The Earth stands alone in the solar system as a habitable world, as far as we know. But that doesn’t mean we don’t get visitors, most often in the form of (usually harmless) asteroids. Some even ...

A new NASA mission will capture images of Earth's invisible "halo," the faint light given off by our planet's outermost atmospheric layer, the exosphere, as it morphs and changes in response to the ...

Much as we may treasure and proclaim our independence, we actually live in a protective bubble called the heliosphere.

The gravitational force of the Moon does not act uniformly across the entire Earth; it is strongest at point A, which is the ...

Wang Kechao, the popular science director of the Purple Mountain Observatory of the Chinese Academy of Sciences, introduces ...

The moon will appear a striking red color for millions of people around the world thanks to a total lunar eclipse in the first weekend of September — but sadly, it won't be visible from the United ...

An asteroid the size of a commercial jet passed closer to Earth than the Moon on September 3, 2025, in a high-speed flyby that drew global attention from skywatchers and astronomers alike. According ...

Eclipse paths were long calculated using Besselian elements, a set of parameters that assume spherical bodies and ... that accounts for not only the sun's radius and the moon's topography but also — ...

Correction: An earlier version of this story misstated the overall duration of the eclipse. The moon will appear a striking red color for some around the world thanks to a total lunar eclipse in the ...

The moon goes by many names. August saw the full sturgeon moon while in March sky-gazers may have witnessed the blood moon, which occurs when the satellite appears to turn red during a lunar eclipse.