Initializing, please wait a moment
Cach kham pha Sunspot Magnetic Loops 3D Explorer
Open the explorer and watch coronal loops arc between a sunspot pair, tracing the Sun magnetic field.
- Open https://freetoolonline.com/space-3d/sunspot-magnetic-loops.html and wait for the active region.
- Read the facts panel: the umbral field (~0.3 T), umbra temperature, and 1-3 million K loops.
- Watch plasma packets flow along the arcade of loops.
- Toggle the polarity markers to see the two magnetic footpoints, or hide the loops.
- Compare with the 3D Sunspot Cycle explorer for the 11-year cycle, or Sun Structure 3D for the interior layers.
Next: the when guide or vs alternatives. Open the Sunspot Magnetic Loops 3D Explorer.
Why trust these tools
- Ten-plus years of web tooling. The freetoolonline editorial team has shipped browser-based utilities since 2015. The goal has never changed: get you to a working output fast, without an install.
- No install, no sign-up. Open a tool and get a working output in seconds - nothing to download and no account to create. Tools that need heavy processing run it on our service, so even a low-powered machine gets the job done.
- Analytics stops at the page view. We measure which pages get visited, not what you type or upload inside a tool. There is nothing to sign in to and no profile is attached to your input.
- Open-source core components. The processing engines underneath (libheif, libde265, pdf-lib, terser, clean-css, ffmpeg.wasm, and others) are public and audit-able. We link to each one in its tool page's footer.
- Free, with or without ads. All tools are fully functional without sign-up. The Disable Ads button in the header is always available if you need a distraction-free run.