午夜福利1000集合

Gold jewelry with space for writing; Shutterstock ID 735656746; purchase_order: -; job: -; client: -; other:

Why do jewellery chains in a box become so tightly knotted together?

A jewellery chain, like everything else in the universe, is subject to the second law of thermodynamics, explains one reader

(Original Caption) 7/5/1946-The roller coaster is a rough ride, but do they love it! This unposed photo was taken by the intrepid photographer from a front seat, as the car made a stomach-dropping descent. A companion clutched the camera while he clicked the shutter. ACME ROTO SERVICE FOR IMMEDIATE RELEASE BPA 2 #124

Why do we scream in fear? part 2

INDIA. Bangalore. 2016. Laughing Yoga workshop participant Rie Sakamoto

This week鈥檚 new questions

2SC3YX3 "Lunar X" is seen from Chiyoda Ward, Tokyo on February 5, 2025. When sunlight hit the rim of a crater on the moon, An X-shaped topography appeared on the moon. ( The Yomiuri Shimbun via AP Images )

Space

How to spot the lunar X and V

Physics

Let’s nitpick about the physics of Stranger Things, not its ending

Twisteddoodles: Worried that you’re a hot mess? Don’t be!

Physics

These striking photos are a window into the world of quantum physics

Tom Gauld: How to deal with that nasty cold going around

2G96PYX Uribia, La Guajira, Colombia - May 28 2021: Young Latin Brown Man with Braids on his Head Sits Pensively Waiting for the Sunset in the Desert

Mind

The science that will help you feel more fulfilled with your life

PGRFBG beautiful exoplanet, part of an alien binary star system with a red and blue star (3d space illustration)

Can a planet orbit a binary star system in a figure of eight?

In theory, a planet may be able to orbit a binary star system in a figure of eight, but it may not be particularly stable, explain our readers

Why do we scream in fear?

What good is greed? part 2

This week鈥檚 new questions

Let’s quibble about historical accuracy in Christopher Nolan’s Odyssey