Seven Wonders Of Ancient North America

Describes seven monumental ancient North American architectural sites that still exist today, including Jellyfish Cove, the Anasazi Cliff Palace, and the pyramids of Teotihuacâan.

An introduction to the people, places, and beliefs behind seven creations of ancient Central and South America.

Looks at seven natural wonders found in North America, including Niagara Falls, the Grand Canyon, and Yellowstone National Park.

Looks at seven natural wonders of Central and South America, including Angel Falls, the Galapagos Islands, and the Amazon River.

Highlights seven of the world's greatest achievements in space technology.

The universe is full of space phenomena, such as dark matter, dark energy, and the beginning of the universe. Read what astronomers and space scientists have discovered about these amazing wonders and what they have yet to learn.

From earliest times, humans have wondered about the sky above them. People looked at distant stars and wondered what they were made of. They wondered whether any other places in the universe were like Earth. At first people used simple telescopes to study the solar system the Sun and all the planets that circle around it. Later, more powerful telescopes and high-tech machines allowed people to investigate worlds outside the solar system. In this book, we'll explore seven wonders beyond the solar system. We'll look at giant clouds of gas and dust called nebulae. Some nebulae are places where stars are born. Other nebulae are all that remains of stars that have died. Other wonders beyond the solar system include pulsing stars, giant stars, and giant clusters of stars called galaxies. We'll visit them all. And we'll explore the age-old question: Does the universe have any other planets like Earth? We'll learn about scientists who hunt for Earthlike planets and the tools they use. Finally, we'll look at the big picture the universe itself. This vast network of stars, planets, and other objects is the biggest wonder of them all.

Presents information about the asteroids, comets, and meteors found in the solar system, describing their physical components, orbits, and the effects of their possible collisions with the Earth and other planets.