The sun on Wednesday unleashed one of the largest solar flares on record, and further activity could disrupt communications links and electrical power grids.
The National Oceanic and Atmospheric Agency, or NOAA, said the powerful flare that emerged from region 808 on the sun Wednesday afternoon rated the fourth-largest in the last 15 years. Intense radio emissions were associated with the flare. It rated an R-4, or severe, on NOAA's space weather scale for radio blackouts.
The brain, the most important organ of human, is still under way of evolution, scientists reported on Thursday.
Russia, Europe, and Japan may jointly develop a crewed spacecraft called Kliper to ferry as many as six astronauts to and from the International Space Station. The spacecraft could launch as early as 2010 - just as NASA retires its space shuttles.
The three space agencies are in discussions to develop the craft, which is intended as a replacement for Russia's Soyuz spacecraft. Soyuz has been the workhorse of Russia's human spaceflight programme, but is based on 40-year-old technology.
A Dutch graduate student has unearthed a key original manuscript written by famed physicist Albert Einstein.
A team of researchers from the Ecole Polytechnique Fédérale de Lausanne (EPFL) has successfully demonstrated, for the first time, that it is possible to control the speed of light – both slowing it down and speeding it up – in an optical fiber, using off-the-shelf instrumentation in normal environmental conditions. Their results, to be published in the August 22 issue of Applied Physics Letters, could have implications that range from optical computing to the fiber-optic telecommunications industry.