- 100 Aquarii
- 109 Piscium
- 109 Piscium b
- 10 Andromedae
- 10 Aquarii
- 11 Comae Berenices
- 11 Comae Berenices b
- 11 Leonis Minoris
- 11 Ursae Minoris
- 11 Ursae Minoris b
- 1264
- 14 Andromedae
- 14 Andromedae b
- 14 Herculis
- 14 Herculis b
- 14 Herculis c
- 1556
- 1564
- 1600 BC
- 1610
- 1655
- 1671
- 1672
- 1684
- 16 Cygni
- 16 Cygni Bb
- 16 Psyche
- 1702
- 1781
- 1783
- 1786
- 1787
- 1789
- 1801
- 1802
- 1804
- 1807
- 1846
- 1847
- 1848
- 1849
- 1850
- 1851
- 1852
- 1853
- 1854
- 1856
- 1857
- 1858
- 1861
- 1866
- 1867
- 1868
- 1872
- 1877
- 1886
- 1892
- 1893
- 1899
- 18 Delphini
- 18 Delphini b
- 1904
- 1905
- 1908
- 1914
- 1915
- 1930
- 1938
- 1948
- 1949
- 1951
- 1958
- 1966
- 1974
- 1975
- 1977
- 1978
- 1979
- 1980
- 1981
- 1985
- 1986
- 1988
- 1989
- 1992
- 1993
- 1994
- 1995
- 1996
- 1997
- 1998
- 1999
- 1RXS1609
- 1RXS1609 b
- 1SWASP J140747.93-394542.6 b
- 1 Aquarii
- 1 Boötis
- 1 Persei
- 2000
- 2000 BC
- 2001
- 2002
- 2003
- 2004
- 2005
- 2006
- 2007
- 2008
- 2009
- 2010
- 2011
- 2012
- 2013
- 2013 TV135
- 2015
- 2016
- 2017
- 2018
- 2018 VG18
- 2019
- 2020
- 2020 CD3
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2029
- 2034
- 2036
- 2069 Alpha Centauri mission
- 20 Ceti
- 23 Librae b
- 2MASS J21265040-8140293
- 2MASS J2126–8140
- 2MASS J21392676+0220226
- 2MASX J00482185-2507365 occulting pair
- 2 Andromedae
- 2 Boötis
- 2 Ceti
- 3753 Cruithne
- 3C 273
- 3 Andromedae
- 3 Ceti
- 450 BC
- 46 Ceti
- 486958 Arrokoth
- 49 Ceti
- 4 Andromedae
- 4 Aquilae
- 4 Ursae Majoris
- 4 Ursae Majoris b
- 51 Pegasi
- 51 Pegasi b
- 5261 Eureka
- 52 Europa
- 541132 Leleakuhonua
- 55 Cancri
- 55 Cancri b
- 55 Cancri c
- 55 Cancri d
- 55 Cancri e
- 55 Cancri f
- 5 Andromedae
- 66270
- 6 Ceti
- 964
- A-type asteroid
- A-type main-sequence star
- AB Pictoris
- AB Pictoris b
- AXP 1E 1048.1-5937
- Abell 2667
- Abell 2744
- Abeona Mons
- Achernar
- Adrastea
- Age of the universe
- Air
- Aitne
- Alcyoneus
- Alpha Antliae
- Alpha Centauri
- Alpha Centauri A
- Alpha Sculptoris
- Amalthea
- Ammonia planet
- Ananke
- Andromeda
- Andromeda-Milky Way collision
- Andromeda (constellation)
- Andromeda Galaxy
- Anomalous X-ray pulsar
- Antares
- Antlia
- Aoede
- Apus
- Aquarius
- Aquarius Dwarf
- Arche
- Aries
- Arp 273
- Arrokoth
- Asteroid
- Astronomer
- Astronomical object
- Astronomical unit
- Astronomy
- Astronomy Observations and Theories
- Astronomy Wiki
- Astronomy Wiki/Creating an Article
- Astronomy Wiki/Rules
- Astronomy Wiki/Sandbox
- Atlas of Peculiar Galaxies
- Atmosphere
- Autonoe
- B-type asteroid
- Barnard's Star
- Barnard's Star b
- Barnard 1
- Barnard 10
- Barnard 100
- Barnard 101
- Barnard 102
- Barnard 103
- Barnard 104
- Barnard 105
- Barnard 106
- Barnard 107
- Barnard 108
- Barnard 109
- Barnard 11
- Barnard 110
- Barnard 111
- Barnard 112
- Barnard 113
- Barnard 114
- Barnard 115
- Barnard 116
- Barnard 117
- Barnard 117а
- Barnard 118
- Barnard 119
- Barnard 119а
- Barnard 12
- Barnard 120
- Barnard 121
- Barnard 122
- Barnard 123
- Barnard 124
- Barnard 125
- Barnard 126
- Barnard 127
- Barnard 128
- Barnard 129
- Barnard 13
- Barnard 130
- Barnard 131
- Barnard 132
- Barnard 133
- Barnard 134
- Barnard 135
- Barnard 136
- Barnard 137
- Barnard 138
- Barnard 139
- Barnard 14
- Barnard 140
- Barnard 141
- Barnard 15
- Barnard 16
- Barnard 17
- Barnard 18
- Barnard 19
- Barnard 2
- Barnard 20
- Barnard 21
- Barnard 22
- Barnard 23
- Barnard 24
- Barnard 25
- Barnard 26
- Barnard 27
- Barnard 28
- Barnard 29
- Barnard 3
- Barnard 30
- Barnard 31
- Barnard 32
- Barnard 33
- Barnard 34
- Barnard 35
- Barnard 36
- Barnard 37
- Barnard 38
- Barnard 39
- Barnard 4
- Barnard 40
- Barnard 41
- Barnard 42
- Barnard 43
- Barnard 44
- Barnard 44а
- Barnard 45
- Barnard 46
- Barnard 47
- Barnard 48
- Barnard 49
- Barnard 5
- Barnard 50
- Barnard 51
- Barnard 53
- Barnard 54
- Barnard 55
- Barnard 56
- Barnard 57
- Barnard 58
- Barnard 59
- Barnard 6
- Barnard 60
- Barnard 61
- Barnard 62
- Barnard 63
- Barnard 64
- Barnard 65
- Barnard 66
- Barnard 67
- Barnard 67а
- Barnard 68
- Barnard 69
- Barnard 7
- Barnard 70
- Barnard 71
- Barnard 72
- Barnard 73
- Barnard 74
- Barnard 75
- Barnard 76
- Barnard 77
- Barnard 78
- Barnard 79
- Barnard 8
- Barnard 80
- Barnard 81
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