Astronomy Picture Of The Day:Echo of a dead star: what the Brain Nebula looks like 🧠

 

#NASA, #Space, #astronomy, #διάστημα

Βlack Hole

LBN 576, located in the constellation Cassiopeia, is a gas bubble left behind by a supernova explosion approximately 10,000 years ago. Due to its extremely low brightness, this cosmic object long remained invisible to amateur telescopes; capturing a detailed image required a record-breaking 66 hours of exposure time.