Because radiation at those wavelengths is absorbed in the atmosphere, and very little of it
ever reaches the ground. Operated on the ground, those telescopes would see almost nothing.
The earth's atmosphere doesn't let these rays reach the ground, so the telescopes are placed in orbit where they can receive the rays.
The correct order is c) Alpha particle, beta particle, gamma ray. Alpha particles have the greatest mass, followed by beta particles, and then gamma rays which have no mass.
Gamma, X-ray, Optical, and Radio
Seth Digel has written: 'GLAST' -- subject(s): Gamma ray bursts, Space mission, Gamma ray telescopes, Imaging techniques, Gamma ray observatory
they use radio telescopes, infrared, gamma ray, and etc.
No, it is also observed in case of UV, Xray, Gamma ray.
No, x-rays and gamma rays cannot be focused by lenses or conventional telescope mirrors. To make mirrors that will focus x-rays or gamma rays you need very shallow glancing angle mirrors, that are nearly just parabolically tapered tubes. Typically several of these tubes with the same focal point but different diameter are nested inside each other.
Stefan Vasile has written: 'Studies of Avalanche Photodiodes (APDs) as readout devices for scintillating fibers for high energy gamma-ray astronomy telescopes' -- subject(s): Charged particles, Gamma rays, Space exploration, Low noise, Satellite-borne instruments, Scintillating fibers, Gamma ray telescopes, Avalanche diodes
Richard Lee Balthazor has written: 'Detectors for imaging Gamma-ray telescopes'
they did it to get more detailed pictures of space
Scintillation detectors, semiconductor detectors, and Geiger-Muller tubes are commonly used to detect gamma rays. These detectors work by measuring the ionizing radiation produced when gamma rays interact with matter.
Donald C. Wold has written: '[A NASA/University Joint Venture in Space Science]' -- subject(s): Cosmic ray showers, Density distribution, Diffuse radiation, Gamma ray observatory, Gamma ray telescopes, Radiation detectors