Can moons have moons

Have you wondered if a moon can have its own moon? This video explains that they can not due to physics.

Planet Venus may have life

Here is cool video about Venus having life; If Venus was habitable while our sun was young, and Earth is habitable now, then in roughly a billion years Earth will follow the same path Venus did. Venus, in this view, is not a failed sister planet. It is a preview.

Ruby vs Sapphire

They are similar but different. This video explains everything:

Diamonds do not sparkle

 Video about how and why we see sparkles looking at diamonds.

 Check out my new video about the science of making diamonds.