The first of four satellites that make up ESA's Cluster mission is coming safely back down to Earth, marking a brilliant end to this remarkable mission. The satellite's orbit was tweaked back in ...

European astronomers state that 2XMM J083026+524133 has been located about 7.7 billion light-years from our solar system. They contend that its existence can only be explained through dark energy. The ...

“Weather” in clusters of galaxies may explain a longstanding puzzle, according to a team of researchers at the University of Cambridge. The scientists used sophisticated simulations to show how ...