The sun is mostly blocked out by the instrument's occulter, which creates a dark, circular shadow over the sun. . | Credit: Southwest Research Institute The moon hovers over a shadowy void wreathed in ...

But if you were to view the shadow the Moon makes on Earth during this time, not only wouldn't it be circular, but three combining factors mean that it's not even close. There's a grand illusion ...

At around 4:10 a.m. EST (0810 GMT) it will enter the Earth's inner shadow — the umbra — and will be partially eclipsed. This results in a circular shadow advancing over the disc of ...

The Earth is round, so we see it casting a circular shadow on the moon. As the moon orbits Earth, one edge of the moon’s disk appears to darken when it enters Earth’s shadow—we call this the ...

Only a spherical object, he reasoned, could produce a circular shadow from every angle. In the modern day, NASA has used instruments on the Lunar Reconnaissance Orbiter, a robotic spacecraft ...

Conversely, if you're on the centerline, the entire diameter of that circular shadow takes longer to move across you. So, totality lasts the longest. "The edge is a weird place," says Nordgren.

That’s because the Moon this month slides across the northern edge of Earth’s innermost circular shadow, rather than passing through the wider, central part of Earth’s shadow. As a result ...

When the Moon passes through the shadow of Earth that shadow is always the circular shadow of a sphere. An ancient scholar named Eratosthenes, the head of the famous library of Alexandria in Egypt ...