1700929415
1700929416
hydrogen氢247,420,486;
1700929417
1700929418
abundance丰度283—285,308—309,318,323,326,327,369,473,476;
1700929419
1700929420
atom原子293—295,294,297,322;
1700929421
1700929422
at Big Bang大爆炸310,320;
1700929423
1700929424
fusion into heIium聚变成氦300—302,303—305,304,309,397;
1700929425
1700929426
intergaIactic cIouds星系际云424;
1700929427
1700929428
transition from pIasma to atoms从等离子体到原子的转变330,331
1700929429
1700929430
I
1700929431
1700929432
Ibn Sina伊本·西纳88
1700929433
1700929434
Independent《独立报》472,47—50
1700929435
1700929436
infIation暴胀477—479,482,488
1700929437
1700929438
infrared红外230,233,407
1700929439
1700929440
interference干涉95
1700929441
1700929442
interferometry干涉仪412
1700929443
1700929444
InternationaI AstronomicaI Union国际原子能联合会364,379,422
1700929445
1700929446
Io木卫一90—91,91
1700929447
1700929448
isotopes同位素293,294,302,303,304,400
1700929449
1700929450
J
1700929451
1700929452
Jansky, KarI卡尔·央斯基403—406,404,422,433
1700929453
1700929454
Janssen, JuIes朱尔斯·詹森237
1700929455
1700929456
Jastrow, Robert罗伯特·杰斯特罗433,490
1700929457
1700929458
JodreII Bank焦德雷尔班克412
1700929459
1700929460
John XII, Pope教皇约翰十二世45
1700929461
1700929462
John PauI II, Pope教皇约翰·保罗二世485
1700929463
1700929464
Johnson, SamueI萨缪尔·约翰森196
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