4 Jan 2012 at 12:00am
Some people have noticed a strange triangular or diamond-shape "object" entering the field-of-view of the HI2 telescope on STEREO Behind around December 26, 2011. You can see the feature in question in this movie moving from right-to-left, just above the trapezoidal occulter on the right side of the image, and more clearly in this close-up movie.
What is this?
Read more...
4 Nov 2011 at 12:00am
The two STEREO spacecraft now sit on opposite sides of the sun providing
a view of the latest solar activity for the entire solar system.
Read more...
25 Oct 2011 at 12:00am
On October 25, 2006 a Delta II rocket launched from Cape Canaveral carrying two nearly identical spacecraft. Each satellite was one half of a mission entitled Solar TErrestrial RElations Observatory (STEREO) and they were destined to do something never done before - see the entire sun simultaneously.
Read more...
18 Aug 2011 at 12:00am
For the first time, a spacecraft far from Earth has turned and watched a solar storm engulf our planet. The movie, released today during a NASA press conference, has galvanized solar physicists, who say it could lead to important advances in space weather forecasting.
Read more...
21 Apr 2011 at 12:00am
Combined data from the STEREO and ACE spacecraft are being used to study the structure of a CME in unprecedented detail, showing considerable evolution in the CME's internal structure as it moves from the Sun to Earth.
Read more...
19 Apr 2011 at 12:00am
Researchers have discovered 122 new eclipsing binary stars and observed hundreds more variable stars in an innovative survey using NASA's two STEREO solar satellites.
Read more...
6 Feb 2011 at 12:00am
On February 6, 2011, NASA released the
first ever images of the entire Sun,
using a combination of STEREO images together with data from the Solar Dynamics
Observatory. This never before seen view was made possible by STEREO's
unique viewing
geometry.
Read more...
2 Feb 2011 at 12:00am
For the past 4 years, the two STEREO spacecraft have been moving away from the
Earth and gaining a more complete picture of the sun. On February 6, 2011, NASA
will reveal the first ever images of the entire sun and discuss the importance
of seeing all of our dynamic star.
Read more...
10 Dec 2010 at 12:00am
For the first time scientists have used data analysed by the public to make a real-time prediction of a solar storm that should reach Earth on Monday 13 December, thanks to the Solar Stormwatch web project.
The initiative, launched in February by the Royal Observatory, Greenwich (ROG), in partnership with the STFC Rutherford Appleton Laboratory and the Zooniverse citizen science project, makes it possible for anyone with an internet connection to get involved in the latest solar research by helping to spot and track storms as they erupt from the surface of the Sun. These collective measurements enable scientists to forecast the arrival of storms far enough in advance to issue effective pre-emptive warnings for the first time.
The Sun is much more dynamic than it appears to the naked eye. Intense magnetic fields churn and pummel the SunÕs atmosphere and they store enormous amounts of energy that, when released, can hurl billions of tons of material out into space in eruptions called Coronal Mass Ejections (CMEs) Š or solar storms.
The latest storm identified by the project is predicted to hit Earth at 07.32 GMT on 13 December. Solar storms have the potential to interfere with communication satellites, upset GPS navigation systems and also pose a health risk to astronauts on the International Space Station. In severe cases they can even knock out entire power grids causing widespread disruption here on Earth. On a gentler note, the particles making up a solar storm can produce beautiful displays of the Northern and Southern Lights as they collide with the Earth's upper atmosphere. Scientists are not overly concerned about the effects of the current storm, but the early warning provided by Solar Stormwatch will allow precautionary measures to be put in place.
read the rest
Read more...
1 Oct 2010 at 12:00am
Illustration of the positions of the two STEREO spacecraft show that they attain 180 degrees of separation in Feb. 2011, thus allowing the world to see the entire Sun for the first time.
Read more...
US $34.99
