Space and Astronomy Atlas

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The universe & how we observe it

Every discovery, one connected map of the universe.

Space and Astronomy Atlas is a cross-referenced encyclopedia of the universe, from the solar system and stars to galaxies, cosmology, and the missions and instruments that observe them. Search any theory, object, or scientist and follow its threads through every field that builds on it.

Browse the DirectoryCompare disciplines
284Celestial Objects107Missions and Programs194Spacecraft5,356Entries
13,289Sourced facts

Browse by Field

Every section of the atlas.

Celestial Objects

14
Asteroids and Minor Planets
16 entries
Black Holes and Compact Objects
2 entries
Comets
10 entries
Dwarf Planets
9 entries
Exoplanets
8 entries
Galaxies
58 entries
Interstellar Objects
2 entries
Moons
33 entries
Multiple Star Systems
16 entries
Nebulae
29 entries
Planets and the Sun
9 entries
Star Clusters
67 entries
Stars
21 entries
Trans-Neptunian and Outer Solar System Objects
4 entries

Missions and Programs

8
Crewed Lunar Program Missions
17 entries
Early Crewed Spaceflight Milestone Missions
7 entries
Early Uncrewed Satellite and Reconnaissance Programs
4 entries
Robotic Lunar Exploration Missions
27 entries
Robotic Mars Exploration Missions
16 entries
Robotic Outer Solar System and Small-Body Missions
21 entries
Robotic Venus Exploration Missions
7 entries
Space Station and Space Shuttle Programs
8 entries

Spacecraft

15
Cargo Spacecraft
10 entries
Crewed Spacecraft
28 entries
Launch Vehicle
6 entries
Lunar Lander
22 entries
Lunar Rover
3 entries
Mars Helicopter
1 entry
Mars Lander
3 entries
Mars Orbiter and Lander
5 entries
Mars Rover
6 entries
Robotic Manipulator System
2 entries
Satellite
12 entries
Space Probe
76 entries
Space Shuttle Orbiter
6 entries
Space Station
9 entries
Suborbital Launch Vehicle
5 entries

Space Agencies and Companies

13
Human Spaceflight and Space Station Companies
18 entries
In-Space Servicing and Infrastructure Companies
22 entries
Launch and Space Transportation Companies
56 entries
Legacy Aerospace and Defense Conglomerates
29 entries
Lunar and Deep-Space Exploration Companies
21 entries
Satellite Manufacturing Companies
19 entries
Satellite Services and Operators
22 entries
Space Agencies of Africa
25 entries
Space Agencies of Asia
181 entries
Space Agencies of Europe
220 entries
Space Agencies of Latin America and the Caribbean
23 entries
Space Agencies of Northern America
91 entries
Space Agencies of Oceania
20 entries

Astronauts and Cosmonauts

11
Canada
14 entries
China
29 entries
France
9 entries
Germany
9 entries
International Partner and Guest Astronauts
34 entries
Italy
7 entries
Japan
13 entries
Private Spaceflight Participants
16 entries
Soviet Union and Russia
46 entries
United Kingdom
3 entries
United States
96 entries

Pioneers

4
Computing and Guidance Pioneers
12 entries
Mission Control and Program Leadership
26 entries
Space Science and Rocketry Theorists
40 entries
Spacecraft and Rocket Engineers
37 entries

Observatories and Instruments

3
Ground-Based Optical Observatories
83 entries
Ground-Based Radio and Millimeter Observatories
28 entries
Space-Based Observatories
31 entries

Concepts

4
Astrobiology and the Search for Life
12 entries
Cosmology and the Early Universe
16 entries
Orbital Mechanics and Spaceflight Engineering
32 entries
Planetary Science and Astronomical History
9 entries

Launch Vehicles

13
China
7 entries
Europe
7 entries
France
1 entry
India
4 entries
Israel
1 entry
Japan
4 entries
Other National Programs
2 entries
Russia
3 entries
South Korea
1 entry
Soviet Union
4 entries
United Kingdom
1 entry
United States
16 entries
United States Private Company
9 entries

What you can do here

Explore & connect

Open any entry and follow it outward through everything it touches: the people, the observations, the instruments and the ideas it rests on. See what cites it in return.

Compare disciplines

Set two or more disciplines, theories or missions side by side and see where their evidence, their claims and their limits actually overlap.

Featured today

A cross section of the collection.

Astronauts and Cosmonauts

Fyodor Yurchikhin

Fyodor Yurchikhin is a Russian cosmonaut who flew five long-duration missions to the International Space Station between 2002 and 2017, commanding sev

Pioneers

Reinhold Tiling

Reinhold Tiling was a German engineer, pilot and rocket pioneer who moved from aviation into rocket development in the late 1920s. In 1928 he register

Observatories and Instruments

Green Bank Telescope

A radio telescope in rural West Virginia operated by the US National Radio Astronomy Observatory, completed in 2000 with a fully steerable, unblocked

Concepts

Geocentric Model

The geocentric model is the ancient and medieval astronomical framework holding that Earth sits stationary at the center of the universe, with the Sun

Launch Vehicles

New Glenn

Blue Origin's heavy-lift orbital launch vehicle, named for astronaut John Glenn, with a reusable first stage designed to land on a sea-based platform

Celestial Objects

951 Gaspra

951 Gaspra is an S-type asteroid orbiting very close to the inner edge of the main asteroid belt, discovered in 1916 by the Russian astronomer Grigory

Missions and Programs

Ulysses Mission

The Ulysses mission was a joint project of the European Space Agency and NASA, under ESA leadership with participation from the National Research Coun

Spacecraft

Voyager 2

A robotic space probe launched by NASA in August 1977, sixteen days before its twin Voyager 1. It remains the only spacecraft to have visited Uranus a

An Open Question

A gap nobody has closed yet, rotated daily.

Contemporary Syrian government and public administration reporting

Which Syrian official currently heads the Syrian Space Agency: the one named in its own infobox, or the different one named in its own article text?

See This Question