Fluid model
200km/s1400+
Illustrative fluid model of this site's own inputs, not a NOAA product. How it works
—
span
How much matter is passing through space?
Waiting for a solar-wind reading.
Even here, space is extraordinarily sparse.
A sudden density rise can signal compressed solar wind.
The reading is an average: the number of protons in any individual cube fluctuates. Dots are rounded to the nearest whole proton and their sizes are greatly exaggerated. Above 200 protons/cm³, each dot represents multiple protons, as shown in the key.
Electrons are not drawn. The cube and the Sun–Earth spacing are illustrative; particle motion is slowed down so you can follow it.
A live, interactive map of coronal mass ejections — the solar storms that travel from the Sun to Earth. It plots every CME NASA tracks, estimates whether and when each will reach us, and shows the impact on Earth.
Hi, I'm Mike. I made this to make space weather click for more people. Thanks for stopping by.
Get an email about an hour before a geomagnetic storm reaches Earth, from direct measurements at the L1 monitor. Not a forecast. A measurement with a travel time. Then a follow-up saying whether it verified.
For aurora chasers, radio operators and educators. A few emails a month at most. Unsubscribe in one click. Privacy