http://mppl.org/services/youth-department/good-books/?list=Science+Fiction&category=grades+4-5
List: Science Fiction
Last Day on Mars
While waiting to leave Mars before it burns up just like the Earth before it, Liam and his friend Phoebe discover some facts about time and space and realize that the human race is just one of the races trying to survive in space.
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You'll Like It Here (Everybody Does)
Forced to flee a small North Carolina town when the neighbors suspect they are aliens, sixth-grader Meggie Blue and her family leave Earth and arrive in Fashion City, where individuality is punished and the greatest crime is being "grossly unique."
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Virus on Orbis 1
When twelve-year-old Johnny and his sister arrive on Orbits in a space ship of orphans, he finds he has a unique ability to communicate with computers.
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The True Meaning of Smekday
When her mother is abducted by aliens on Christmas Eve (or "Smekday" Eve since the Boov invasion), 11 year-old Tip hops in the family car and heads south to find her and meets an alien Boov mechanic who agrees to help her and save the planet from disaster.
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Spaceheadz
On his first day at Brooklyn's P.S. 858, fifth-grader Michael K. is teamed with two very strange students, and while he gradually comes to believe they are aliens who need his help, he has trouble convincing anyone else of the truth.
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What We Found In the Sofa and How It Saved the World
Finding a rare zucchini-colored crayon leads twelve-year-old River Monroe and his friends on an adventure with their eccentric neighbor to save Earth from invading interstellar storm troopers.
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Saving Lucas Biggs
"When thirteen-year-old Margaret's father is sentenced to death for a crime he didn't commit, she knows the only way to save him is to use the forbidden family power of time travel"--
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The Princess, The Scoundrel, and The Farm Boy : an Original Retelling of Star Wars: a New Hope
Presents an illustrated retelling of the first Star Wars film in which the galaxy's fate lies in the hands of Princess Leia, Han Solo, and Luke Skywalker. The galaxy is at war. Although the Rebel Alliance has won a few battles against the Empire, hope is fading. The Empire is about to unveil the greatest weapon the galaxy has ever seen--the Death Star. The Rebels' only chance to defeat it now lies in the unlikely hands of a princess, a scoundrel, and a farm boy.
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No Passengers Beyond This Point
With their house in foreclosure, sisters India and Mouse and brother Finn are sent to stay with an uncle in Colorado until their mother can join them, but when the plane lands, the children are welcomed by cheering crowds to a strange place where each of them has a perfect house and a clock that is ticking down the time.
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Mars Evacuees
Twelve-year-old Alice Dare is one of 300 seven- to sixteen-year-olds evacuated to Mars to attend school and train as soldiers, safe from the war with Earth's invading aliens, the Morrors, but when all of the adults and robots mysteriously disappear, the youths must survive on their own.
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Archvillain
Twelve-year-old Kyle Camden develops greater mental agility and superpowers during a plasma storm that also brings Mighty Mike, an alien, to the town of Bouring, but while each does what he thinks is best, Kyle is labeled a villain and Mike a hero.
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Jedi Academy
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Invasion of The Dognappers
When nine-year-old Logan discovers that aliens are abducting pet dogs, he and his friends form the Intergalactic Canine Rescue Unit, and Logan stows away on a spaceship in hopes of saving man's best friend.
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Project Alpha
Eight boys and girls compete for a spot on the space voyage that will search for a source to solve Earth's energy crisis.
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Gabby Duran and The Unsittables
Twelve-year-old Gabby is recruited by a secret agency to take care of extraterrestrial children.
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The Fourteenth Goldfish
Ellie's scientist grandfather has discovered a way to reverse aging, and consequently has turned into a teenager--which makes for complicated relationships when he moves in with Ellie and her mother, his daughter.
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Found
When thirteen-year-olds Jonah and Chip, who are both adopted, learn they were discovered on a plane that appeared out of nowhere, full of babies with no adults on board, they realize that they have uncovered a mystery involving time travel and two opposing forces, each trying to repair the fabric of time.
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Dark Life
When fifteen-year-old Ty, who has always lived on the ocean floor, joins Topside girl Gemma in the frontier's underworld to seek and stop outlaws who threaten his home, they learn that the government may pose an even greater threat.
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Children of Exile
A twelve-year-old girl raised in a foster village is returned to her biological parents, and discovers home is not what she expected it to be.
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Boom! (or 70,000 Light Years)
When Jim and Charlie overhear two of their teachers talking in a secret language and the two friends set out to solve the mystery, they do not expect the dire consequences of their actions.
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