The autumn equinox is now upon us! Today marks the moment that the sun crosses the celestial equator, ushering in the beginning of astronomical autumn in the northern hemisphere, which brings with it ...

The Moon's visibility, including circumpolarity (remaining above the horizon) and invisibility, is determined by its declination, analogous to terrestrial latitude. A celestial object's declination ...

This long-duration comet will make its closest approach to Earth this fall, before disappearing into the outer solar system ...

Each Monday, I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the Northern Hemisphere).

The Hubble Space Telescope reveals how color filters tease out the life cycles of stars in spiral galaxy NGC 6000 — while a ...

The 'equinox eclipse' will bring up to 86% coverage across New Zealand, Antarctica and parts of the South Pacific.

Here's what you need to know to make the most of the partial solar eclipse on Sept. 21, as the moon takes a 'bite' out of the ...

October's full Moon is a rare occurrence and marks the first of three supermoons that will dazzle our skies this year. Here's everything you need to know about the Harvest Supermoon ...

With moonless skies and rare glimpses of an elusive comet, the 2025 Orionid meteor shower is shaping up to be one of the best ...

Saturn maintains high visibility in October, located in Aquarius with its rings appearing nearly edge-on (tilting from 1.5° to 0.6°), which enhances observation of its atmospheric details and major ...

Typically, the full moon closest to the autumnal equinox occurs in September, but this year it will be the latest Harvest ...