NASA: NO2 pollution on planets would be sign of alien civilizations
Discovery of pulsars British astronomer Dame Jocelyn Bell Burnell was the first person to discover a pulsar in 1967 when she spotted a radio pulsar. Since then other types of pulsars that emit x-rays and gamma rays have also been spotted. Pulsars are essentially rotating, highly magnatised neutron stars but when they were first discovered … Read more