The Human Footprint: 8 Billion People on Earth
In flesh and blood, 7.6 billion humans live on Earth. The emergence of humans has left a profound impact. The demand for resources is the human footprint.
Month: August 2018
What Are the 3 Types of Galaxies?
Hubble galaxy classification assigns a class to galaxies based on their visual appearance. These classes of galaxies are ellipticals, lenticulars and spirals
Milky Way Galaxy: 200 Billion Stars and Our Solar System
Galaxies are just large accumulation of stars. For example, we live in the Milky Way galaxy. It houses about 200 billion stars including Alpha Centauri.
How Does the Supercontinent Cycle Work?
If you went 200 million years back in time, Earth was 1 supercontinent. Now, it’s made up of 7 separate continents. This is the supercontinent cycle at work.