Moon Stories from Around the World - Night Sky Network

NASA Night Sky Network nightskynetwork.org Moon Stories from Around the World Storytelling is a human tradition There are as many stories about the shapes on the face of the Moon as there are cultures who have observed them. They often relate moral tales or creation stories.

  Things

How Fast Are You Moving When You Are Sitting Still?

The Earth as seen by the Apollo 17 Crew on the way to the Moon. Universe in the Classroom No. 71 • Spring 2007 Page 2 speed of 66,000 miles per hour (107 million km/hr)3. At ... astronomers were not sure how to answer this question. We could measure the motion of the Milky Way relative to a neighbor galaxy, but this galaxy is also

  Earth, Answers

Magnification vs. Resolution - Night Sky Network

1. As you increase magnification (by using different eyepieces), the amount of sky you are looking at will generally get smaller - you are looking a smaller amount of the object you are viewing. The amount of light the telescope is gathering does not change. The resolution of the telescope does not change. The area of sky the scope

Earth Timeline - NASA

Will the Sun die and freeze the Earth? The Sun will eventually run out of fuel and puff out into a big, old, bloated star. This will make the Earth too hot for liquid water before the Sun finally throws off its outer shell and becomes a white dwarf. This will all happen in another 5 billion years. So,

  Earth, Timeline, Earth timeline

Does the Moon Rotate? - NASA

hours of sunset or within two hours after sunrise. To Say: People sometimes wonder if the Moon rotates. To us on Earth, the Moon always has the same face pointed toward us. So the Moon might not seem to rotate. But to someone on the Moon, it certainly does – the Moon experiences

  Moon, Sunset, Ettaro, Moon rotate

Tritium Fact Sheet - Health Physics Society

Agency (EPA), Nuclear Regulatory Commission (NRC) , and Department of Energy (DOE) . Additionally, many individual states now run their own NRC-sponsored regulatory programs for radioactive materials. The DOE and Department of Defense manage the tritium used in nuclear weapons. The regulations in place are aimed at limiting the amount of radiation

  Material, Nuclear, Radiation, Tritium

Protección y seguridad radiológicas

We are exposed to two sources of radiation, natural or back-ground radiation which comes from cosmic space and from other natural sources (primitive materials of our planet) and another artificial (industrial, produced by radiological pro-cedures, warfare, or accidents in handling radioactive sub-stances).

  Material, Radiation, Space

Section 1: Introduction to Radioactive Materials

Radioactive materials are used in producing many of the products we use every day: plastic wrap, radial tires, coffee filters, and smoke detectors. Many medical facilities contain radioactive hazards (medical isotopes are use for diagnosis and treatment of many diseases). Radioactive materials are used for diagnostic radiology, radiation ...

  Introduction, Material, Radiation, Radioactive, Introduction to radioactive materials

Mechanical Properties of Wood

materials. Because wood is a natural material and the tree is subject to many constantly changing influences (such as moisture, soil conditions, and growing space), wood proper-ties vary considerably, even in clear material. This chapter provides information, where possible, on the nature and magnitude of variability in properties.

  Material, Space

Glossary of Radiological Terms - CDC

Glossary of Radiological Terms (continued from previous page) August 2004 Page 4 of 16 Decay, radioactive: disintegration of the nucleus of an unstable atom by the release of radiation. Decontamination: the reduction or removal of radioactive contamination from a structure, object, or person. Depleted uranium: uranium containing less than 0.7% uranium-235, the amount …

  Radiation