Louis Pasteur advanced the understanding of germ theory.

The use of ultrasound improved prenatal care.

Fact #1213 · Science

The Earth's rotation causes the Sun to appear to rise and set.

Fact #304 · Science

Lightning can heat the air it passes through to temperatures hotter than the surface of the Sun.

Fact #5 · Science

The Müller-Lyer illusion makes lines of equal length appear different.

Fact #1464 · Science

Lightning can travel from the ground up into clouds.

Fact #255 · Science

Many coins are made of precious metals such as gold and silver which makes their value higher than face value.

Fact #1672 · Science

Nothing can travel faster than light in a vacuum.

Fact #1739 · Science

Gravitational waves were detected a century after Einstein predicted them.

Fact #1607 · Science