A brief description of the phenomenon known as Precession of the Equinoxes. 

A brief explanation of the zodiac and how it relates to the other constellations in the sky.

A brief order-of-magnitude description of the probability of life elsewhere in the universe beyond earth.

A brief description of two independent methods that give an age of 4.5 billion years old for the Solar System.

A brief description of how we think the Milky Way galaxy formed. Basically, it's a process whereby hundreds to thousands of low-mass dwarf galaxies collided and coalesced to form our our galaxy.

A brief description of why there is no such thing as the dark side of the Moon.

A brief description of taxonomy in science and how it is used to classify objects that are similar to each other.

A brief description of two dwarf galaxies known as the Large and Small Magellanic Clouds that are in orbit around own Milky Way galaxy .

A brief description of Isaac Newton's contributions to science and mathematics. More information is available in the podcasts entitled “What are Newton’s Laws of Motion?” and “What is Newton’s Law of Universal Gravitation?”

A brief description of Galileo's contributions to astronomy.