Strange nebula changes colour rhythmically like a mood lamp

A cloud of mud and fuel in house, known as a nebula, appears to be altering color and brightness in a rhythmic means each 4 years, like a galactic temper lamp.

The VISTA telescope within the Atacama desert in Chile can survey giant tracts of the Milky Technique to search for extraordinarily uncommon occasions in our galactic neighbourhood, equivalent to supernova explosions, the latest of which …