The Big Picture: The History of the Universe Is Our History
The Big Picture: The History of the Universe Is Our History
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First Images of Particle Jets at Edge of a Supermassive Black Hole
Supermassive black holes appear to occupy the center of almost all galaxies. When they are actively swallowing matter, these black holes can power energetic jets that shine brighter than the entire rest of the galaxy, and can shoot matter free of it. Despite the mass and energy involved, however, the origin of these jets has…
World’s Oldest Weapons Discovered
Archaeologists have discovered eight extremely well-preserved spears that are an astonishing 300,000 years old, making them the oldest known weapons ever found. They probably belonged to members of the species homo heidelbergensis, although no human remains have yet been found at the site. Homo heidelbergensis lived throughout the Old World between 600,000 and 300,000 years…
Dogs Learn Language Differently Than Humans
While many dog-owners may marvel at their pet’s human-like ability to understand new words; research by scientists at the University of Lincoln, UK, suggests that dogs learn words in a fundamentally different way to us. Dogs have long been thought to learn new words in a similar way to humans; using an object’s shape such…
Earth Has a Couple of ‘Near’ Misses
Over the past couple of days, two asteroids ‘2012 XE54’ and ‘4179 Toutatis’ passed close to Earth. 4179 Toutatis, a lumpy shaped asteroid which is roughly 3 miles long, is classified as a potentially hazardous object (PHO) by astronomers and has passed closed to Earth several times before, in 1992, 1996, 2000, 2004 and 2008….
Seeing An Ancient NY Forest Through Tree Fossils
Fossil hunters investigating the floor of a 385 million-year-old forest in an excavated upstate New York quarry found evidence of a complex ecosystem teeming with plant life. The journal Nature reported that excavation of the quarry in 2010 allowed researchers to study an intact portion of the forest floor complete with root systems. William Stein,…
Cosmic Optimism: From the Principle of Maximum Diversity to Path Optimization
ByEditorBefore we turn to the Principle of Maximum Diversity, we review the development of the Principle of Least Action (or Effort), one of the mainstays of modern physics.