Astronomy & Space » The Learning Hub

Constellation Dorado — The Cosmic Swordfish

Unlike many ancient constellations tied to Greek and Roman myths, Dorado is a modern constellation, introduced in the late 16th century by Dutch navigators exploring the Southern Hemisphere. Its name, “Dorado” or “golden,” refers to the golden fish, possibly the dolphinfish, popular among sailors in the South Seas.

Astronomy & Space

The Habitable Zone

The Habitable Zone is the distance around a star where a planet is just right for water to exist as a liquid on its surface. Not boiling away. Not frozen forever. We call it many names: The Goldilocks Zone (not too hot, not too cold) The Life-friendly Zone The Water Zone

Astronomy & Space

Red Dwarfs – The Quiet Fires of the Universe

A red dwarf is a small, relatively cool star that shines with a dim red light. In terms of size, it’s only about 7% to 50% the mass of our Sun. That means if our Sun were a basketball, a red dwarf might be the size of a golf ball. Their “red” color comes from their cool surface temperatures — usually around 2,000 to 4,000°C.

Astronomy & 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.

Astronomy & 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…

Astronomy & 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.

Astronomy & 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.