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The Invisible Galaxy

A new form of diffuse galaxy has been discovered inside the Coma Cluster. This place is made 99.99% of dark matter, totally invisible as it doesn’t interact with light.

The galaxy is known as Dragonfly 44 and was discovered by astronomers Pieter van Dokkum and his colleagues.

The way star systems orbit around the center of a galaxy is inexplicable with “normal” physics. To account for the velocity variations and patterns we need to add a new ingredient to the gravitational pot: dark matter.

Dragonfly 44 in particular has so few stars that were the dark matter to be taken away, the galaxy would fly apart the same way you’d go flying if the cord holding the swing to a swing set were severed.

(Image credit: NASA, JPL-CalTech and L. Jenkins) 

Helix nebula

KENNY: THE INBRED TIGER WITH “DOWN SYNDROME”

Pictures have been circulating the internet about a white tiger with down syndrome. Kenny’s diagnosis of down syndrome is questionable. But what is sure is that he was a victim of inbreeding. White tigers are rare and to ensure that the offspring would be a white tiger, Kenny’s parents were brother and sister. A lot of his siblings were stillborns or died very young.

But despite all this, breeders kept trying to mate Kenny’s parents. When parents are very closely related, there is a higher chance of both parents carrying the same “bad” gene. So there is a greater risk for their child to have a dominant bad gene. 

Kenny lived to be 10 years old. Kenny was described as non-aggressive and very friendly. 

SOURCE & SOURCE

I’m not afraid anymore

Extremely deep picture #PrayForPeace

Y entonces…