Universe Facts

How Many Galaxies Are There?
How Many Galaxies Are There?

The cosmos contains approximately 100 - 200 billion galaxies.

Dark Energy
Dark Energy

Humans can only see about 4% of the matter in the Universe.

Mercury and Venus
Mercury and Venus

The only two planets in our solar system that do not have moons are Mercury and Venus.

Our Sun's Orbit
Our Sun's Orbit

The sun orbits around the Milky Way at a speed of about 220 km (140 miles) per second.

How Long to Orbit Milky Way?
How Long to Orbit Milky Way?

230 million years is the time taken by our solar system to rotate around the Milky Way. Dinosaurs just began to roam on the Earth, the last time Earth was in its current position.

Olympus Mons
Olympus Mons

Olympus Mons(A large shield volcano) on Mars is almost three times the height of Mt. Everest, which is 25 km tall. It is 624 km wide at the base.

Center of The Milky Way
Center of The Milky Way

At the center of our galaxy, The Milky Way lies a black hole called Sagittarius A*, or Sgr A* for short.

What Is Dark Matter?
What Is Dark Matter?

Around 80% of the universe is missing in the form of dark matter and dark energy.

Neutron Star
Neutron Star

The core of a neutron star is very dense. It is so dense that if you take a spoonful of matter from its core, it would weigh 5500 billion kg.