Away Out There

Cause and Effect

CAUSE AND EFFECT: When the sun spit out a Coronal Mass Ejection (CME) on Oct. 5, a brilliant aurora appeared three days later over Saskatoon, Saskatchewan, Canada. When Earth-directed, CMEs can affect electronic systems in satellites and on Earth.

Oldest Recorded Supernova: Last Remnants of Chinese ‘Guest Star’ of 185 A.D.

A truly cool image, combined from data from four different space telescopes, shows all that remains of the oldest documented example of supernova RCW 86, which the Chinese documented in 185 A.D. as a mysterious "guest star" in the night sky. Take a look.

‘Cry’ of a Shredded Star Heralds a New Era for Testing Relativity

'This gives us an opportunity to explore the nature of black holes and test Einstein's relativity at a time when the universe was very different than it is today,' Last year, astronomers discovered a quiescent black hole in a distant galaxy that erupted after shredding and…