An astronomer is a scientist who studies celestial objects.

Nature Abhors a Vacuum

Aristotle once postulated “horror vacui” (Nature Abhors a Vacuum). It turns out nature really can’t stand a perfect vacuum.

Immanuel Kant Made Important Scientific Discoveries

Kant V. Hume - Hume's Fork

Kant predicted the effect of tides on the earth’s rotation, the composition of nebulae and the solar system, and a multi-galaxy universe in 1755; his theories weren’t fully confirmed until the 1900’s.

Galileo Invented the Telescope

Did Galileo Invent the Telescope?

The telescope is credited to Hans Lippershey in 1608. The following year Italian astronomer Galileo Galilei began making improvements to its design.