Enigmatic Structures Spotted on the Sun in 1999 Finally Explained by Science
What are supra-arcade downflows? Supra-arcade downflows (SAD) were first observed on the Sun in 1999 by the Yohkoh spacecraft. They…
What are supra-arcade downflows? Supra-arcade downflows (SAD) were first observed on the Sun in 1999 by the Yohkoh spacecraft. They…
Ground-based and space telescopes recorded possibly the largest surge in solar activity in recent years – within two days, the…