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Experience a once-in-a-lifetime perspective of a solar eclipse, seen from the window of an airplane.. A solar eclipse occurs when the Moon moves directly between Earth and the Sun, aligning so precisely that it blocks the Sun’s light. Although the Sun is roughly 400 times larger than the Moon,...

103,130 次观看 • 4 个月前 •via X (Twitter)

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A spectacular “Ring of Fire” just blazed across the Antarctic sky today, February 17, 2026 — the first solar eclipse of the year, and a rare annular one that turned the Sun into a blazing celestial halo. In this stunning alignment, the Moon slipped between Earth and the Sun but — because it was near the farther point in its elliptical orbit (close to apogee) — appeared slightly smaller than the Sun's disk. Instead of total darkness, a brilliant ring of sunlight encircled the Moon's dark silhouette, creating that iconic fiery annulus for up to about 2 minutes and 20 seconds at maximum.The path of true annularity carved a narrow corridor roughly 616 km (383 miles) wide and 4,282 km (2,661 miles) long across the icy expanse of Antarctica — one of the most remote and inhospitable places on Earth. Very few humans witnessed the full “Ring of Fire”: perhaps a handful at research stations like Concordia Station, where the peak hit around 19:47 local time (12:13 UTC / 7:13 a.m. EST), with the Sun about 96% obscured.Everywhere else in the vast southern regions, the eclipse appeared as a dramatic partial bite taken from the Sun. Partial phases were visible across:Much of southern Africa (including South Africa, Mozambique, Madagascar) The southern tips of Argentina and Chile Broad swaths of the Southern Ocean, Pacific, Atlantic, and Indian Oceans The event kicked off with the first partial shadows around 09:56 UTC, reached maximum at 12:13 UTC, and wrapped up by 14:27 UTC — a roughly 4.5-hour celestial dance viewed from half a hemisphere away.Astronomy enthusiasts and scientists alike marveled at the precision of orbital mechanics on display: the Moon's apparent size just shy of perfect coverage, the Sun's corona faintly visible around the edges in safe-filtered views, and the eerie dimming of daylight in partial zones.This remote spectacle kicks off what many are calling a golden age of eclipses — with a total solar eclipse coming up on August 12, 2026 (visible from Greenland, Iceland, and northern Spain), followed by more totals and annulars through 2028.A reminder of cosmic rhythm: even in the harshest, loneliest corners of our planet, the universe puts on a show of breathtaking beauty and perfect timing.(Sources: NASA eclipse resources, Wikipedia Solar Eclipse of February 17, 2026, EarthSky, and related astronomical reports.)

Black Hole

11,992 次观看 • 4 个月前

🚨 PARKER SOLAR PROBE JUST FOUND HIGH-ENERGY PARTICLES NEAR THE SUN THAT NO MODEL PREDICTED AND WE DON’T KNOW HOW THEY GOT SO ENERGETIC. During its close passes through the solar corona, NASA’s Parker Solar Probe detected protons accelerated to energies around 400 keV roughly 1,000 times higher than current models of magnetic reconnection at the heliospheric current sheet could explain. The particles appear to be trapped and energized inside magnetic islands that form and merge during reconnection events at the current sheet (the vast surface where the Sun’s magnetic field flips polarity). This mechanism was not expected to produce such high energies so close to the Sun. Why this matters: • It reveals a previously unknown or underestimated source of energetic particles right in the solar corona • Existing models of solar energetic particles have focused mainly on shocks from coronal mass ejections — this suggests reconnection can also be a powerful accelerator • The same process may be contributing more to coronal heating than previously calculated • It has implications for space weather forecasting, since these particles can affect spacecraft and astronauts The deeper implication: Parker is showing us that the physics of the near-Sun environment is more energetic and complex than our models assumed. Magnetic reconnection long known as an important process appears capable of accelerating particles to surprisingly high energies through the merging of magnetic islands. This doesn’t just tweak our understanding of the Sun; it may force revisions in how we model particle acceleration across many astrophysical environments. We’re still in the early stages of understanding what Parker is revealing, but it’s already clear that the corona is more violent and dynamic than we thought. How do you think this discovery might change our models of space weather or solar physics in the coming years? Follow for more updates from Parker Solar Probe and the evolving picture of our Sun.

TheNewPhysics

16,192 次观看 • 12 天前