Latest Abraham (Avi) Loeb Stories

Black Holes Unlikely To Help Explain Dark Matter
2014-01-21 04:38:37

[ Watch the Video: Dark Matter Not Linked To Primordial Black Holes ] redOrbit Staff & Wire Reports - Your Universe Online Dark matter, the mysterious substance that comprises more than 85 percent of the universe, is unlikely to be made of primordial black holes due to the existence of neutron stars, astrophysicists from the University of Lisbon in Portugal and the Harvard-Smithsonian Center for Astrophysics (CfA) claim in a new study. The theory, originally proposed by Stephen...

Mysterious Radio Bursts May Originate From Nearby Flaring Stars
2013-12-13 04:17:34

redOrbit Staff & Wire Reports - Your Universe Online Extremely quick, extremely bright radio pulses known as “fast radio bursts” may originate from flaring stars located within our own galaxy, researchers from the Harvard-Smithsonian Center for Astrophysics (CfA) claim in a new study. Based on their characteristics, scientists had believed that these radio bursts came from galaxies located billions of light-years away. However, the pulses – which typically only last for...

Universe At Peak Observation Period 13 Billion Years Ago
2012-05-23 11:22:26

Lee Rannals for RedOrbit.com Harvard-Smithsonian Center for Astrophysics theorist Avi Loeb says that modern time is not the ideal scenario to study the universe, but rather about 13 billion years ago was. Loeb said that according to his new calculations, just about 500 million years after the Big Bang proves to be the best-case scenario when studying our cosmos.  He says that the farther you go into the future, the more information you lose, making our time period better than those...

Alien Hunters Should Look For 'City Lights'
2011-11-04 03:42:51

In the search for extraterrestrial intelligence, astronomers have hunted for radio signals and ultra-short laser pulses. In a new paper, Avi Loeb (Harvard-Smithsonian Center for Astrophysics) and Edwin Turner (Princeton University) suggest a new technique for finding aliens: look for their city lights. "Looking for alien cities would be a long shot, but wouldn't require extra resources. And if we succeed, it would change our perception of our place in the universe," said Loeb. As with...

2009-04-29 10:20:00

It sounds like the plot of a sci-fi movie: rogue black holes roaming our galaxy, threatening to swallow anything that gets too close. In fact, new calculations by Ryan O'Leary and Avi Loeb (Harvard-Smithsonian Center for Astrophysics) suggest that hundreds of massive black holes, left over from the galaxy-building days of the early universe, may wander the Milky Way. Good news, however: Earth is safe. The closest rogue black hole should reside thousands of light-years away. Astronomers are...

2007-05-23 15:55:00

Cambridge, MA -- Astronomers are hunting an elusive target: rogue black holes that have been ejected from the centers of their home galaxies. Some doubted that the quarry could be spotted, since a black hole must be gobbling matter from an accretion disk in order for that matter to shine. And if a black hole is ripped from the core of its home galaxy and sent hurling into the outskirts, the thinking goes, then its accretion disk might be left behind. New calculations by theorist Avi Loeb...

2007-01-08 13:15:00

Seattle, WA - Astronomers have proposed an improved method of searching for intelligent extraterrestrial life using instruments like one now under construction in Australia. The Low Frequency Demonstrator (LFD) of the Mileura Wide-Field Array (MWA), a facility for radio astronomy, theoretically could detect Earth-like civilizations around any of the 1,000 nearest stars. "Soon, we may be eavesdropping on signals from Galactic civilizations," says theorist Avi Loeb of the Harvard-Smithsonian...

2005-11-02 17:35:00

MILWAUKEE, Wisconsin (AP) -- Researchers from NASA's Goddard Space Flight Center in Maryland believe they have captured traces of radiation from long-extinguished stars that were "born" during the universe's infancy. The research represents the first tangible -- but not conclusive evidence of these earliest stars, which are thought to have produced the raw materials from which future stars, including our sun, were created. The Big Bang, the explosion believed to have created the universe, is...

2005-10-03 12:55:00

Cambridge, MA -- Common wisdom holds that we can never see a black hole because nothing can escape it - not even light. Fortunately, black holes aren't completely black. As gas is pulled into a black hole by its strong gravitational force, the gas heats up and radiates. That radiation can be used to illuminate the black hole and paint its profile. Within a few years, astronomers believe they will be able to peer close to the horizon of the black hole at the center of the Milky Way. Already,...

2005-09-22 14:50:00

Cambridge, MA -- What did the very first stars look like? How did they live and die? Astronomers have ideas, but no proof. The first stars are so distant and formed so long ago that they are invisible to our best telescopes. Until they explode. Hypernovas (more powerful cousins of supernovas) and their associated gamma-ray bursts offer astronomers the possibility of detecting light from the first generations of stars. NASA's Swift satellite already has seen a gamma-ray burst (GRB) with a...

Word of the Day
  • In music, a work for a keyboard-instrument, like the pianoforte or organ, originally intended to utilize and display varieties of touch: but the term has been extended so as to include many irregular works, similar to the prelude, the fantasia, and the improvisation.
This word is Italian in origin, coming from the feminine past participle of 'toccare,' to touch.