x-ray astronomy

noun

1. the branch of astronomy that studies celestial objects by means of the x-rays emitted by them.

X-ray astronomy

noun

1. the branch of astronomy concerned with the detection and measurement of X-rays emitted by certain celestial bodies. As X-rays are absorbed by the atmosphere, satellites and rockets are used

x-ray astronomy

1. The study of celestial objects by measurement of the x-rays they emit. Because the Earth's atmosphere absorbs x-rays, x-ray detectors are usually carried into space on satellites. X-rays are emitted by high-energy objects such as active galactic nuclei, supernova remnants, x-ray binary stars, neutron stars, and the regions around black holes. Objects which do not produce their own x-rays can reflect radiation from nearby stars, making it possible to study the objects using x-ray astronomy; one notable example of this is the analysis of solar x-rays reflected by the Moon.

Other Words From

• x-ray astronomer noun

Word History and Origins

Origin of x-ray astronomy¹

First recorded in 1960–65