When you rotate a cube in three-dimensional space, its shadow on a flat surface looks like a square, changing and deforming as the cube turns. That shadow isn’t the cube itself, but a 2D projection of it. Now imagine doing the same with a 4-dimensional cube, also known as a tesseract. When it rotates in 4D space, what we would see in our 3D world is its shadow, a cube that appears to deform, stretch, and fold into itself. Just as the shadow of a cube hides one full dimension, the shadow of a tes

Eta Carinae • Visualization Explores a Massive Star's Great Eruption 8 The Violent Star Eta Carinae Model Is Based On Multiwavelength Observations 25.1.2022 • It was once one of the brightest stars in the heavens, easily visible to mariners navigating by the southern sky in the mid-1840s. But the star Eta Carinae quickly faded into obscurity after its brief outburst. Now, over a century and a half later, NASA space observatories (probing from infrared light through X-rays) have enabled astronome