A video capturing a stunning cloud formation that looks like "the stairway to heaven" has captivated users on TikTok. The clip posted by @verivanessa shows a large cloud at sunrise appearing to ...

Consider the optical illusion that consists of a light rectangle next to a dark rectangle. Each rectangle contains a circle.

A small swatch of muslin from the lower-left wing of the Wright Flyer was placed on the underside of the Mars helicopter Ingenuity's solar panel (the dark rectangle) prior to its launch with the ...

The clip posted by @verivanessa shows a large cloud at sunrise appearing to sit just above the horizon, with a long, dark rectangular beam stretching across an orange-pink sky. A note overlaid on ...