Go outside on the next clear night and look to the north and you'll see the famous W-shaped constellation of Cassiopeia. Once you’ve seen its five bright stars in a familiar shape you’ll never be able ...

The Bubble Nebula (also designated NGC 7635) is a faint emission nebula in the constellation Cassiopeia the Queen near its border with Cepheus. It rides high in the sky at this time of year. You can ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London. Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and ...

The brightest stars embedded in nebulae throughout our galaxy pour out a torrent of radiation that eats into vast clouds of hydrogen gas – the raw material for building new stars. This etching process ...

The Soul Nebula, catalogued as IC 1848 and Westerhout 5, is a sprawling emission nebula lying very close in the sky to another mammoth star forming region, its neighbor IC 1805, the Heart Nebula. Both ...

In this composite photo of supernova remnant Cassiopeia A, created by meshing x-ray images from the Chandra Observatory, visible images from the Hubble Telescope and infrared images from the James ...