Facts

How hot is the sun?

Thu, 05 Nov 2026 00:00:00 +0000

The sun isn’t one temperature. It’s a giant ball of hot gas made of several layers, and each one has its own temperature. Some of them behave in ways that still puzzle scientists.

Who invented the light bulb?

Thu, 05 Nov 2026 00:00:00 +0000

Ask almost anyone who invented the light bulb and they’ll say Thomas Edison. That answer isn’t wrong, but it leaves out a long line of inventors who made his breakthrough possible.

Why is the sky blue?

Wed, 04 Nov 2026 00:00:00 +0000

It’s one of the first “why” questions almost every kid asks, and the answer involves sunlight, air and the way your eyes work.

Sunlight is a mix of colors

Sunlight looks white, but it is actually a blend of every color of the rainbow. You can see this when light passes through a prism or raindrops and splits into red, orange, yellow, green, blue and violet.

Which animal has the longest lifespan?

Tue, 03 Nov 2026 00:00:00 +0000

Humans tend to think a life of 80 or 90 years is long. Some animals would barely consider that middle age. Here are the record holders, and how scientists figure out their ages.

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