Astronomy

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December Solstice Begins Winter in Northern Hemisphere, Summer in Southern

Despite lengthening daylight from today, the coldest weeks typically arrive in January and February due to Earth's thermal lag.

Ursid Meteor Shower Peaks Tonight Into Early Monday Under New-Moon, Solstice Skies

Ursid Meteor Shower Peaks Tonight With Best Viewing Before Dawn

Winter Solstice Arrives Dec. 21 at 10:03 a.m. ET, Marking the Northern Hemisphere’s Shortest Day

Geminid Meteor Shower Peaks Overnight With Up to 120 Meteors per Hour

Geminid Meteor Shower Peaks Dec. 13–14 With Dark Skies and Up to 150 Meteors an Hour

Geminid Meteor Shower Set to Peak Dec. 13–14 With Mostly Moon-Free Skies

Winter Solstice Arrives Dec. 21 as Sunsets Begin to Shift Later

Geminid Meteor Shower Peaks Dec. 13–14 Under Moon-Friendly Skies

Cold Moon Caps 2025 With Final Supermoon Seen Around the World

Cold Moon Supermoon Caps 2025, Peaking at 6:14 p.m. ET on Dec. 4

Cold Moon Supermoon Peaks on Dec. 4, Most Extreme Until 2042

Geminid Meteor Shower Begins Today, With Peak Expected Dec. 13–14

Cold Moon on Dec. 4 Will Be 2025’s Final Supermoon and the Highest in Northern Skies Until 2042

Cold Supermoon Peaks Thursday Evening, Highest Full Moon of 2025

Cold Moon to Cap 2025 With Final Supermoon on Dec. 4

Dec. 4 ‘Cold Moon’ Supermoon Leads December’s Geminids and Ursids

Saturn’s Close Pass With a Half‑Lit Moon Highlights Its Stationary Pause as Mercury Turns Direct

Leonids Peak Before Dawn With Best Views Early Nov. 18

Leonid Meteor Shower Peaks Overnight With Modest Rates and Dark Skies