Fossil Fuels. Nuclear Fuels. Acid Rain. Climate Change. Climate Feedback. Ocean Acidification. Rising Sea Level. Gamma decay Gamma decay is one type of radioactive decay that a nucleus can undergo. Figure 1. Different penetration levels of different products of decay, with gamma being one of the most highly penetrating. NASA's Swift satellite recorded the gamma-ray blast caused by a black hole being born This object is among the most distant objects ever detected.
Scientists can use gamma rays to determine the elements on other planets. When struck by cosmic rays, chemical elements in soils and rocks emit uniquely identifiable signatures of energy in the form of gamma rays.
These data can help scientists look for geologically important elements such as hydrogen, magnesium, silicon, oxygen, iron, titanium, sodium, and calcium. The gamma-ray spectrometer on NASA's Mars Odyssey Orbiter detects and maps these signatures, such as this map below showing hydrogen concentrations of Martian surface soils.
Gamma rays also stream from stars, supernovas, pulsars, and black hole accretion disks to wash our sky with gamma-ray light. These gamma-ray streams were imaged using NASA's Fermi gamma-ray space telescope to map out the Milky Way galaxy by creating a full degree view of the galaxy from our perspective here on Earth. The composite image below of the Cas A supernova remnant shows the full spectrum in one image. Gamma rays from Fermi are shown in magenta; x-rays from the Chandra Observatory are blue and green.
The visible light data captured by the Hubble space telescope are displayed in yellow. Infrared data from the Spitzer space telescope are shown in red; and radio data from the Very Large Array are displayed in orange.
A potential new treatment of Covid patients is being developed in Clayton, North Carolina. It uses antibodies Preserved tissue found in a turtle fossil shows that sea turtle hatchlings have been relying on a dark color to help New technology shows how NC State researchers look to history to see what survivors of major extinctions look like.
How survivors adapt in NC State engineers develop a method to stream video and wirelessly charge devices with one signalHow a new method could Skip to main content. Small Amounts of Gamma Rays Come from Everyday Objects October 13, Gamma rays are the most powerful and potentially destructive type of electromagnetic radiation. Literally thousands of x-ray machines are used daily in medicine.
Computerized tomography, commonly known as a CT or CAT scan, uses special x-ray equipment to make detailed images of bones and soft tissue in the body. Medical x-rays are the single largest source of man-made radiation exposure.
Learn more about radiation sources and doses. X-rays are also used in industry for inspections and process controls. Elements in the periodic table can take on several forms. Some of these forms are stable; other forms are unstable.
Typically, the most stable form of an element is the most common in nature. However, all elements have an unstable form. Unstable forms emit ionizing radiation and are radioactive.
There are some elements with no stable form that are always radioactive, such as uranium. Elements that emit ionizing radiation are called radionuclides. Skip to main content. Radiation Protection. Contact Us. Radiation Basics. Dose Calculator.
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