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2001
 

The Americana Annual 2001,  Grolier, Inc.,  ISBN 0-7172-0327-1;   "Astronomy Review of the Year",  pp. 122-123

The New Book of Popular Science:  2001 Annual,  Grolier, Inc.,  ISBN 0-7172-1565-2;  "Astronomers and their Science",  pp. 79-85

ibid.,  "Ask the Scientist:  Astronomy & Space Science",  pp. 86-87

ibid.,  "Astronomy Review of the Year 1999",  pp. 243-244

ibid.,  "Space Science Review of the Year 1999",  pp. 326-328

2000
 

The Americana Annual 2000,  Grolier, Inc.,  ISBN 0-7172-0324-7;   "Astronomy Review of 1999",  pp. 137-138

The New Book of Popular Science:  2000 Annual,  Grolier, Inc.,  ISBN 0-7172-1556-3;  "Weird Things About Weightlessness",  pp. 62-67

ibid.,   "Shadow Chasers",  pp. 74-79

ibid.,   "Once in a Blue Moon",  pp. 80-85

ibid.,   "A Century of Astronomy",  pp. 86-91

ibid.,   "Ask the Scientist:  Astronomy & Space Science",  pp. 92-93

ibid.,   "Astronomy Review of the Year 1998",  pp. 289-290

ibid.,   "Space Science Review of the Year 1998",  pp. 371-375

1999
 

The Americana Annual 1999,  Grolier, Inc.,  ISBN 0-7172-0321-2;   "Astronomy Review of 1998",  pp. 127-128

The New Book of Popular Science:  1999 Annual,  Grolier, Inc.,  ISBN 0-7172-1549-0;  "Our Expanding Universe",  pp. 54-59

ibid.,   "The Tilt of the Earth",  pp. 81-87

ibid.,   "Ask the Scientist:  Astronomy & Space Science",  pp. 88-89

ibid.,   "Astronomy Review of the Year 1997",  pp. 289-290

ibid.,   "Space Science Review of the Year 1997",  pp. 371-375

1998
 

The Americana Annual 1998,  Grolier, Inc.,  ISBN 0-7172-0229-1;   "Astronomy Review of 1997",  pp. 121-122

ibid.,   "Comet Hale-Bopp",  page 123

The New Book of Popular Science:  1998 Annual,  Grolier, Inc.,  ISBN 0-7172-1546-6 ;   "New View of Mars",  pp. 64-70

ibid.,    "Two ‘Stars’ Dimmed",  pp. 97-99

ibid.,    "Ask the Scientist:  Astronomy & Space Science",  pp. 100-101

ibid.,    "Fire in the Sky",  pp. 104-109

ibid ,    "Astronomy Review of the Year 1996",  pp. 289-290

ibid.,    "Space Science Review of the Year 1996",  pp. 371-375

New Book of Popular Science,  Volume 1, Grolier, Inc.,  1998,   ISBN 0-7172-1221-1;   "Planetariums",  pp. 65-72

ibid.,  "Comets",  pp. 158-166

ibid.,  "Asteroids",  pp. 167-169

ibid.,  "Eclipses",  pp. 175-180

ibid.,  "The Milky Way",  pp. 181-189

ibid.,  "Interstellar Space",  pp. 218-223

ibid.,  "Unidentified Flying Objects",  pp. 326-329

Microsoft Encarta Encyclopedia,  Microsoft Corporation,  "Cepheid Variables"

1997
 

The New Book of Popular Science:  1997 Annual,  Grolier, Inc.,  ISBN 0-7172-1535-0;  "Starbirth!",  pp. 64-70

ibid.,  "Day Star",  pp. 75-81

ibid.,  "Ask the Scientist:  Astronomy & Space Science",  pp. 100-101

ibid.,  "Astronomy Review of the Year 1995",  pp. 291-292

ibid.,  "Space Science Review of the Year 1995",  pp. 371-375

Microsoft Encarta 97 Encyclopedia,  Microsoft Corporation,  "M1, Crab Nebula"

ibid.,  "M7"

ibid.,  "M24"

ibid.,  "M25"

ibid.,  "M31, Andromeda Galaxy"

ibid.,  "M39"

ibid.,  "M41"

ibid.,  "M44, Beehive Cluster"

ibid.,  "M47

ibid.,  "M87"

ibid.,  "M106"

ibid.,  "Butterfly Cluster"

ibid.,  "NGC4258";

ibid.,  "NGC 4261"

ibid.,  "Binary Star"

ibid.,  "Black Dwarf"

ibid.,  "Carbon Star"

ibid.,  "Flare Star"

ibid.,  "Multiple Star"

ibid.,  "Neutron Star"

ibid.,  "Pulsar"

ibid.,  "Supergiant"

1996
 

The New Book of Popular Science:  1996 Annual,  Grolier, Inc.,  ISBN 0-7172-1533-4;    "Fire and Ice in the Jovian Sky",  pp. 64-69

ibid.,  "Other Suns, Other Worlds",  pp. 77-82

ibid.,  "Ask the Scientist:  Astronomy & Space Science",  pp. 98-99

ibid.,  "Astronomy Review of the Year 1994",  pp. 295-296

ibid.,  "Space Science Review of the Year 1994",  pp. 371-375

1995
 

The New Book of Popular Science:  1995 Annual,  Grolier, Inc.,  ISBN 0-7172-1530-X;         "New Eyes for Hubble",  pp. 64-70

ibid.,  "The Moon Revisited",  pp. 71-76

ibid.,  "Galileo’s Trip to Jupiter",  pp. 82-88

ibid.,  "Ask the Scientist:  Astronomy & Space Science",  pp. 102-103

ibid.,  "Astronomy Review of the Year 1993",  pp. 307-308

ibid.,  "Space Science Review of the Year 1993",  pp. 372-373

1994
 

The New Book of Popular Science:  1994 Annual,  Grolier, Inc.,  ISBN 0-7172-1527-X;        

"Return to Mars", pp. 14-21

ibid.,   "When Heaven Falls to Earth", pp, 33-40s

ibid.,  "Space Science Review of the Year 1992", pp. 52-53

ibid.,   "UFOs"

1993
 

The New Book of Popular Science:  1993 Annual,  Grolier, Inc.,  ISBN 0-7172-1525-3;        

"Venus & Magellan", pp. 14-19

ibid.,   "Eclipse!", pp. 22-27

ibid.,   "The New Planetarium", pp. 28-34

ibid.,   "Space Science Review of the year 1991", pp 52-53

1992
 

The New Book of Popular Science:  1992 Annual,  Grolier, Inc.,  "Space Science Review of the Year 1990"

ibid.,   "Hubble Space Telescope"

1991
 

The New Book of Popular Science:  1991 Annual,  Grolier, Inc.,  "Voyager 2’s Encounter with Neptune"

ibid.,   "Space Science Review of the year 1989"

1990
 

1989
 

The New Book of Popular Science:  1989 Annual,  Grolier, Inc.,  "Space Science Review of the Year 1987"

Science Annual 1989,  Grolier, Inc.,  ISBN 0-7172-1519-9, "Biosphere II",  pp 20-28

ibid.,  "Space Science Review of the Year 1987",  pp 20-28

1988
 

The Americana Annual 1988, Grolier Inc., 1988,  ISBN 0-7172-0219-4;   "Smoking in Public Places",  p. 350

The New Book of Popular Science:  1988 Annual,  Grolier, Inc.,  "Space Science Review of the Year 1986",  pp 6-7

1987
 

The American Peoples Encyclopedia, Grolier Inc., 1987, ISBN 0-7172-0418-9

"Uranus", p. 469

ibid.,  "Vivisection",  pp. 574-575

1986