Similar to 天文学史
6344 P-L
6344 P-L
6Q0B44E
6Q0B44E
6mミリ波電波望遠鏡
(741081) 2005 LW3
(741081) 2005 LW3(745311) 2010 XC15
(745311) 2010 XC15
7月ペガスス座流星群
Pegasids
AAVSO (小惑星)
8900 AAVSOAbell 262
Abell 262
ACE (探査機)
Advanced Composition ExplorerACRIMSAT
ACRIMSATADS 16402
ADS 16402ADS 7251
ADS 7251AGILE
AGILE (satellite)AMOS (小惑星)
8721 AMOS
Am星
Am starANS
Astronomical Netherlands SatelliteANS (小惑星)
9996 ANSAPL (小惑星)
132524 APLAPM 08279+5255
APM 08279+5255
ARIEL (宇宙望遠鏡)
ARIEL
Arp 220
Arp 220Arp 273
Arp 273
ASTE望遠鏡
Atacama Submillimeter Telescope Experiment
ASTRO-G
Astro-GAT2018cow
SN 2018cow
ATLAS彗星
Comet ATLASATLAS彗星 (P/2019 LD2)
P/2019 LD2 (ATLAS)ATLAS彗星 (C/2019 Y4)
C/2019 Y4 (ATLAS)