Astronomy knowledge platform
Everything Above Earth
A premium, source-first atlas of the universe — planets, moons, galaxies, nebulae, missions and observatories — with real scientific imagery on every page.
93 topic areas · 87 entries · 7354 graph entities · 12875 mapped connections
Featured
Real objects, real imagery
GalaxyAndromeda Galaxy
The nearest large spiral to the Milky Way, imaged across the spectrum.
NASA/JPL/California Institute of Technology · NASA media (public domain)
Supernova remnantMost Detailed Image of the Crab Nebula
The expanding wreck of a star seen exploding in 1054 CE.
NASA/ESA/JPL/Arizona State Univ. · NASA media (public domain)
PlanetHubble Close-up Portrait of Jupiter
The Solar System's largest world and its centuries-old storm.
NASA Goddard · NASA media (public domain)
Space telescopeBy the Dozen: NASA's James Webb Space Telescope Mirrors
Infrared eyes on the earliest galaxies and forming stars.
NASA/Goddard Space Flight Center · NASA media (public domain)
Explore the platform
Seven knowledge hubs
From physical astronomy and observing to reference, calculators, and the cultural history of the sky.
21 topicsAstronomy
The universe, studied with evidence.
12 topicsSky Guide
What to see in the sky, and when.
16 topicsAstrology
A symbolic tradition, presented as culture.
12 topicsCalculators
Methods for the sky — astronomical and traditional.
12 topicsEncyclopedia
Definitions, history, and the human context of the sky.
12 topicsObservatory
See the universe — through verified, openly licensed imagery.
- 8 topics
Guides
Learn the sky, step by step.
Astronomy Photo of the Day
September 10, 2026
Cassini Global Portrait of Saturn
A natural-color Cassini mosaic of Saturn and its rings floating against black space.
NASA/JPL/Space Science Institute · NASA media (public domain)
Astronomy is evidence
Scientific pages are sourced from institutions, observatories, datasets, and peer-reviewed literature. Unknown values stay blank; imagery is real and credited.
Tradition is labeled
Mythology and astrology are handled as culture, history, and symbolism — clearly separated, never presented as proven physical science.
Connected knowledge
The knowledge graph
Objects, missions, instruments, discoveries and cultural records are linked — without flattening science and tradition into the same claim.
Star
Sirius
The brightest star in the night sky, in Canis Major.
- Belongs toCanis Major
- Associated withThe Winter Triangle
- Associated withThe Winter Hexagon
- Associated withBinary Star Systems
- Associated withAll-Sky Star Atlas
Constellation
Orion
- IncludesBetelgeuse
- IncludesRigel
- Linked in myth toOrion (myth)
- ContainsOrion Nebula
- Associated withOrionids
Space telescope
James Webb Space Telescope
- Operated byNASA
- Operated byESA
- Operated byCanadian Space Agency (CSA)
- StudiesEagle Nebula
- StudiesOrion Nebula
From the Journal
AsteriaStar Journal
Astronomy and space-science reporting held to the same sourcing standard as the platform’s data — every claim traceable to where it came from.
- DataData and provenance on AsteriaStarHow AsteriaStar records where every scientific value came from — field-level provenance, the honesty envelope on live data, and what the platform does when a provider cannot be reached.
- GuidesHow to read a discovery announcementA practical guide to reading astronomy discovery news — what a sigma actually means, why "Earth-like" is usually about size alone, and the six questions that tell you how much of an announcement to believe.
- GuidesHow we source astronomy and space scienceThe sourcing hierarchy AsteriaStar Journal works to — which sources count as primary, why a preprint is not a result, and how to tell an agency announcement from a measurement.
Ways to explore
Observatory tools
Scientific knowledge with editorial discipline.
AsteriaStar is a durable astronomy knowledge system: sourced entries, structured data, real image provenance, and internal links that scale without losing trust.