Grand écran : nos plus belles photos du Soleil. Juste pour le plaisir des yeux, voici une sélection à partager des plus belles photos du Soleil publiées sur le site de Ciel & Espace. [Mise à jour du 23/05 : Vous pouvez désormais voter pour votre image préférée ! Voir en bas de page.] Elles ont été prises depuis le sol ou l'espace, à travers des filtres le plus souvent, et montrent différentes facettes de notre étoile au cours des cinq dernières années, ce qui équivaut à peu près à la moitié d'un cycle solaire. Ces images spectaculaires ne doivent pas nous faire oublier que, malgré sa puissance comparable à cent millions de milliards de centrales nucléaires, le Soleil est une paisible étoile de taille moyenne, parmi les 200 milliards que compte notre galaxie.
Sa particularité, jusqu'à nouvel ordre, est d'être la seule étoile a avoir enfanté la vie, sur une petite planète insignifiante, éloignée de 150 millions de kilomètres. Dans environ 5 milliards d'années, le Soleil se transformera en géante rouge. L'étoile du jour Cracheur de feu. The Very Latest SOHO Images. SDO | Solar Dynamics Observatory. SDO | Data 4096 2048 1024 512 4096 PFSS 2048 PFSS 1024 PFSS 512 PFSS 48 hr MP4 4096 2048 1024 512 4096 PFSS 2048 PFSS 1024 PFSS 512 PFSS 48 hr MP4 4096 2048 1024 512 4096 PFSS 2048 PFSS 1024 PFSS 512 PFSS 48 hr MP4 4096 2048 1024 512 4096 PFSS 2048 PFSS 1024 PFSS 512 PFSS 48 hr MP4 4096 2048 1024 512 4096 PFSS 2048 PFSS 1024 PFSS 512 PFSS 48 hr MP4 4096 2048 1024 512 4096 PFSS 2048 PFSS 1024 PFSS 512 PFSS 48 hr MP4 4096 2048 1024 512 4096 PFSS 2048 PFSS 1024 PFSS 512 PFSS 48 hr MP4 4096 2048 1024 512 4096 PFSS 2048 PFSS 1024 PFSS 512 PFSS 48 hr MP4 4096 2048 1024 512 4096 PFSS 2048 PFSS 1024 PFSS 512 PFSS 48 hr MP4 HMI Magnetogram 4096 2048 1024 512 4096 PFSS 2048 PFSS 1024 PFSS 512 PFSS 48 hr MPEG HMI Colorized Magnetogram 4096 2048 1024 512 48 hr MPEG HMI Intensitygram - colored 4096 2048 1024 512 48 hr MPEG HMI Intensitygram - Flattened 4096 2048 1024 512 48 hr MPEG HMI Intensitygram 4096 2048 1024 512 48 hr MPEG HMI Dopplergram Soft X-ray Latest SAM Rotation movie EVE Diodes 3-day plot.
Turningtowardearth.gif (Image GIF, 512 × 512 pixels) Sunspot AR1944: Bigger than Earth. A few days ago, a sunspot appeared over the western edge of the Sun. Dark and foreboding, like a malevolent eye, Active Region 1944 (or just AR1944) is huge, actually a cluster of more than 60 individual sunspots, one of which is far, far larger than the Earth itself.
It’s been cloudy here in Boulder, Colo., the past few days, but this morning it cleared up. I rigged a solar filter for my camera using some safe solar filter glasses given to me by my buddy Stephen Ramsden and went outside to brave the cold and get some shots. Here’s the best one: As you can see, the main sunspot is a bruiser. If you’re still having trouble picturing how ridiculously big this spot is, then maybe this observation of it by the space-based Solar Dynamics Observatory will help: Photo by NASA /SDO/Helioviewer.org Holy magnetic bottling! Sunspots are areas where the Sun’s magnetic field is very active. Staying up top on the Sun comes with a price, however. Mammoth sunspot erupts with X1-flare. Huge sunspot region 1944 rotated to the center of the sun’s disk today Jan. 7. This photo was taken at noon by the Solar Dynamics Observatory.
The largest spot in the group is big enough to see with the naked eye using a safe solar filter like a #14 welder’s glass. Credit: NASA That huge sunspot we talked about two days ago erupted today at 12:32 p.m. with a powerful X-class flare. I love solar fireworks because there’s always a possibility for a nice aurora display in the wake of a large flare. Good news this time around – the cloud of subatomic particles called a coronal mass ejection appears to be directed toward the Earth. An X1-class flare erupts from within the large sunspot group 1944 this afternoon Jan. 7. If it does blow past our planet and forge a connection with our magnetic field we might expect chances for aurora to sharply increase in a couple of days.