Articles

Branches of Astronomy

17 Branches of Astronomy

Astronomy is all-encompassing that studies matter outside of Earth. The branches of astronomy are astrophysics, astrometry, astrogeology and astrobiology.

How Gravity Works

How Gravity Sculpted the Earth

What brings order on Earth is gravity. For all matter, it’s always at work. This is how gravity works for ocean tides, planet formation and escape velocity.

Goldilocks Zone

What is the Goldilocks Zone?

Lucky for us, Earth is in the Goldilocks zone. The range where liquid water persists is 0.99 to 1.7 AU. But it doesn’t necessarily mean life or water exists.

global water distribution

How Much Water Is on Earth?

Water is in the ground, on the surface, in the air and in our bodies. But how much global water distribution is in glaciers, groundwater, rivers and lakes?