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The atmosphere absorbs gamma rays, preventing them from affecting life on Earth. Because gamma rays cannot penetrate Earth's atmosphere, scientists use satellites in space to study them. Why Is NASA Studying Gamma Rays?Feb 8, 2017

How are gamma rays used in space?

These are produced by spectacular events in the Universe such as stars exploding, matter falling into black holes and celestial objects colliding. By collecting gamma rays, astronomers are able to see these violent events and can judge exactly how they shape the Universe.

What is a gamma ray burst NASA?

Gamma-ray bursts (GRBs) are short-lived bursts of gamma-ray light, the most energetic form of light. Lasting anywhere from a few milliseconds to several minutes, GRBs shine hundreds of times brighter than a typical supernova and about a million trillion times as bright as the Sun.

How are gamma rays used in nuclear industry?

Gamma rays are the highest energy type of electromagnetic radiation and reveal information about the sources that created them. Gamma ray signatures can be used to detect the difference between radioactive materials that pose a security risk and those that do not.

Why do we use gamma rays?

Gamma-rays have the smallest wavelengths and the most energy of any other wave in the electromagnetic spectrum. These waves are generated by radioactive atoms and in nuclear explosions. Gamma-rays can kill living cells, a fact which medicine uses to its advantage, using gamma-rays to kill cancerous cells.

What telescopes use gamma rays?

The Fermi Gamma-ray Space Telescope, launched in 2008, discovered pulsars that emitted only gamma rays.

Can a gamma-ray burst hit Earth?

A gamma ray burst, the most powerful explosion known in the Universe, may have hit the Earth in the 8th Century. In 2012 researchers found evidence that our planet had been struck by a blast of radiation during the Middle Ages, but there was debate over what kind of cosmic event could have caused this.

What is the strongest thing in the universe?

That's about the same amount of energy in 10 trillion trillion billion megaton bombs! These explosions generate beams of high-energy radiation, called gamma-ray bursts (GRBs), which are considered by astronomers to be the most powerful thing in the universe.

What everyday objects use gamma rays?

He found that bananas, for example, emit gamma rays at 0.17 micrograys—a unit of radioactive energy an object releases, divided by the mass of the object—per hour. Bricks clocked in at 0.15 micrograys per hour, while avocados and the radioactive components of smoke detectors each let out 0.16 per hour.

What devices uses gamma rays?

Gamma rays are used in medicine (radiotherapy), industry (sterilization and disinfection) and the nuclear industry. Shielding against gamma rays is essential because they can cause diseases to skin or blood, eye disorders and cancers.