The detection of ionized oxygen indicates that many very brilliant stars, several dozen times more massive than the Sun, have formed in the galaxy and are emitting the intense ultraviolet light needed to ionize the oxygen atoms

The LIGO Scientific Collaboration and the Virgo Collaboration identify a second gravitational wave event

Led by Lehigh University professor Joshua Pepper, the team includes nearly 40 members in 10 countries across 4 continents

In Western Europe, only a few small areas remain where the night sky remains relatively unpolluted, including areas in Scotland, Sweden, Norway, and parts of Spain and Austria

From a distance, these carbon planets would be difficult to tell apart from more Earth-like worlds. Their masses and physical sizes would be similar

The research shows that more oxygen, carbon, and iron atoms exist in the sprawling, gaseous halos outside of galaxies than exist within the galaxies themselves, leaving the galaxies deprived of raw materials needed to build stars and planets.

"Our simulations are only a first step toward truly realistic 3D simulations of supernova."

There are a few possible explanations for the universe's excessive speed. One possibility is that dark energy, already known to be accelerating the universe, may be shoving galaxies away from each other with even greater—or growing—strength

This unusual phenomenon, predicted by the theory of General Relativity, was discovered by chance by a doctoral student at the Instituto de Astrofísica de Canarias while analysing images of the Sculptor dwarf galaxy

"It is difficult to imagine Californian beaches on ancient Mars, but try to picture the Great Lakes on a particularly cold and long winter."