Catalog Search Results
Author
Description
Each night, millions of stars light up the dark skies. Galaxies throughout the universe encompass thousands of stars. The appearance of stars in the sky have intrigued and enthralled humans since ancient time. From constellations to the big bang theory, Stars and Galaxies explores the complex world of astronomy and scientific discovery.
2) Mars
Author
Description
Known as the red planet, Mars is the closest planet to the sun. Easily seen from Earth, Mars has intrigued thousands of people throughout history. Many have wondered whether the planet could be inhabited by forms of life; many have dreamed of exploring the planet. Several successful space projects have revealed interesting facts about the history, make-up, and geology of Mars. Although much has been discovered, mysteries surrounding Mars and its moons...
Author
Description
At one time or another, just about everyone has talked about the end of the world. But what does this phrase really mean? Does it mean the end of the human race? The end of planet Earth? The end of our Sun and solar system? And if the world were to actually end, how and when would it happen? People have been asking these questions for thousands of years. Many religious prophets have predicted the end of the world. Science-fiction writers have created...
Author
Description
In the sixth century B.C.E., the Greek philosopher Anaximander theorized that Earth was at the center of the cosmos. That idea became ingrained in scientific thinking and Christian religious beliefs for more than one thousand years. Defiance of church doctrine could mean death, so no one dared dispute this long-accepted idea. No one except a handful of courageous scientists. In the 1500s and 1600s, men like Nicolaus Copernicus, Johanned Kepler, Galileo...
Author
Description
Huge, towering clouds build up in the sky-it's a super cell. The Doppler radar indicates that the system is rotating. But is there a funnel? Is it touching the ground? Only a storm chaser can confirm when a tornado is present-and help meteorologists warn nearby towns. Whenever severe weather threatens, storm chasers hit the road to hunt for tornadoes, hurricanes, or violent storms. Some drive thousands of miles in just a few days as they follow a...
Didn't find it?
Can't find what you are looking for? Try our Materials Request Service. Submit Request