High-speed eruptions of charged particles from the sun may be to blame for recent failures of satellites that people rely on to watch TV and use the Internet, scientists say.
From 93 million miles (150 million kilometers) away, the sun spawns solar flares, coronal mass ejections and other space weather events, which can send highly energized particles racing toward Earth. Some solar storms have been known to disrupt communications systems and damage satellites.
To better understand these disturbances, a team of MIT researchers investigated the space weather conditions at the time of 26 failures in eight geostationary satellites operated by the London-based company Inmarsat. Geostationary satellites orbit at the same rate as the Earth’s rotation, meaning they always hover above the same location on the planet.
Most of the glitches, from 1996 to 2012, coincided with high-energy electron activity during declining phases of the solar cycle, the study found.
The researchers think these charged particles may have accumulated in the satellites over time. Despite protective shielding, the buildup likely caused internal charging that damaged the satellites’ amplifiers, which are needed to strengthen and relay a signal back to Earth. Over an extended mission, the researchers warn that this phenomenon could also cause the satellites’ backup amplifiers to fail.
Pro-Israel bias: BBC admits editorial breach in interview with Israeli defense chief 2015-05-23 7:58
The BBC has reached a â€śprovisional findingâ€ť to uphold complaints made by Palestinian activists that the broadcaster breached its editorial guidelines in a â€śsoftâ€ť interview with the Israeli defense minister.
Complaints focused on BBC journalist Sarah Montagueâ€™s alleged failure to challenge controversial claims made by Israeli Defense Minister Moshe Yaâ€™alon.
Journalist Amena Saleem, who works with the Palestine Solidarity Campaign (PSC), wrote ...
41% of Americans Support Criminalizing "Hate Speech" 2015-05-23 7:31 The following are from a recent poll about what some are calling on for "hate speech"
1. Support for Hate Crimes Legislation
Do you support or oppose the federal law that requires increased penalties for hate crimes committed on the basis of the actual or perceived race, color, religion, national origin, ethnicity, or gender of any person?
2. Support for Expanding Hate Crimes
FBI Admits No Major Cases Cracked with Patriot Act Snooping Powers 2015-05-23 7:36
FBI agents canâ€™t point to any major terrorism cases theyâ€™ve cracked thanks to the key snooping powers in the Patriot Act, the Justice Departmentâ€™s inspector general said in a report Thursday that could complicate efforts to keep key parts of the law operating.
Inspector General Michael E. Horowitz said that between 2004 and 2009, the FBI tripled its use of bulk ...
Sweetener Stevia Was Once Hailed As An Anti-Fertility Agent for Population Reduction 2015-05-23 7:13
Maybe it's not so sweet now... If you've thought stevia, the natural alternative to sugar and artificial sweetners with aspartame, et al., is too good to be true, there may be a catch. Check out this textbook written in 1970 by Paul and Anne Ehrlich, the precursor to the textbook Ecoscience they wrote with Obama Science Czar John P. Holdren ...
TPP Aproved: Senate Republicans Give Obama New Powers - Details Remain 'Classified' 2015-05-23 6:43
President Obama won a big victory for his trade agenda Friday with the Senateâ€™s approval of fast-track legislation that could make it easier for him to complete a wide-ranging trade deal that would include 11 Pacific Rim nations.
A coalition of 48 Senate Republicans and 14 Democrats voted for Trade Promotion Authority late Friday, sending the legislation to a difficult fight ...