At the Northern Hemisphere’s winter solstice the upper half of the Earth is at its furthest lean away from the sun — leading ...

Sunday is the shortest day of the year north of the equator, where the solstice marks the start of astronomical winter. It’s ...

Activity on the sun is not constant; it varies along a cycle of about 11 years. The peak of this solar cycle — called solar ...

Although the Northern Hemisphere's winter solstice typically occurs between December 20 and 23, this year's solstice takes ...

Winter Solstice 2025 arrives on December 21st, marking the Northern Hemisphere's shortest day and longest night. This ancient ...

Virtually moonless night skies will create perfect conditions — if skies are clear — for a possible geomagnetic storm on ...

Shefali Shah and her family experienced the awe-inspiring Northern Lights in Norway, a moment Shefali described as beyond ...

The highlight in the few evenings between the winter solstice and Christmas Day is a waxing crescent moon in the western sky shortly after sunset. On Dec. 22, a 7%-illuminated crescent moon will ...

Mysterious Bright Flashes in the Night Sky Baffle Astronomers Celestial transients shine furiously and briefly. Astronomers ...

New findings shed light on the mechanisms behind a natural purification process and identify the key microbial "teammates" ...

This winter is predicted to be a particularly good one for spotting the green-hued celestial clouds in the night skies of the Northern Hemisphere. Here are six unique ways to gaze at the Aurora ...

A mysterious excess of far-ultraviolet light seen across the Milky Way could come from the annihilation of clumpy dark matter ...