Latest STEREO Stories

2010-12-01 14:19:55

On December 2, 1995, the Solar and Heliospheric Observatory or SOHO was launched into space from Cape Canaveral aboard an Atlas IIAS rocket. The joint ESA/NASA project began its work observing the sun at a time when the term "solar weather" was almost never used. Fifteen years later, SOHO has revolutionized what we know about the solar atmosphere and violent solar storms produced by the sun. SOHO has become an expert comet-hunter, nightly news leader and a workhorse that helped create the...

2010-11-08 08:50:00

News from the 52nd annual meeting of the APS Division of Plasma Physics The Sun sporadically expels trillions of tons of million-degree hydrogen gas in explosions called coronal mass ejections (CMEs). Such clouds are enormous in size (spanning millions of miles) and are made up of magnetized plasma gases, so hot that hydrogen atoms are ionized. CMEs are rapidly accelerated by magnetic forces to speeds of hundreds of kilometers per second to upwards of 2,000 kilometers per second in several...

2010-09-30 06:50:00

NASA has chosen the Naval Research Laboratory's Wide-field Imager to be part of the Solar Probe Plus mission slated for launch no later than 2018. The Solar Probe Plus, a small car-sized spacecraft will plunge directly into the sun's atmosphere approximately four million miles from our star's surface. It will explore a region no other spacecraft ever has encountered in an effort to unlock the sun's biggest mysteries. For decades, scientists have known that the corona, or the outer...

2010-09-23 07:45:00

Scientists from Boston University's Center for Space Physics reported today that NASA satellites designed to view the escaping atmosphere of the Sun have also recorded evidence of gas escaping from the planet Mercury. The scientists reported these findings at the European Planetary Science Congress (EPSC) meeting in Rome, Italy this week. The STEREO mission has two spacecraft, in orbits just inside and outside the earth's orbit around the Sun, and thus increasingly ahead and behind the earth...

2010-09-22 09:35:00

Solar storms don't always travel in a straight line. But once they start heading in our direction, they can accelerate rapidly, gathering steam for a harder hit on Earth's magnetic field. So say researchers who have been using data from NASA's twin STEREO spacecraft to unravel the 3D structure of solar storms. Their findings were presented in the Sept. 21 issue of Nature Communications. "This really surprised us," says co-author Peter Gallagher of Trinity College in Dublin, Ireland. "Solar...

2010-07-14 12:20:00

Scientists now say that a massive eruption from the sun in April might have caused the Galaxy 15 satellite to become a "zombie." According to the U.S. Naval Research Laboratory (NRL), the explosion of plasma and magnetic energy occurred on April 3 and was observed by NASA's sun-watching STEREO spacecraft.  The NRL released new images of the solar storm last week. NRL officials said that the storm appears to have disabled Intelsat's Galaxy 15 communications satellite.  The zombie...

2010-06-05 07:10:00

Earth and space are about to come into contact in a way that's new to human history. To make preparations, authorities in Washington DC are holding a meeting: The Space Weather Enterprise Forum at the National Press Club on June 8th. Richard Fisher, head of NASA's Heliophysics Division, explains what it's all about: "The sun is waking up from a deep slumber, and in the next few years we expect to see much higher levels of solar activity. At the same time, our technological society has...

2010-05-26 10:00:00

PALO ALTO, Calif., May 26 /PRNewswire/ -- The immense volume of data generated by the suite of instruments on NASA's Solar Dynamics Observatory (SDO) requires new tools for efficient identifying and accessing data that is most relevant to research investigations. Scientists at the Solar and Astrophysics Laboratory of the Lockheed Martin (NYSE: LMT) Advanced Technology Center (ATC) in Palo Alto have developed the Heliophysics Events Knowledgebase (HEK) to fill this need. The HEK system...

2010-05-25 07:10:00

Solar physicists at the University of California, Berkeley, have captured for the first time the collision of a comet with the sun. Using instruments aboard NASA's twin STEREO spacecraft, four post-doctoral fellows at UC Berkeley's Space Sciences Laboratory were able to track the comet as it approached the sun and estimate an approximate time and place of impact. STEREO (Solar TErrestrial RElations Observatory), launched in 2006, consists of identical spacecraft orbiting the sun, one ahead of...

2010-05-11 09:15:00

SSTL has today announced that it will launch the NigeriaSat-2 and NigeriaSat-X satellites on behalf of the National Space Research and Development Agency (NASRDA) by a Dnepr launch vehicle from Yasny, Russia on October 29th, 2010. NigeriaSat-2 is the most advanced small satellite ever to be launched, defining new standards in Earth observation and avionics. The spacecraft, which is based upon SSTL's flagship SSTL-300i platform, will be used primarily for resource management and mapping of the...

Word of the Day
  • The prevailing range of a vocal or instrumental part, within which most of the tones lie.
This word is Italian in origin and comes from the Latin 'textura,' web, structure.