Toxic air pollutants are poisonous substances in the air that come from natural sources (for example, radon gas coming up from the ground) or from manmade sources (for example, chemical compounds given off by factory smokestacks) and can harm the environment or your health.
Subsequently, Scorpius X-1 was discovered in 1962 by a team, under Riccardo Giacconi, who launched an Aerobee 150 sounding rocket carrying a highly sensitive soft X-ray detector designed by Frank Paolini.
The constellation Scorpius. From the Northern Hemisphere, it is highest up in the evening on hot summer nights of July and August. Notice the two stars at the tip of the Scorpion's Tail. They are Shaula and Lesath, also known as The Stinger.