World Bulletin / News Desk
Astronomers using the Hubble Space Telescope have found seven galaxies that formed relatively shortly after the universe's birth some 13.7 billion years ago, scientists said on Wednesday, describing them "as baby pictures of the universe."
One of the objects may be the oldest galaxy yet found, dating back to a time when the universe was just 380 million years old, a fraction of its current age.
"These early galaxies represent the building blocks of present-day galaxies," John Grunsfeld, NASA's associate administrator for science, told reporters in a conference call.
The discovery of galaxies dating back to the universe's early years should help scientists figure out what happened after the "dark ages," a period of time about 200 million years after the Big Bang explosion when cooling clouds of hydrogen, clumped together by gravity, began to ignite, triggering the first generation of stars.
"It was a very important moment in cosmic history," said astronomer Richard Ellis, with the California Institute of Technology in Pasadena.
Scientists do not know exactly when this "cosmic dawn" occurred and whether it was a single, dramatic event that caused all the galaxies to form their first stars, or whether it happened more gradually over millions of years.
The discovery of seven galaxies spanning a period between 350 million and 600 million years after the Big Bang supports theories that the cosmic dawn was a drawn-out affair, with galaxies slowly building up their stars and chemical elements over time, said Brant Robertson of the University of Arizona in Tucson.
Astronomers plan follow-up studies after Hubble's successor, the James Webb Space Telescope, launches in 2018.
The research appears in the Astrophysical Journal Letters.
The researchers used enzymes to channel the fatty acids along a different biological pathway, so that the bacteria made engine-ready renewable propane instead of cell membranes
Building a new launchpad on its own soil is central to Putin's effort to reform a once-pioneering space industry hobbled by years of budget cuts and a brain drain in the 1990s.
Iceland will be ready to start using magma to generate electricity in 2015.
Lockheed Martin and Electro Optic Systems (EOS) will set up a new tracking station will be based in Western Australia.
Scientists at the Harbin Institute of Technology have discovered a way to allow submerged vessels to travel fast than the speed of sound under water at around 3,600 miles per hour.
Iceland produces almost all the energy it consumes through renewable energy sources, according to Iceland's Energy Authority report.
Information belonging to tens of millions of Sony customers was put at risk by cyber attack on gaming network.
The popular website UFO Blogger compared the find to previous images of a “fossilized, reptilian spine” and a “human finger.”
The two-day fair showcases products like control and surveillance equipment; mine and bomb detectors and aviation security.
Scientists hope to use information about how the organisms fare in the highly radioactive and extreme temperatures of space to devise life-detection techniques for future robotic Mars missions.
The congress will bring together more than 200 of the world's global digital and tech leaders.
Asteroid 1950 DA could hit the Earth on 16 March, 2880.
Anonymous had its account suspended after leaking the name of a police officer accused of shooting dead a black teenager.
Mirzakhani was recognised for her work in understanding the symmetry of curved surfaces, according to the Stanford site.
The cargo includes a European-built electromagnetic levitator, which will be used to suspend and heat metal samples in weightlessness with the goal of improving industrial casting processes
The site, called BrownList (http://www.brownlist.com/), carries the motto "It's payback time."