Aztec origin of Elizabethan spirit mirror confirmed

New research has confirmed that an obsidian mirror used by John Dee, confidante to Queen Elizabeth I, to contact otherworldly spirits in his occult practices has Aztec origins.

How did supermassive black holes grow so fast?

Black holes in the early universe pose a bit of a problem. Based on observations from telescopes on Earth and in space, we know that some black holes grew to be a billion times the mass of the sun just one billion years after ...

SLAC invention could make particle accelerators 10 times smaller

Particle accelerators generate high-energy beams of electrons, protons and ions for a wide range of applications, including particle colliders that shed light on nature's subatomic components, X-ray lasers that film atoms ...

Assessing the habitability of planets around old red dwarfs

A new study using data from NASA's Chandra X-ray Observatory and Hubble Space Telescope gives new insight into an important question: how habitable are planets that orbit the most common type of stars in the Galaxy? The target ...

page 14 from 40