5 questions per day. How to play

Q1. Space

This phenomenon is a form of electromagnetic radiation that can be detected from all directions in space

It has a uniform temperature of approximately 2.7 Kelvin across the entire observable universe

It was accidentally discovered in 1964 whilst testing a radio telescope antenna

It provides strong evidence for the Big Bang theory and the early expansion of the universe

It is often called the 'afterglow' or 'echo' of the Big Bang itself

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I don't know

Brilliant cosmic knowledge! 🌟✨

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Better luck next time, stargazer! 🌠

The correct answer is Cosmic microwave background.

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cosmic microwave background

2026-09-07

0-1

What is this?

Five is a daily quiz game. Each day everyone across the world gets the same five questions, which are AI-generated.

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First, read the category for this question - in orange at the top. Then read the first hint on a pink background. Now you can make a guess at the answer by starting to type in the white response field. As you type, possible answers will appear - click one to choose it as your answer. You'll either be correct - well done! - or incorrect in which case you'll get the next hint and another try.

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