20th Century YA and Middle Grade Science Fiction (615 books)

This list is for YA and middle grade science fiction published in the 20th century.

No fantasy! Science fiction only, encompassing futuristic, dystopian, post-apocalyptic, and space themed stories. Books on this list must be published for the YA and middle grade market.

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1	A Wrinkle in Time (Time Quintet, #1) by Madeleine L'Engle 3.97 avg rating — 1,275,344 ratings score: 1,693, and 18 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
2	The Giver (The Giver, #1) by Lois Lowry (Goodreads Author) 4.12 avg rating — 2,780,414 ratings score: 1,264, and 13 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
3	Ender’s Game (Ender's Saga, #1) by Orson Scott Card 4.31 avg rating — 1,466,250 ratings score: 1,090, and 11 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
4	Mrs. Frisby and the Rats of NIMH by Robert C. O'Brien 4.17 avg rating — 184,819 ratings score: 559, and 6 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
5	Enchantress from the Stars (Elana, #1) by Sylvia Engdahl (Goodreads Author) 3.95 avg rating — 4,184 ratings score: 529, and 6 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
6	The Tripods Trilogy (The Tripods, #1-3) by John Christopher 4.20 avg rating — 3,043 ratings score: 444, and 5 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
7	A Wind in the Door (Time Quintet, #2) by Madeleine L'Engle 3.99 avg rating — 131,709 ratings score: 422, and 5 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
8	This Time of Darkness by Helen Mary Hoover 4.29 avg rating — 704 ratings score: 391, and 4 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
9	A Wrinkle in Time Quintet (A Wrinkle in Time Quintet, #1-5) by Madeleine L'Engle 4.34 avg rating — 5,347 ratings score: 388, and 4 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
10	The Girl Who Owned a City by O.T. Nelson 3.79 avg rating — 5,455 ratings score: 378, and 4 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
11	Gathering Blue (The Giver, #2) by Lois Lowry (Goodreads Author) 3.82 avg rating — 207,747 ratings score: 376, and 4 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
12	Escape to Witch Mountain by Alexander Key 3.91 avg rating — 3,651 ratings score: 373, and 4 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
13	Anna to the Infinite Power by Mildred Ames 3.94 avg rating — 638 ratings score: 362, and 4 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
14	A Swiftly Tilting Planet (Time Quintet, #3) by Madeleine L'Engle 4.07 avg rating — 111,370 ratings score: 327, and 4 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
15	The White Mountains (The Tripods, #1) by John Christopher 3.95 avg rating — 14,635 ratings score: 324, and 4 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
16	Searching for Lucky #3002: A Ben and Blue Mystery by Ellen Melissa Cohen 4.76 avg rating — 38 ratings score: 300, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
17	This Place Has No Atmosphere by Paula Danziger 3.85 avg rating — 1,790 ratings score: 292, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
18	Podkayne of Mars by Robert A. Heinlein 3.67 avg rating — 9,507 ratings score: 290, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
19	A Tale of Time City by Diana Wynne Jones 3.86 avg rating — 5,432 ratings score: 287, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
19	The Last Book in the Universe by Rodman Philbrick 3.91 avg rating — 10,211 ratings score: 287, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
21	Out of the Silent Planet (The Space Trilogy, #1) by C.S. Lewis 3.93 avg rating — 105,867 ratings score: 284, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
22	Children of the Dust by Louise Lawrence really liked it 4.00 avg rating — 2,221 ratings score: 279, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
23	The Rolling Stones by Robert A. Heinlein 3.89 avg rating — 7,774 ratings score: 277, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
24	The Forgotten Door by Alexander Key 4.11 avg rating — 2,793 ratings score: 276, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
25	The Silver Metal Lover (Silver Metal Lover, #1) by Tanith Lee 4.04 avg rating — 4,214 ratings score: 273, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
26	Brother in the Land by Robert Swindells 3.96 avg rating — 1,526 ratings score: 271, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
27	Have Space Suit—Will Travel by Robert A. Heinlein 3.93 avg rating — 31,256 ratings score: 270, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
28	Empty World by John Christopher 3.83 avg rating — 983 ratings score: 269, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
29	Jumper (Jumper, #1) by Steven Gould (Goodreads Author) 3.93 avg rating — 16,028 ratings score: 268, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
30	The Girl with the Silver Eyes by Willo Davis Roberts 4.02 avg rating — 10,805 ratings score: 267, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
31	Among the Hidden (Shadow Children, #1) by Margaret Peterson Haddix 3.99 avg rating — 130,811 ratings score: 266, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
32	Journey Between Worlds by Sylvia Engdahl (Goodreads Author) 3.66 avg rating — 180 ratings score: 264, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
33	When the Tripods Came by John Christopher 3.81 avg rating — 4,829 ratings score: 240, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
33	The Keeper of the Isis Light (Isis, #1) by Monica Hughes 3.87 avg rating — 1,403 ratings score: 240, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
35	Z for Zachariah by Robert C. O'Brien 3.68 avg rating — 17,722 ratings score: 237, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
36	The Iron Giant by Ted Hughes 3.86 avg rating — 12,663 ratings score: 226, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
37	The Wonderful Flight to the Mushroom Planet (The Mushroom Planet, #1) by Eleanor Cameron 4.03 avg rating — 2,602 ratings score: 222, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
38	The City of Gold and Lead by John Christopher 4.08 avg rating — 9,026 ratings score: 206, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
39	Beyond the Dark River by Monica Hughes 3.52 avg rating — 23 ratings score: 203, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
40	Rite of Passage by Alexei Panshin 3.82 avg rating — 3,751 ratings score: 200, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
41	The Domes of Mars (Maurice Gray, #2) by Patrick Moore 3.80 avg rating — 5 ratings score: 199, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
41	A Princess of Mars (Barsoom, #1) by Edgar Rice Burroughs 3.81 avg rating — 60,268 ratings score: 199, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
43	The Martian Tales Trilogy (Barsoom #1-3) by Edgar Rice Burroughs 4.05 avg rating — 9,925 ratings score: 192, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
44	The Green Book by Jill Paton Walsh 3.69 avg rating — 1,760 ratings score: 191, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
45	The Runaway Robot by Lester del Rey 4.02 avg rating — 510 ratings score: 190, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
46	The Space Ship Under the Apple Tree by Louis Slobodkin 4.08 avg rating — 204 ratings score: 189, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
46	Kindred: Young Adult Edition by Octavia E. Butler 4.31 avg rating — 267,572 ratings score: 189, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
48	The Alliance by Gerald N. Lund (Goodreads Author) 4.22 avg rating — 4,561 ratings score: 186, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
49	Ray Bradbury's The Martian Chronicles: The Authorized Adaptation (Ray Bradbury Graphic Novels) by Dennis Calero (Illustrator) 3.75 avg rating — 819 ratings score: 184, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
50	Winter of Fire by Sherryl Jordan 4.31 avg rating — 2,691 ratings score: 182, and 3 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
51	An Acceptable Time (Time Quintet, #5) by Madeleine L'Engle 3.78 avg rating — 23,730 ratings score: 180, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
52	The Isis Trilogy by Monica Hughes 4.22 avg rating — 54 ratings score: 177, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
53	The Hermit Thrush Sings by Susan Butler 4.14 avg rating — 457 ratings score: 176, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
53	Children of Morrow by Helen Mary Hoover 4.17 avg rating — 276 ratings score: 176, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
55	Off the Road by Nina Bawden 3.05 avg rating — 75 ratings score: 174, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
56	The Ennead by Jan Mark 3.27 avg rating — 49 ratings score: 173, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
57	Sprockets: A Little Robot by Alexander Key 4.45 avg rating — 38 ratings score: 172, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
58	The Far Side of Evil (Elana, #2) by Sylvia Engdahl (Goodreads Author) 3.98 avg rating — 569 ratings score: 171, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
59	But We Are Not of Earth by Jean E. Karl 4.18 avg rating — 99 ratings score: 167, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
60	Alan Mendelsohn, the Boy from Mars by Daniel Pinkwater 4.35 avg rating — 1,050 ratings score: 166, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
61	The Last Children by Gudrun Pausewang 3.93 avg rating — 1,110 ratings score: 165, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
61	Eva by Peter Dickinson 3.43 avg rating — 2,264 ratings score: 165, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
63	Moon of Three Rings (Moon Magic, #1) by Andre Norton 3.96 avg rating — 915 ratings score: 163, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
64	The Cure by Sonia Levitin 3.82 avg rating — 896 ratings score: 160, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
64	The Ear, the Eye, and the Arm by Nancy Farmer (Goodreads Author) 3.87 avg rating — 16,359 ratings score: 160, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
66	Children of Time by Deborah Moulton 3.95 avg rating — 37 ratings score: 159, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
66	Star Born (Pax/Astra, #2) by Andre Norton 3.91 avg rating — 1,716 ratings score: 159, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
68	A Rag, a Bone and a Hank of Hair by Nicholas Fisk 4.03 avg rating — 210 ratings score: 158, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
69	Journey Outside by Mary Q. Steele 3.69 avg rating — 322 ratings score: 153, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
70	Found by June Oldham 3.31 avg rating — 103 ratings score: 150, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
70	Star Dog by A.M. Lightner 4.12 avg rating — 100 ratings score: 150, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
72	Futuretrack 5 by Robert Westall 3.97 avg rating — 225 ratings score: 147, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
72	Galax-Arena by Gillian Rubinstein 3.82 avg rating — 779 ratings score: 147, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
74	Those Who Fall from the Sun by Josephine Rector Stone 3.33 avg rating — 3 ratings score: 146, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
75	Return from Witch Mountain by Alexander Key 3.79 avg rating — 611 ratings score: 143, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
76	Out There by Adrien Stoutenburg really liked it 4.00 avg rating — 11 ratings score: 142, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
77	The Other Side of the Sun by Madeleine L'Engle 3.85 avg rating — 2,265 ratings score: 140, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
78	Invitation to the Game by Monica Hughes 3.79 avg rating — 5,673 ratings score: 137, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
79	Star Man's Son, 2250 A.D by Andre Norton 4.02 avg rating — 2,624 ratings score: 133, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
80	The City Beyond the Gates by N. Roy Clifton 4.11 avg rating — 9 ratings score: 128, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
81	Outside by Andre Norton 3.83 avg rating — 103 ratings score: 127, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
82	Why Weeps the Brogan? by Hugh Scott (Author and Illustrator) 3.76 avg rating — 34 ratings score: 126, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
83	David Starr, Space Ranger (Lucky Starr, #1) by Paul French (Pseudonym) 3.71 avg rating — 3,744 ratings score: 124, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
84	The Dying Sun by Gary L. Blackwood (Goodreads Author) really liked it 4.00 avg rating — 13 ratings score: 123, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
85	Matthew Looney's Voyage to the Earth (Matthew and Maria Looney, #1) by Jerome Beatty Jr. 4.21 avg rating — 102 ratings score: 121, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
86	Tom Swift and His Flying Lab (Tom Swift Jr., #1) by Victor Appleton II 3.84 avg rating — 630 ratings score: 120, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
86	Lucky Starr and the Pirates of the Asteroids (Lucky Starr, #2) by Isaac Asimov 3.67 avg rating — 2,361 ratings score: 120, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
88	Lucky Starr and the Big Sun of Mercury (Lucky Starr, #4) by Isaac Asimov 3.67 avg rating — 1,990 ratings score: 119, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
88	Matthew Looney's Invasion of the Earth (Matthew and Maria Looney, #2) by Jerome Beatty Jr. 4.06 avg rating — 67 ratings score: 119, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
88	Lucky Starr and the Oceans of Venus (Lucky Starr, #3) by Isaac Asimov 3.67 avg rating — 1,982 ratings score: 119, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
91	The Tomorrow City by Monica Hughes 3.67 avg rating — 168 ratings score: 118, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
92	Portal to E'ewere by Irma Walker 3.93 avg rating — 14 ratings score: 117, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
93	Lucky Starr and the Moons of Jupiter (Lucky Starr, #5) by Isaac Asimov 3.72 avg rating — 1,745 ratings score: 116, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
93	The Rings of Saturn (Lucky Starr, #6) by Paul French (Pseudonym) 3.72 avg rating — 1,643 ratings score: 116, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
95	Matthew Looney and the Space Pirates (Matthew and Maria Looney, #4) by Jerome Beatty Jr. 4.16 avg rating — 45 ratings score: 115, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
96	Encounter Near Venus by Leonard Wibberley 4.21 avg rating — 24 ratings score: 114, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
97	Lizard Music by Daniel Pinkwater 4.15 avg rating — 2,204 ratings score: 111, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
98	Obernewtyn (The Obernewtyn Chronicles, #1) by Isobelle Carmody (Goodreads Author) 3.96 avg rating — 12,478 ratings score: 108, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
99	Tomorrow, When the War Began (Tomorrow, #1) by John Marsden 4.04 avg rating — 60,235 ratings score: 106, and 2 people voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
100	Star Girl by Henry Winterfeld 4.12 avg rating — 152 ratings score: 100, and 1 person voted	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars