This definition appears very rarely
and is found in the following Acronym Finder categories:
- Science, medicine, engineering, etc.
See other meanings of GRA
We have 130 other definitions for GRA
in our Acronym Attic
Samples in periodicals archive:
The Very Energetic Radiation Imaging Telescope Array System is a ground-based observatory for gamma-ray astronomy located at the Fred Lawrence Whipple Observatory.
Research Area and Interest: Experimental High Energy Astrophysics, Cosmic Antimatter, High Energy Gamma-Ray Astronomy, Experimental Techniques in Particle Physics.
Gamma-ray astronomy got a big boost in 1991 with the launch of the NASA's now-defunct Compton Gamma Ray Observatory (CGRO).
Piro and Harrison presented their teams' findings April 4 at a meeting on gamma-ray astronomy in Baltimore.
Beginning in the 1970s, gamma-ray astronomy launched a comeback.
In 1962 radioastronomy had already developed alongside optical astronomy, but X-ray astronomy hardly existed, and such exotica as gamma-ray astronomy and neutrino astronomy were hopes or promises rather than science.