Portal:Radiation astronomy/X-ray astronomy article/26

Taurus XR-1 was discovered on April 29, 1963 at J1950 Right ascension (RA) 05:31.5:0 Declination (Dec) +22°. An Aerobee sounding rocket carried a proportional counter fabricated by a team from the US Naval Research Laboratory. This experiment was the first to detect X-rays from the Crab Nebula supernova remnant (SNR).

SN 1054 is the supernova that produced the Crab Nebula. Because of its steady production of X-rays, the Crab X-ray source is often used as an X-ray emission standard.