Der Index wurde automatisch aus den Astronomie- und Raumfahrtkategorien generiert. Neue Artikel bitte kategorisieren statt hier von Hand eintragen, damit sie beim nächsten Update erfasst werden.
- A1 (Rakete)
- A2 (Rakete)
- A3 (Rakete)
- A4b (Rakete)
- A4 (Rakete)
- A5 (Rakete)
- Abarischer Punkt
- Abbe, Ernst
- Abbot, Charles Greeley
- Abee (Meteorit)
- Abenddämmerung
- Aberporth
- Aberration (Astronomie)
- Abetti, Antonio
- Abetti, Giorgio
- Abplattung
- Abreißkalender
- Abschussrampe
- Absolute Chronologie
- Absolute Helligkeit
- Abundantia (Asteroid)
- Ab urbe condita
- Acamar
- ACE (Sonde)
- Achernar
- Achilles (Asteroid)
- Achird
- Achondrit
- Achterdeck des Schiffs
- ACRIMSat
- Acrux
- Acubens
- Adams, John Couch
- Adar
- Adelie Land
- Adeona (Asteroid)
- Adhara
- Adler (Sternbild)
- Adonis (Asteroid)
- Adrastea (Mond)
- Adria (Asteroid)
- Aegina (Asteroid)
- Aegle (Asteroid)
- Aemilia (Asteroid)
- Aeneas (Asteroid)
- Aerobee
- Aerobraking
- Aethra (Asteroid)
- Agenau
- AGK3
- Aglaja (Asteroid)
- AGM-114 Hellfire
- AGM-65 Maverick
- Ägyptischer Kalender
- Ahnert, Paul Oswald
- Ahnert-Rohlfs, Eva
- Ain (Stern)
- Air Mass
- Airy, George Biddell
- Aitken, Robert Grant
- Aitne
- AKG2
- Akkretionsscheibe
- Akrab
- Aktive Optik
- Aktiver Galaktischer Kern
- Aladfar
- Alamak
- Albaldah
- Albali
- Albedo
- Albert (Asteroid)
- Albiorix (Mond)
- Albireo
- Alchiba
- Aldebaran
- Alderamin
- Aldhafera
- Aldhibah
- Aldrin, Edwin
- Alexandra (Asteroid)
- Alfecca Meridiana
- Alfirk
- Algenib
- Algieba
- Algol
- Algorab
- ALH84001 (Meteorit)
- Alhena
- Alinda
- Alioth
- Al Kalb al Rai
- Alkalurops
- Alkes
- Alkeste (Asteroid)
- Alkione (Stern)
- Alkmene (Asteroid)
- Alkor
- Alkurah
- Allende (Meteorit)
- Almagest
- Al Minliar al Asad
- Al Nair
- Alnilam
- Alnitak
- Alniyat
- Al Niyat
- Alpha Centauri (Stern)
- Alpha Centauri (TV)
- Alphard
- Alrakis
- Alrischa
- Alsafi
- Alshat
- Altair
- Altais
- Altarf
- Altar (Sternbild)
- Alte deutsche Monatsnamen
- Alterf
- Althaea (Asteroid)
- Altkalendarier
- Aludra
- Alula Australis
- Alula Borealis
- Alwaid
- Alya
- Alzir
- Amalthea (Asteroid)
- Amalthea (Mond)
- Amateurastronom
- Amateurastronomie
- Amateur Telescope Making
- Ambrosia (Asteroid)
- Amor (Asteroid)
- Ampella
- Amphitrite (Asteroid)
- Analemma
- Ananke-Gruppe
- Ananke (Mond)
- Anaximander
- Ancha
- Andøya
- Andromache (Asteroid)
- Andromedanebel
- Andromeda (Sternbild)
- Angelina (Asteroid)
- Angetenar
- Ångström, Anders Jonas
- Ankaa
- Annefrank (Asteroid)
- Ansari X-Prize
- Antarctic Search for Meteorites program
- Antares
- Antigone (Asteroid)
- Antiope (Asteroid)
- Anti-Raketen-Rakete
- Apollo 10
- Apollo 11
- Apollo 12
- Apollo 13
- Apollo 14
- Apollo 15
- Apollo 16
- Apollo 17
- Apollo 18
- Apollo 1
- Apollo 4
- Apollo 5
- Apollo 6
- Apollo 7
- Apollo 8
- Apollo 9
- Apollo (Asteroid)
- Apollo-Projekt
- Apollo-Raumschiff
- Apollo Rettungsturm
- Apollo-Sojus-Projekt
- Apollo-Typ
- Approach and Landing Test
- April
- Apsis (Astronomie)
- Aquariden
- Aqua (Satellit)
- Äquatorial
- Äquinoktium
- Arago, Dominique Francois Jean
- Archenhold, Friedrich Simon
- Archenhold-Sternwarte
- Arcturus
- Arecibo-Botschaft
- Arecibo Observatorium
- Arete (Asteroid)
- Arethusa (Asteroid)
- Ariadne (Asteroid)
- Ariane 1
- Ariane 4
- Ariane 5
- Ariane (Rakete)
- Arianespace
- Ariel (Mond)
- Aristarchos von Samos
- Aristyllos
- Arkab Posterior
- Arkab Prior
- Armillarsphäre
- Armstrong, Neil
- Arneb
- Artemis (Asteroid)
- Artemis (Raumfahrt)
- Aryabhata
- Asbolus (Asteroid)
- Aschain
- Asellus Australis
- Asellus Borealis
- Asia (Asteroid)
- AsiaSat 3
- Askella
- Aspidiske
- Asterion
- Asterix (Satellit)
- Asteroid
- Asteroidengürtel
- Asterope (Stern)
- Astra
- Astraea (Asteroid)
- Astralkult
- Astrid-2
- ASTRIUM
- ASTRO-F
- Astrofotografie
- Astrogeodäsie
- Astrograf
- Astrolabium
- Astrometrie
- Astronom
- Astronomie
- Astronomische Dämmerung
- Astronomische Einheit
- Astronomische Koordinatensysteme
- Astronomische Refraktion
- Astrophysik
- Astrospektroskopie
- Atacama Large Millimeter Array
- Atala (Asteroid)
- Atalante (Asteroid)
- Ate (Asteroid)
- Aten (Asteroid)
- Äther (Physik)
- Athor (Asteroid)
- Atik
- Atlantis (Raumfähre)
- Atlas (Mond)
- Atlas (Rakete)
- Atlas (Stern)
- Atmosphäre
- Atria
- Aubakirow, Toktar Ongarbajewitsch
- August
- Aura (Satellit)
- Aurora (Asteroid)
- Ausonia (Asteroid)
- Austria (Asteroid)
- Automated Transfer Vehicle
- Autonoe (Mond)
- Auwers, Arthur
- Avior
- Aw
- Azaleh
- Azelfahague
- Azha
- Azimut
- Azmidiske
- Azteken-Kalender