Featured
In Search of Other Worlds
Astronomers in the United States reported in March 2000 that they had discovered the smallest planets yet found outside the solar system.
HISTORY OF PHYSICAL SCIENCE
The history of physical science explains how some of the major physics concepts were discovered. Check out these articles on the history of physics.
Stuff You Should Know
-
How did Nikola Tesla change the way we use energy?Who made it possible to light up your home at night? Thomas Edison, right? Yes, but without the work of Nikola Tesla, we would be living in a different world. See more »
-
Who was the first scientist?
We've been observing and experimenting in the name of science for centuries. But when push comes to shove, which inquisitive mind deserves the honors of being humanity's very first scientist? See more »
-
A Spaceship for Tomorrow
When the space shuttle was conceived in the 1970's, the dream of engineers was to create a new kind of spacecraft, one that could carry people and cargo into orbit, return to Earth, and then be used again repeatedly. See more »
-
A Thousand Years of Discovery
Try to imagine what your world would be like if not for the scientific discoveries of the past millennium. See more »
-
Beyond Rockets
Scientists with the National Aeronautics and Space Administration (NASA) realized a nearly 40-year-old dream in July 1999, when Deep Space 1 (DS-1), the first spacecraft to employ an ion engine as its main propulsion system, made a successful fly-by of an asteroid. See more »
-
Beyond the Big Bang
Few of us can look into the starry sky on a clear night without experiencing a sense of awe. See more »
-
Big Waves: Tracking Deadly Tsunamis
Shortly after 7 a.m. on April 1, 1946, the first devastating tsunami waves hit Hilo, Hawaii. See more »
-
Chemistry in a Tube of Toothpaste
Throughout history, people have used many methods to clean their teeth. Some ancient people chewed on frayed twigs. See more »
-
Close encounters with Saturn
Descriptions of the international Cassini-Huygens mission to Saturn tend toward superlatives. See more »
-
Coral Reefs in Peril
An ambitious plan to protect and study the coral reefs of the United States was announced in March 2000 by the U.S. See more »
