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hot Jupiter class exoplanet, gas giant planet lit by an alien sun (3d space rendering); Shutterstock ID 1150780133; purchase_order: -; job: -; client: -; other: -

What would happen if a rogue planet passed through our solar system?

It would depend on a lot, say our readers, from how big it was to the route it took - but it could have significant consequences

Cat Last Word

Why do cats like to sit on newspapers and magazines?

2C166J1 Silhouette of a human with skin flora,microorganisms which naturally colonize the human skin - 3d illustration

This week’s new questions

2H6020J Few pedestrians on the rather busy street in metaverse conceptual reality

Is there evidence disproving the notion we are part of a simulation?

How do we know that gravity has the same speed as light?

CY810A Senior / mature man (aged 71) humorous portrait with prominent bushy wild unkempt eyebrows

This week’s new questions

2T7WK87 Hooper, Colorado, USA - July 21, 2023: An alien welcomes visitors to the UFO Watchtower, a unique roadside attraction in the San Luis Valley.

Could an advanced civilisation develop without the wheel?

HUD Matrix particles grid. Virtual reality. Grid core. Magic explosion star with particles. Acceleration race. Glow lines. Colorful flash. Big bang. Light trails. Glitch effect. Deep space.; Shutterstock ID 1590869041; purchase_order: -; job: -; client: -; other: -

Did abstract mathematics exist before the big bang? Part 2

Group of Asian friends having fun enjoying beach camping in summer

This week’s new questions

A radar-equipped speed camera monitors the traffic on a road, flashing a yellow light when it catches a car exceeding the speed limit, and using technology to identify the vehicle and enforce the law.; Shutterstock ID 2392738707; purchase_order: -; job: -; client: -; other: -

How fast am I moving and in which direction?

Our readers get out their calculators and their General Relativity to answer this one, with some finding that the answer makes them dizzy

This week’s new questions

In a post-apocalyptic world, how long would canned food remain edible?

Do black holes look the same from any angle?

This week’s new questions