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Child's Spinning Top Toy; Shutterstock ID 365058569; purchase_order: -; job: -; client: -; other:

What would happen if a spinning disc approached the speed of light?

Any spinning disc would be torn apart long before it reached the speed of light, say our readers

CHEETAH acinonyx jubatus, Adult running through Savannah ; Shutterstock ID 1652757304; purchase_order: -; job: -; client: -; other:

Must the evolution of an adapted trait in nature reach a limit? Part 2

2CA4Y7K Comet crashing into earth

How would we spot an antimatter comet in our solar system? Part 2

cofee cup on the sand at the sunset; Shutterstock ID 1450632401; purchase_order: -; job: -; client: -; other:

This week’s new questions

CHEETAH acinonyx jubatus, Adult running through Savannah ; Shutterstock ID 1652757304; purchase_order: -; job: -; client: -; other:

Must the evolution of any adapted trait in nature reach a limit?

2CA4Y7K Comet crashing into earth

If an antimatter meteor came into our solar system, how would we know?

2M5GPCD Preparations of plants with bubble wrap for the winter

Should bubble wrap face the inside or outside of the object? Part 2

This sequence of artist's illustrations shows how a black hole can devour a bypassing star. 1. A normal star passes near a supermassive black hole in the center of a galaxy. 2. The star's outer gasses are pulled into the black hole's gravitational fie

This week’s new questions

Disappointed woman packing for a journey: she is standing in front of her suitcase overfilled with clothes, travel and vacations concept; Shutterstock ID 2314449417; purchase_order: -; job: -; client: -; other:

How do you get the most clothes into a suitcase?

Quantum correlation- 3d rendered image of quantum entanglement. Abstract background. Quantum mechanics background. Atomic structure, large collider, CERN concept. Muon Spinning particle, muon g-2, Higgs boson light speed neon stripes abstract image. Collision of Particles in the Abstract Collider.

What happens if an entangled particle falls into a black hole?

The answer to this question depends on how you think about quantum gravity, explains physicist Vlatko Vedral

Why do rainbows refract light into many colours but not clouds? Part 2

Is short-sightedness found in other animals? Part 3

This week’s new questions

Which animals can recognise individual people?