6 Calculate or estimate how long it takes that the following features/events are observed by (or become known to) scientists located at Goddard, USA: - 2 MeV protons accelerated during a solar flare - Moreton H-alpha wave with an initial speed of 600 km s−1 - a magnetic cloud ejected from the Sun, first observed in a SOHO/LASCO C2 coronagraph image at height 2 R_sun, and propagating at speed 1500 km s−1 .
6 Calculate or estimate how long it takes that the following features/events are observed by (or become known to) scientists located at Goddard, USA: - 2 MeV protons accelerated during a solar flare - Moreton H-alpha wave with an initial speed of 600 km s−1 - a magnetic cloud ejected from the Sun, first observed in a SOHO/LASCO C2 coronagraph image at height 2 R_sun, and propagating at speed 1500 km s−1 .
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Calculate or estimate how long it takes that the following features/events are observed by (or become known to) scientists located at Goddard, USA:
- 2 MeV protons accelerated during a solar flare
- Moreton H-alpha wave with an initial speed of 600 km s−1
- a magnetic cloud ejected from the Sun, first observed in a SOHO/LASCO C2 coronagraph image at height 2 R_sun, and propagating at speed 1500 km s−1 .
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