Earth & Space
Why Lightning Arrives Before Thunder
You always see lightning before you hear thunder, and the gap is a clue. How light and sound race, and how to count a storm's distance.
Earth & Space
From why the sky turns red at sunset to how continents formed, the universe is full of questions worth asking. This category explains the natural world and beyond - the physics, the discoveries and the humans who pieced them together. Clear answers without the jargon.
Earth & Space articles
Earth & Space
If the Sun Vanished: Earth's First 8 Minutes
If the Sun suddenly vanished, Earth would not notice for eight minutes. Then the real nightmare would begin. Here is what would happen next.
Earth & Space
Why Is Space Black When the Sun Lights Up Earth?
Why is space black when the Sun floods Earth with light? The answer hides in the air around you and the physics of how light travels.
Earth & Space
Why Pluto Was Demoted: The Story Behind a Planet's Fall
Pluto used to be the ninth planet, then it was not. We explain the demotion, the rulebook astronomers wrote, and why the debate lingers.
Earth & Space
Why We Have Seasons (Hint: Not Because of Distance)
Summer, winter, spring, autumn — why does the year keep changing? It is not distance from the Sun but Earth's quiet, constant lean.
Earth & Space
How Are Rainbows Formed? Light, Water and 42 Degrees
A rainbow splits the sky into seven colours, but the arc is not random. Light, water drops and a single angle explain how rainbows form.
Earth & Space
Why Is the Sea Salty but Rivers Sweet?
Rivers run fresh while the sea stays salty — is the salt carried downstream? Here is the story of how the oceans got their famous taste.
Earth & Space
Why the Sky Is Blue but Sunsets Are Red
A blue sky by day and a red sky at evening feel like magic, but the explanation is pure science — the way light and air bend what we see.
Earth & Space
Why Do Time Zones Exist? The Story Behind Every Hour
It is noon in one country and morning somewhere else. Our story behind the world's time zones and who decided where every hour begins.
Earth & Space
Zealandia: Is Earth's 8th Continent Hiding in Plain Sight?
You grew up learning seven continents, but scientists quietly added an eighth. Meet Zealandia, the mostly submerged land hiding in plain…