Eiffel X

A sand pendulum that creates a beautiful pattern only by its movement.

But  why does the ellipse change shape?

The pattern gets smaller because energy is not conserved (and in fact decreases) in the system. The mass in the pendulum gets smaller and the center of mass lowers as a function of time. Easy as that, an amazing pattern arises through the laws of physics.

Listening to the Stars (by a galaxy far, far away…)

A Visual Representation of How Much Larger a Billion is than a Million.⠀ Via u/adriantwo on Reddit

*Reminder: Jeff Bezos is Worth ~111.3 Billion USD

Walking in Paradise

@michelphotography_ch

Librarys on Netherlands

High seas, 1874, Ivan Aivazovski

https://www.wikiart.org/en/ivan-aivazovsky/high-seas-1874