About The Astronomer’s Atlas
The Astronomer’s Atlas exists to make humanity’s knowledge of the universe understandable and accessible to everyone.
Astronomy has a strange problem: it is the science everyone loves, told in units nobody can feel. This site’s answer is a simple promise: start simple, go infinitely deep. Every page begins with an explanation a curious fourth-grader can follow, then opens layer by layer into the real science, with every important figure labeled and traced to its source.
What’s inside
154 deep guides to worlds, stars, galaxies and spacecraft · 6,372 confirmed exoplanets from the NASA archive · all 88 constellations with real star maps · 158 glossary terms · a computed Tonight’s Sky · the astrophysics library · tools, lists, a timeline, and real news that always links to its source.
real stars in the catalogue (not a sample, but the whole Hipparcos–Yale–Gliese set), each one its own page with measured distance, colour and temperature.
About the pictures
Every picture of a real planet, moon, star, galaxy, spacecraft or other object is genuine telescope or mission imagery, credited to its source, or a diagram drawn from measured values and labelled as one. The page banners, the category pictures on the home page and the spectral-class paintings on the Stars page are original artwork generated for the Atlas. None of them stands in for a real object, and no picture is used twice.
Our rules
Facts carry labels (Confirmed, Strong Evidence, Estimated, Hypothesis, Theoretical, Speculative) because pretending certainty is the fastest way to teach wrong things. Missing values say “not measured”, never a guess. News is real journalism from real outlets, always linking out; our own AI-written sky notes are clearly marked. And astronomy changes: when new results land, pages get corrected, not defended.
Full detail in the Methodology, Data Sources and Editorial Policy.
Who it’s for
A kid with a school project. A parent at a telescope. A teacher who needs numbers with sources. An amateur astronomer planning a night out. Anyone who has ever looked up and wanted the rest of the story.
Corrections and questions: contact us.