Red Giants
Posted inAstronomy & Space

Red Giants

In the main sequence stage (the long middle of a star’s life), a star fuses hydrogen into helium in its core. This fusion produces energy, which pushes outward against gravity’s pull. But once the hydrogen in the core runs out, fusion slows.
White Dwarf Stars
Posted inAstronomy & Space

White Dwarf Stars

When stars die, they don’t all go out in a blaze of glory. Some fade away — quietly, beautifully — leaving behind a glowing core that tells the story of…
Quark Stars
Posted inAstronomy & Space

Quark Stars

A quark star is a hypothetical type of star that forms when a dying massive star collapses beyond the neutron star stage but stops short of becoming a black hole. Inside, matter is crushed so tightly that quarks — the fundamental building blocks of protons and neutrons — break free, forming an exotic soup called quark matter.
Kepler’s Laws of Planetary Motion — Simplified
Posted inAstronomy & Space

Kepler’s Laws of Planetary Motion — Simplified

An ellipse is like a stretched circle. Imagine a circle squeezed sideways — that’s an ellipse. An ellipse has two foci. The Sun sits at one, and the other is empty space. Planets are not moving in perfect circles; their distance to the Sun changes as they orbit.
Space-time
Posted inAstronomy & Space

Space-time

What if I told you that right now, you're surfing through a four-dimensional ocean that can stretch, compress, and ripple like water? Meet spacetime—the invisible fabric that Einstein discovered controls…
Time Dilation
Posted inAstronomy & Space

Time Dilation

A UtopiaCircle Edition What if I told you that time isn't the same for everyone? That right now, astronauts aboard the International Space Station are aging slightly slower than you?…