May and June 2024 saw the highest sunspot numbers on the sun since 2002, but is the peak of the solar cycle here yet? The sun follows an 11-year solar cycle of increasing and decreasing activity. Although not the first astronomer to discover the solar cycle, the solar cycle numbering and naming convention was first introduced in 1852 by Swiss astronomer Johann Rudolf Wolf. Within his new solar cycle numbering system, he set the historic 1755-1766 solar cycle ‘Solar Cycle 1’. By the time of his work, the sun was…
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Celebrate the Heliophysics Big Year with Free Heliophysics and Math Webinars from NASA HEAT
2 min read Celebrate the Heliophysics Big Year with Free Heliophysics and Math Webinars from NASA HEAT The Heliophysics Big Year (HBY) is a global celebration of the Sun’s influence on Earth and the entire solar system. It began with the Annular Solar Eclipse on Oct. 14, 2023, continued through the Total Solar Eclipse on Apr. 8, 2024, and will conclude with Parker Solar Probe’s closest approach to the Sun in December 2024. Challenged by the NASA Heliophysics Division to participate in as many Sun-related activities as possible, the NASA…
Read MoreSee the sun rage behind the ISS in epic time-lapse photo
Miguel Claro is a professional photographer, author and science communicator based in Lisbon, Portugal, who creates spectacular images of the night sky. As a European Southern Observatory Photo Ambassador and member of The World At Night and the official astrophotographer of the Dark Sky Alqueva Reserve, he specializes in astronomical “Skyscapes” that connect both Earth and the night sky. This image shows the silhouette of the International Space Station (ISS) as it crosses in front of the sun’s disk at a distance of 274 miles (441.5 km) from us and at a speed of about 4.5 miles…
Read MoreIt’s back! Aurora-sparking sunspot returns for rare 3rd trip across the sun, firing off explosive solar flare (video)
The historic sunspot region that sparked the record-breaking auroras of May 2024 has returned in explosive fashion, firing off a colossal M9.3 class solar flare on June 23. But this isn’t the first time we have encountered this hyperactive sunspot. AR3723 is the returning version of sunspot AR3697 and before that AR3664 — which was responsible for the colossal G5 geomagnetic storm that triggered epic auroras around the world. The sun‘s rotation period averages 27 days, which means Earth can view a given active region for around two weeks before…
Read MoreMore people Googled ‘northern lights’ in May 2024 than in any other month in history
The terms ‘northern lights’, ‘space weather‘ and ‘geomagnetic storm’ were googled more in May 2024 than in any other month in the search engine’s history. With April’s total solar eclipse, and Mid-May’s widespread aurora show, public interest in the sun has been much higher than usual. As photos and discussions of the eclipse and northern lights flooded social media and secured segments on prime-time news broadcasts, Google search inquiries for these topics shot up significantly. Using the Google Trends feature, we can utilize Google search statistics to track how public…
Read MoreSun unleashes giant plasma plume and reels it back in apparent ‘failed eruption’ (video)
The sun erupted in a dazzling spectacle on Monday (June 3), firing off an intense solar flare captured in stunning detail by a NASA solar observatory. But when you look closely at the eruption, it appears that much of the solar material in the vast plasma plume didn’t manage to escape the grasp of the sun. In the video, captured by NASA’s Solar Dynamics Observatory during an M-class solar flare, you can see a huge plasma plume rise from the sun’s surface, only to be reeled back in during an…
Read MoreColossal X-class solar flare suggests return of sunspot group that fueled May’s epic auroras (video)
The colossal sunspot group AR3664 responsible for the epic May 2024 solar storms and widespread auroras is back — well, almost. Yesterday (May 27), a powerful X-class solar flare erupted from the sun‘s southeastern limb, peaking around 3:08 a.m. EDT (0708 GMT). Solar flares are energetic eruptions of electromagnetic radiation from the sun’s surface that occur when magnetic energy accumulating in the solar atmosphere is released. They are categorized by size into lettered groups, with X-class being the most powerful. Within each class, numbers from 1-10 (and beyond for X-class…
Read MoreHuge, solar flare-launching sunspot has rotated away from Earth. But will it return?
Talk about a dramatic exit! The sunspot AR3664, which is about 15 times wider than Earth, has finally rotated out of our planet’s view — but not before firing off two more big solar storms. The most recent solar flares from AR3664 were in the X class, the strongest category — an X3.4 monster that peaked today (May 15) at 4:37 a.m. EDT (0837 UTC) and an X2.9 that followed at 10:38 a.m. EDT (1438 GMT). Related: Watch monster flare-spewing sunspot grow to be 15 times wider than Earth (video)…
Read MoreHow do you forecast a solar storm? Space weather experts explain
For those who had the opportunity to see the aurora this weekend, it was quite a spectacular moment. But while seeing the aurora borealis is thrilling and exciting for us, the same coronal mass ejections (CMEs) and geomagnetic storms that make these light shows possible can also wreak havoc on some of the technology that’s part of our daily lives. There was a lot of buzz last weekend about other possible impacts when the historic geomagnetic storms reached the extreme G5 category. Companies that operate satellites like SpaceX reported on…
Read MoreThe stormy sun erupts with its biggest solar flare yet from a massive sunspot — and it’s still crackling (video)
Just when we thought we’d seen the most powerful flares from a colossal sunspot, the sun unleashed its strongest eruption of the weekend yet, triggering a radio blackout even as the star continues to crackle with solar storms. According to NOAA’s Space Weather Prediction Center (SWPC), the dynamic solar flare occurred late Saturday (May 10) from an active sunspot region called AR3664. It peaked at 9:23 p.m. EDT (0123 May 11 GMT), registering as a massive X5.8 class flare, SWPC officials said. As a result, parts of some of the…
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