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.
Scorpius is one of the real highlights of the summer sky. Unfortunately, you can only see the entire constellation during the months of July, August and September. The head of Scorpio starts to peek above the southern horizon in June, and, after September, you will just see its tail as it dips below our horizon until the following summer.