NASA said that while the mystery of the Circinus galaxy’s excess emissions has been solved, there are billions of black holes ...
From a distance, it looks like a serene blue twin of our own world, a dot that could almost pass for Earth in a telescope ...
It looks like a sapphire jewel in space, but HD 189733bis anything but serene. With winds reaching seven times the speed of sound and clouds that pour molten glass sideways, this alien world is one of ...