Our planet's closest and brightest neighbor will pass approximately between the Earth and sun this week, in what's called an ...

For those of us who approach things by the Goldilocks Principle (not too little, not too much), spring equinox is practically ...

Earth's northern hemisphere warms up literally for the astronomical start to spring. Here's what to know about the season.

Spring 2025 begins tomorrow, and when it comes to the weather forecast, things are looking quite promising for Pennsylvania.

Easter is observed on the first Sunday after the first full moon following the spring equinox. If it seems as if Easter is late this year, you're right. But it's not as late as it could be. Easter's ...

Created from debris trails from Halley’s Comet, the eta Aquariids can be seen from both the Northern and Southern Hemispheres ...

The sheer number of objects suggests scientists will soon have to grapple with what counts as a moon versus what’s just a ...

Exactly two weeks after the "blood moon" total lunar eclipse comes a partial solar eclipse visible to some in North America.

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Mercury, the first planet from the sun, is about to stand out among the stars this week. But this brightness is not expected ...

Thursday's event is a "Micromoon", meaning the moon is the farthest away it gets from Earth, making it appear about seven ...

A rare blood moon lunar eclipse — which hasn’t happened in the U.S. since 2022 — was visible for skywatchers across most of ...