Night

Night (also described as nighttime, unconventionally spelled as "nite") is the period of ambient darkness from sunset to sunrise during each 24-hour day, when the Sun is below the horizon.

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New Engine Taps the Freezing Void of Space To Generate Power at Night

What Is That Bright ‘Star’ In The East At Night?

Exposure to more artificial light at night may raise heart disease risk - EurekAlert!

Humans Used to Sleep Twice Every Night. Here's Why It Vanished.

FDA approves new menopause drug to treat hot flashes, night sweats - EurekAlert!

Light exposure at night and cardiovascular disease incidence - EurekAlert!

Watch the moment a brilliant green fireball meteor turns night to day over Tennessee (video)

'Star Trek: Starfleet Academy' gets all late-night with Stephen Colbert and a steamy scene in NYCC trailer (video)

Radical Plan to Beam 'Sunlight on Demand' at Night Sparks Concerns

Fragments of Bacteria in Our Gut May Lull Our Brains to Sleep at Night

Science history: On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star, dubbed M31-V1, was key to showing that the universe extended far beyond the borders of the Milky Way.

An Early Warning Signal of Dementia Risk May Keep You Up at Night, Study Says

Hostile hoots make robins eat less at night - EurekAlert!

ISS astronaut captures Egypt's glittering Nile River at night | Space photo of the day for Aug. 26, 2025

Secretive mini space shuttle set for Space Coast launch; late-night sonic boom possible

Watch a bright fireball explode above Japan, turning night to day (video)

UTEP study: Drinking coffee at night increases impulsive behavior - EurekAlert!

How to Watch Twin Meteor Showers Peak on the Same Night

Eating Pistachios at Night Could Transform Your Gut Health, Study Reveals

Why you shouldn't worry a nap will stop your child sleeping at night