• A long-duration C3 solar flare at the Sun’s farside

    NASA’s STEREO-Behind spacecraft observed a significant eruption on the farside of the sun today. Although the blast was eclipsed by the edge of the solar disk, it nevertheless produced a long-duration  C3 solar flare detectable from Earth. The blast site is not far

  • Recent solar activity

    Sunspot 1393 is growing rapidly, more than tripling in area since Friday. So far, however, the active region has not produced any strong flares. Solar activity remains low.Solar activity increased somewhat, with a solar flare detected around Sunspot 1386 off the

  • Eruption on farside solar western limb

    Sunspot 1384, currently located just behind the sun’s western limb, erupted today around 14:45 UTC. It registered as a long duration C2.4 flare and it appears to be connected to magnetic filaments snaking over the horizon to the Earthside of the sun. This event

  • New large sunspot rotating Earthward on the eastern limb

    A new large sunspot is now rotating into view on the eastern limb. It just produced a minor C6.7 Solar Flare at 22:26 UTC Tuesday evening. Solar activity was moderate on Monday with one M-Class flare detected around Sunspot 1387. Numerous C-Class events were

  • M-class flare events with Earth and Mars-directed CMEs

    Sunspot 1387 produced another M-Class flare, this time peaking at M1.5. This latest solar flare took place at 02:27 UTC Monday morning and indicates the potential for bigger things to come.New sunspot 1387 erupted during the late hours of Christmas Day, producing an

  • A minor solar wind stream is buffeting Earth’s magnetic field

    A minor solar wind stream is buffeting Earth’s magnetic field. Arctic sky watchers should be alert for auroras.Solar windspeed: 469.1 km/secdensity: 2.3 protons/cm3The Radio Sun10.7 cm flux: 135 sfuPlanetary K-indexNow: Kp= 1 quiet24-hr max: Kp=