Death spiral: A black hole spins on its side

Researchers from the University of Turku, Finland, found that the axis of rotation of a black hole in a binary system is tilted more than 40 degrees relative to the axis of stellar orbit. The finding challenges current theoretical ...

Even dying stars can still give birth to planets

Planets are usually not much older than the stars around which they revolve. Take the sun: It was born 4.6 billion years ago, and not long after that, Earth developed. But KU Leuven astronomers have discovered that a completely ...

The gamma-ray binary HESS J0632+057

Gamma rays are the most energetic known form of electromagnetic radiation, with each gamma-ray being at least one hundred thousand times more energetic than an optical light photon. Very high energy (VHE) gamma rays pack ...

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