Pulsars

Not much pressure, to be sure – but it's a finding that's fascinatingly consistent with Stephen Hawking's prediction that black holes emit radiation and therefore not only have a temperature, but slowly shrink over time, in the absence of accretion.

The German scientist was the first person to identify electromagnetic radiation in a wavelength that we today know as an x-ray.

The most common usage of x-rays includes detecting broken or fractured bones, heart problems, breast cancer, scoliosis, and tumors. X-ra...

• Familiar material of the universe contains protons, neutrons and electrons, also known as Baryonic Matter.
• Dark matter is made up of the same plus also non-baryonic matter (neutrinos, free electrons, supersymmetric particles, axions, and black hole...