Follow a young girl as she explores questions about the wondrous search for another Goldilocks planet.

The Overlords appeared suddenly over every city-intellectually, technologically, and militarily superior to humankind. Benevolent, they made few demands: unify earth, eliminate poverty, and end war. With little rebellion, humankind agreed, and a golden age began. But at what cost? With the advent of peace, man ceases to strive for creative greatness, and a malaise settles over the human race. To those who resist, it becomes evident that the Overlords...

The fifth novel in Asimov's popular Foundation series opens with second thoughts. Councilman Golan Trevize is wondering if he was right to choose a collective mind as the best possible future for humanity over the anarchy of contentious individuals, nations and planets. To test his conclusion, he decides he must know the past and goes in search of legendary Earth, all references to which have been erased from galactic libraries. The societies encountered...

Describes the sun and each planet of the solar system and introduces concepts such as a day, a year, orbit, and rotation.

"The past few years have seen an incredible explosion in our knowledge of the universe. Since its 2009 launch, the Kepler satellite has discovered more than two thousand exoplanets, or planets outside our solar system. More exoplanets are being discovered all the time, and even more remarkable than the sheer number of exoplanets is their variety. In Exoplanets, astronomer Michael Summers and physicist James Trefil explore these remarkable recent discoveries:...

While Nita's sister and her dad host three young alien wizards, teenage wizards Nita and Kit travel halfway across the galaxy as part of an exchange program and find themselves again caught up in the dark doings of their nemesis, the Lone Power.

Takes readers on an interplanetary tour from the sun to the ever-mysterious Mars, and then, thanks to the Voyager missions, to the planets beyond.

Since its formation nearly five billion years ago, our planet has been the sole living world in a vast and silent universe. But over the past two decades, astronomers have discovered thousands of "exoplanets," including some that could be similar to our own world, and the pace of discovery is accelerating. In a fascinating account of this unfolding revolution, Lee Billings draws on interviews with the world's top experts in the search for life beyond...

Everyone is curious about life in the Universe, UFOs and whether ET is out there. Over the course of his thirty-year career as an astrophysicist, Adam Frank has consistently been asked about the possibility of intelligent life in the universe. Are aliens real? Where are they? Why haven't we found them? What happens if we do? We've long been led to believe that astronomers spend every night searching the sky for extraterrestrials, but the truth is...

When the First Foundation was conquered by a force Seldon had not foreseen the overwhelming power of a single individual, a mutant called the Mule - the second Foundation was forced to reveal it's existence and, infinitely worse, a portion of its power. One man understood the shifting patterns of the inhabited cosmos. This was Hari Seldon, the last great scientist of the First Empire. The mathematics of psychohistory enabled Seldon to predict the...