A rare annular solar eclipse happens in a few hours, and no one on Earth will see it. Solar eclipses themselves are not all that unusual, but one happens tonight (daytime in the eastern hemisphere) that’s only happened a few times in the past thousand years. Due to a particular arrangement of the Moon in its orbit around the Earth and the point in Earth’s orbit where we are today, the dark, central part of the Moon’s shadow sweeping past the Earth will barely graze our planet, and for less than a minute over one of the most remote places on Earth.
Called a “non-central antumbral" eclipse, in this case the deepest part of the Moon’s shadow will touch the Earth for all of 43 seconds in a far-flung corner of Antarctica. The Moon is just far enough from Earth right now that it’s face will not completely cover the Sun’s disc from this location; rather, it will leave a thin sliver of sunlight all the way around the Sun in an event often called a "ring of fire”. The third image above is a simulation of how the event would look from a few hundred feet above Antarctica at mid-eclipse; the ring of fire just touches the horizon.
Although only penguins might see this sight, it is possible that some Earth-orbiting spacecraft may glimpse it too. The European Space Agency’s Sun observing Proba-2 (aka “Solar B”) satellite and NASA/JAXA Hinode probe could find themselves in just the right place at the right time and see what no human eyes can reveal. The eclipse begins shortly before 06:00 GMT.
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