Universe101

Astronomy

Astronomy

Life on Earth

When did life first appear on Earth?

How was the first life on Earth formed?

Previously

Properties of Our Planet

What is the Earth made of?

What are the layers of the Earth?

Up Next

The Moon

When was our moon first formed?

What is the Moon made of?

Dive Deeper

Evolutionary history of lifeTimeline of the evolutionary history of life

Have You Ever Wondered...

What are biomaterials?

How do insecticides kill bugs?

What is Organic Chemistry, and what does it study?

What philosophies and ideas led to the French revolutions?

Do people really have a limited amount of willpower?

What is photosynthesis?