Bhadra

The idea that the universe is expanding is one of the most important discoveries in modern Cosmology. Here’s a clear, student-friendly research-style explanation:

🔭 1. Discovery of Expansion

In 1929, Edwin Hubble discovered that galaxies are moving away from us. By studying light from distant galaxies, he noticed something called redshift—the light stretches toward the red end of the spectrum, showing the galaxies are receding.

🌌 2. What is Expanding?

It’s not just galaxies moving in space—the space itself is expanding. Imagine dots on a balloon: as you blow it up, all dots move away from each other. This idea comes from General Relativity, developed by Albert Einstein.

When two tectonic plates push against each other, the crust bends and folds.

This creates large mountain ranges like the Himalayas.

2. Faulting (Block Mountains)

The Earth’s crust breaks into blocks.

Some blocks rise while others sink, forming mountains.

🌍 Formation of Earth (About 4.5 billion years ago)

1. Giant cloud in space (Nebula)

Everything began with a huge cloud of gas and dust called a nebula.

Gravity pulled this cloud together, forming the young Sun at the center.

2. Dust turns into rocks

Extinct animals

Reviving extinct animals is often called de-extinction

We should revive extinct animals because we can restore ecosystems and dix human mistakes.

ILLUSIONS-

illusions are distorted pictures or videos of something that tricks our brain into thinking that we are seeing it or that a certain things is happening.

ULTRAMARINE 🔵 BLUE-