Astronomers have captured the first
footage of a solar "tsunami" hurtling through the Sun's atmosphere at over a
million kilometres per hour.
Details were reported at the UK National
Astronomy Meeting in Belfast.
In half an hour, we saw the tsunami cover
almost the full disc of the Sun
In a solar tsunami, a huge explosion near the Sun, such as a coronal mass
ejection or flare, causes a pressure pulse to propagate outwards in a circular
pattern. [...]for about 35 minutes, reaching peak speeds about 20 minutes after
the initial blast.
[...]"The energy released in these explosions is phenomenal;
about two billion times the annual world energy consumption in just a fraction
of a second.
"In half an hour, we saw the tsunami cover almost the full disc of the Sun,
nearly a million kilometres away from the epicentre."
Photos and excerpts from original article.