Saturn’s Mysterious Moons (V1)

Saturn’s Mysterious Moons (V1)

Some 900 million miles from the Sun… in the outer regions of our Solar System… orbiting the planet Saturn…. …lies a mysterious world. Enceladus is enveloped in ice. Because nearly all of the sunlight that manages to hit its surface is reflected back into space, it’s one of the brightest objects in the solar system.…

Energy 101: Geothermal Energy

Energy 101: Geothermal Energy

YOU MAY HAVE RELAXED IN A NATURAL HOT SPRINGS POOL. OR SEEN THE OLD FAITHFUL GEYSER BLASTING HOT WATER INTO THE AIR IN YELLOWSTONE NATIONAL PARK. BUT HAVE YOU EVER THOUGHT OF WHERE ALL THAT HEAT COMES FROM? WELL, IT COMES FROM DEEP BENEATH THE SURFACE OF THE EARTH — AND IT’S CALLED GEOTHERMAL ENERGY……

Solar Tsunami

The SOHO spacecraft has recorded the effect of all this rising energy. Its ultraviolet sensors show a wavy pattern of gas on the sun’s surface, along with the super-hot halo of gas called the corona. The white regions are places where the rising gas suddenly escapes. Immense loops of ionized gas, ten times the diameter…

The Water Cycle

The Water Cycle

♫MUSIC♫ ANNE THOMPSON: All the water on Earth today, every drop, is all the water there has ever been on the planet. Freshwater is actually millions of years old. The same water, flowing in a continuous loop- falling as rain and snow from clouds to the Earth’s surface, running in rivers, pooling in ponds, flowing…