ScienceSolar flares from 80,000-mile wide sunspot threatens Earth AR 12192, an enormous sunspot that can be seen by a properly shielded naked eye, has already spawned powerful solar flares including two x-class flares, the most powerful of solar flares.by Rhodi Lee
ScienceESA wants you to name Rosetta Philae landing site on comet 67P/Churyumov-Gerasimenkoby Rhodi Lee