A Requirement for Life? Our Solar System’s Orbit Through the Milky Way (Weekend Feature)

Milky Way

 

In 1999 astronomers focusing on a star at the center of the Milky Way, measured precisely how long it takes the sun to complete one orbit (a galactic year) of our home galaxy: 226 million years, bobbing our fraught journey through the disc of the Milky Way, drifting through ghostly spiral arms and the darkness of dense nebulae, keeping a constant 30,000 light years between Earth and the violent galactic core. The last time the sun was at that exact spot of its galactic orbit,  Tyrannosaurus rex ruled the Earth.

(more…)

Is Information the Fifth State of Matter in the Universe?

Information Theory

 

“Information,” wrote Arizona State University astrophysicist Paul Davies in an email to The Daily Galaxy, “is a concept that is both abstract and mathematical. It lies at the foundation of both biology and physics. ” 

(more…)

“Indistinguishable from Physics” –Three Extraterrestrial-Technology Conjectures

Alien Tech Spiral

 

Several mind-boggling conjectures about the existence of advanced alien civilizations have been made by astrophysicists who have found that for the last 7 billion years or so something is pushing the galaxies, adding energy to them. Something they are calling “dark energy,” a force that is real, but so far eludes detection. One of the most speculative ideas for the mechanism of an accelerating cosmic expansion is called “quintessence”, a relative of the Higgs field that permeates the cosmos.

(more…)