jan 202013
 
No Galaxy Is An Island, Entire of Itself

  KIPAC scientists use X-ray observations show how galaxies shape their environment, and vice-versa   A major component of our understanding of galaxy evolution that has remained elusive is the influence of the local environment on the galaxy, especially when discussing galaxies in large clusters. Galaxy clusters, the largest gravitationally bound objects in the Universe, [continue reading]

nov 102012
 
Galaxies without Stars...

  The problem of the missing hydrogen in the early Universe   Hydrogen is the most common element in the Universe, making up 75% of all normal matter and the content of stars. Although stars themselves are hot, they can only form out of the coldest gas when a massive cloud of hydrogen can collapse [continue reading]

okt 292012
 
Supermassive Black Hole Inflates Giant Bubble

  Using a brand-new radio telescope, astronomers have produced one of the best images ever made at the lowest frequencies of giant bubbles produced by a supermassive black hole. The observations were performed at frequencies ranging from 20 to 160 MHz which are normally used for communications by airplane pilots. The picture shows what looks [continue reading]

sep 082012
 
New Unified Theory of Dark matter and Dark Energy

  A pair of mathematicians — one from Indiana University and the other from Sichuan University in China — have proposed a unified theory of dark matter and dark energy that alters Einstein’s equations describing the fundamentals of gravity. The Hubble deep field is a picture of the furthest we have ever seen out into [continue reading]

aug 212012
 
The Big Picture of the Universe Confirmed

  We know that stars group together to form galaxies, galaxies clump to make clusters and clusters gather to create structures known as superclusters. At what scale though, if at all, does this Russian doll-like structure stop? Scientists have been debating this very question for decades because clustering on large scales would be in conflict [continue reading]

aug 202012
 
Big Bang Theory Challenged by Big Chill

  The start of the Universe should be modeled not as a Big Bang but more like water freezing into ice, according to a team of theoretical physicists at the University of Melbourne and RMIT University. Ice cracks. Image Credit: katieantarctica They have suggested that by investigating the cracks and crevices common to all crystals [continue reading]