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Loading contentAstronomy on Asteria Star is the science of everything beyond Earth: the objects that fill the cosmos, how they form and change, and how we study them. Each topic below is a gateway to structured, source-backed reference material. We describe what is well established and clearly separate it from interpretation.
Luminous spheres of plasma powered by nuclear fusion.
The 88 official sky regions and their patterns of stars.
Gravitationally bound systems of stars, gas, dust, and dark matter.
Interstellar clouds of gas and dust — stellar nurseries and remnants.
Worlds orbiting the Sun, from rocky terrestrials to gas and ice giants.
Rounded worlds that share their orbital zone with other bodies.
Natural satellites orbiting planets and smaller bodies.
Planets orbiting stars beyond the Sun.
Rocky and metallic remnants from the early Solar System.
Icy bodies that grow tails as they near the Sun.
Space rocks that survive the fall to a planet's surface.
Regions where gravity is so strong not even light escapes.
Brilliant active galactic nuclei in the distant universe.
Rapidly spinning neutron stars that beam radiation.
The explosive deaths of stars.
Groups of stars born from the same cloud.
Robotic and crewed journeys that explore the Solar System and beyond.
The vehicles and probes built to travel and work in space.
Observatories in orbit, above the blur of the atmosphere.
Ground-based sites built to study the sky.
The scientists who study the universe — a working directory.
What to see in the sky, and when.
A cultural and symbolic tradition — clearly labeled as such.
Tools for the sky — astronomical and traditional.
Definitions, history, and the human context of the sky.
See the universe — through verified, openly licensed imagery.
Learn the sky, step by step.