, wood is a product of biology, making it one of the rarest substances in the cosmos. The universe is vast, but living processes that produce materials like wood are exceptionally uncommon.

Wood forms through complex biological processes involving growth, sunlight, water, and nutrients—conditions that are extremely rare beyond Earth. While stars, planets, and even diamonds can form naturally under the right cosmic conditions, wood requires life. This makes it a unique reminder of how extraordinary and fragile life is on our planet.

The rarity of wood highlights the incredible diversity of materials produced by life. Each tree, branch, and plank is a product of billions of years of evolution and adaptation. In the cosmic scale, Earth is a special haven where biology has produced something so familiar to us, yet virtually non-existent elsewhere.

Thinking about wood in space also sparks imagination. Could alien life somewhere in the universe produce something similar? Or is Earth one of the only places where such a material exists? These questions remind us of the uniqueness of life and how little we truly know about the cosmos.

So next time you see a tree, branch, or wooden object, remember: in the vast universe filled with diamonds, metals, and gas clouds, wood is a rare treasure, a product of life itself, and a reminder of the extraordinary nature of our planet.

☄️ Get ready to kick off the new year with a celestial bang!

On the night of January 3-4, the Quadrantid meteor shower will reach its sharp, intense peak. Unlike most showers that stay active for days, the "Quads" are famous for a short, concentrated window of activity—lasting only about 6 hours.

This year, we have a challenge: The peak coincides with a Full Moon, which will wash out the fainter shooting stars. However, don't let that discourage you! The Quadrantids are legendary for producing bright fireballs—meteors that can outshine even the moonlight.

🔭 Viewing Tips for 2026:

⏰ Time it Right: The peak window is narrow! The best viewing is typically in the early morning hours of January 4th, just before dawn.

🌕 Block the Moon: Since the moon will be bright, find a spot where a building or tree blocks the moon from your direct line of sight.

🌌 Look North: The radiant point is near the Big Dipper (in the former constellation Quadrans Muralis). Face north/northeast, but scan the whole sky to catch the long trails.

🧣Bundle Up: This is a winter shower for the Northern Hemisphere. Bring blankets and hot cocoa!

Happy skygazing! ✨

🌍 Deep beneath our feet, a Moon-sized iron sphere has quietly changed the way it spins.

For decades, seismologists thought Earth’s solid inner core rotated slightly faster than the mantle and crust, powered by the churning liquid outer core more than 4,800 kilometers below the surface. New research now shows that around 2010, this inner core began to slow down and is currently rotating a bit more slowly than the rest of the planet, a subtle “backtracking” that has persisted for roughly 14 years.

The discovery comes from a clever use of seismic waves generated by powerful earthquakes. By tracking how specific seismic phases, such as PKIKP waves that pass through the inner core, changed over several decades, researchers matched repeating waveforms from similar quake–station pairs and reconstructed the core’s changing orientation over time.

The data show the inner core first “super‑rotated” from about 2003 to 2008, then reversed direction and slowed to two to three times less than its previous forward speed between 2008 and 2023.

This shifting rotation may be driven by a delicate balance between electromagnetic forces in the outer core and gravitational coupling with dense regions of the mantle. In principle, such changes can slightly alter Earth’s overall rotation, tweaking the length of a day by only a few thousandths of a second—far too small to notice in daily life, but crucial for understanding the deep interior.

Future seismic monitoring and improved geodynamo models will probe whether this slowdown is part of a longer, possibly 70‑year cycle, or a sign that Earth’s inner core is more complex than anyone expected.

📄 RESEARCH PAPER

📌 Wei Wang et al., "Inner core backtracking by seismic waveform change", Nature (2024)

🚌 Why is walking easier than standing in a moving bus? 🤔

Logarithmic Map of the Observable Universe 🤯⁠
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Swipe for more — from Earth all the way to the cosmic web 👉🌌⁠
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Map credit: Pablo Carlos Budassi & theoreticalhub
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From left to right, objects are placed by their distance from Earth — starting in our neighborhood and ending at the edge of the observable Universe.⁠
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Slides:⁠
1️⃣ Inner Solar System⁠
2️⃣ Outer Solar System⁠
3️⃣ Milky Way⁠
4️⃣ Cosmic Web of Galaxies⁠
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This logarithmic map spans nearly 20 orders of magnitude, showing (in one continuous scale!) how wildly distances change across space. You’ll spot everything from spacecraft, moons, and planets to star systems, nearby galaxies, and enormous large-scale cosmic structures.⁠
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Note: Objects are shown much larger than scale so you can actually see their shapes.⁠
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