As the CME travels out into space, the tsunami travels across the Sun at speeds of up to 1000 kilometers
The shape of solar tsunamis is changed by the environment through which they move. Just as sound travels faster
in water than in air, solar tsunamis have a higher speed in regions of stronger magnetic field.
This unique feature allowed the team, led by researchers from UCL's Mullard Space Science Laboratory, to measure
the Sun's magnetic field.
"We've demonstrated that the Sun's atmosphere has a magnetic field about ten times weaker than a normal fridge magnet,"
Dr David Long, UCL Mullard Space Science Laboratory, and lead author of the research, said.
The unique orbit of STEREO's twin spacecraft allowed scientists to confirm the existence of solar tsunamis. Credit: NASA
Using data obtained using the Extreme ultraviolet Imaging Spectrometer
(EIS), a UK-led instrument on the Japanese Hinode spacecraft, the team measured the density of the solar atmosphere
through which the tsunami was travelling.
"These are rare observations of a spectacular event that reveal some really interesting details about our nearest
star," Dr Long noted said.
Scientists have to continuously observe and examine the Sun's violent activity and its atmosphere.
The Sun's magnetic field is difficult to measure directly and usually scientists have only computer simulations to rely on.
The explosions that produce solar tsunamis can send CMEs hurtling towards the Earth. Although protected by its
own magnetic field, the Earth is vulnerable to these solar storms as they can adversely affect satellites and
"As our dependency on technology increases, understanding how these eruptions occur and travel will greatly
assist in protecting against solar activity," Dr Long said.
Millennia Old Astronomical Secret Revealed
In 1943, an ancient papyrus was bought by the Cairo museum.
It was written in Hieratic and although portions of it were eaten away by ants, it was a very precious ancient document.
The papyrus contained three separate books dealing with astronomy. One of the books was the Cairo Calendar, and now it reveals an ancient astronomical secret...
Next Magnetic Pole Reversal Is Underway - Scientists Say
A new study indicates that there is a possible connection between the Earth's inner core and a magnetic reversal.
The magnetic field reverses direction every few thousand years. If it happened now, we would be exposed to solar winds capable of knocking
out global communications and power grids...
Watching Volcanoes On Alien Worlds
Volcanoes display the awesome power of nature like few other events.
Now that astronomers are finding rocky worlds
orbiting distant stars, they're asking the next logical questions: Do any of those worlds have volcanoes? And if so, could we detect them?
Aliens Living On Methane Worlds
In the search for life elsewhere, many studies focus on finding liquid water. But what if life could exist with some other
solvent? Saturn's smoggy moon Titan makes scientists question the possibilities for methane-based life in the galaxy.
The search for life is largely limited to the search for water – we look for exoplanets at the correct distance from their
stars for liquid water to splash and flow freely on their surfaces...
Record-Breaking Radio Waves From Ultra-Cool Brown Dwarf
Flaring radio emissions from an ultra-cool star, not much warmer than the planet Jupiter, have been discovered by Penn State astronomers
using the world's largest radio telescope, at Arecibo, Puerto Rico.
This is by far the coolest brown dwarf yet detected at radio frequencies...
Light From Distant Alien World Seen For The First Time
It's the most alien world we can only imagine and for the first time a space-based infrared telescope - Spitzer Space Telescope -
has detected light emanating from a "super-Earth" located in this system and orbiting a bright star, known as 55 Cancri, in a mere 18 hours.
First Photo Ever Of The Entire North Pole As Seen From Space!
You have never seen the entire North Pole, not until now...
This is a unique photo showing for the first time the entire Artic region.
We have previously only been able to view parts of the North Pole, but in this very special version of
the Blue Marble image much more can be seen... Can you see your country on the image?
Can Parallel Universes Explain The Déjà Vu Phenomenon?
Have you ever had a déjà vu experience? It's the feeling, or impression that you have already witnessed or experienced a current situation.
The term déjà vu is French and means, literally, "already seen."
It is a rather common, yet little understood phenomenon...
Stunning Satellite Photos Show America As Never Seen Before!
Incredible new satellite photos show America as you have never seen it before!
These stunning images reveal what the country looks like from the skies.
You can clearly see how the nation's transport and communication infrastructures work to power the vast nation on a daily basis.
Beautiful Star Trails Over Australian Night Sky!
These extraordinary images are an example of beautiful star trail photography!
The sky is as just gorgeous as the landscape. The colors of the star trails are almost out of this world!
Can it really get much better that this?