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How did solar get cheap? Phase 1: 1950-1990s - NASA Solar was invented in the US by Bell labs and pretty much only used by NASA who needed something very lightweight to power their space assets. Phase 2: 2000 - Energiewind The German government passed a law where it guaranteed…
Audience poll: How many photos do YOU have in your camera roll?? 📷
And you thought it was hard to scroll through all the photos on your phone... NASA’s Mars Reconnaissance Orbiter has snapped its 100,000th image of the surface with its HiRISE camera. More on this milestone image: go.nasa.gov/4oXJQpu
The Voith-Schneider Propeller is a vertical-axis marine drive whose spinning blades change pitch continuously, letting a ship generate instant thrust in any direction, like a helicopter rotor underwater. Super-maneuverable, perfect for tugs and ferries.
Imaging Asteroid 584 Semiramis tonight. It is a fast main-belt asteroid moving 71″/hr across the sky. It’s about 14,000 baby giraffes wide and weighs 823,000,000,000,000,000 kg. During my 1-hour exposure, it traveled the length of 3,500,000 blue whales. 🦒🐋
The sun's potential magnetic field model PFSS helps us to understand the path/ deflection of erupted material.
Two moderate (M-class) solar flares on the Sun today, showing a beautiful example of ‘flare loop arcades’. These are bright ‘slinky-like’ arches of plasma, formed as the solar flare reconfigures magnetic fields within the Sun’s atmosphere!
Another time lapse of the solar particle event last month. I accidentally captured parts of the window frame but I think it adds to the ISS feel. Nikon Z9 | 14mm | Nov 12, 2025.
Who wants a hug?
This happens when magnetic field lines of opposite polarity touch: reconnection, sudden release of energy, solar flare, plasma eruption We see a strong M6.0 flare from small region 4300 in the eastern part of the sun. The coronal mass ejection will likely miss earth.
Gracefully carving through the solar corona, a mini eruption of filament plasma erupted from the Sun earlier today! Beautiful.
The entirety of November 2025 on the Sun! Despite strong solar flares and severe geomagnetic storms, last month saw a low sunspot count – with the second lowest monthly total since November 2022 (with half of the sunspots present in July/August 2024).
A chain of filament eruptions was observed. The sequence initiated with a partial eruption of a large SW filament, continued with a smaller eruption near AR4297, progressed to a secondary SW lift-off, then an NW-sector filament eruption, and finally a limb eruption.
Combined arrival of solar sector boundary crossing, a coronal hole's stream Interaction region und possibly parts of a coronal mass ejection A long period of negative Bz (north south component of the interplanetary magnetic field) makes aurora likely in mid latitudes.
Comet SWAN is on the move. ☄️ Captured by @NASA's PUNCH spacecraft, comet 2025 R2 (SWAN) can be seen moving away from the Sun as the solar wind blows its tail away, creating the illusion that the comet is “moving backward.” 🔗: go.nasa.gov/4rwJ5G7
The CME from the X1.9 flare in ex AR 4274 is very impressive: partial halo, consistent with its location on the limb. It looks like quite a fast CME, the dense bulk is going east. Not expecting any effects for us, not even a glancing blow. If 4274 manages to blast more flares and…
WOW! The coronal mass ejection (eruption of plasma) blasted out by the X1.9 flare is absolutely spectacular!
Two days east limb of the Sun in different wavelengths: SDO AIA 171/304/131/211 Å show magnetic loops, solar flares, filament material and eruptive movements. Active regions in the S (huge 4294+4296), near the equator (4295), N behind the limb (ex 4274) - rare + remarkable
What a spectacular eruption from the active region rotating onto the Earth-facing disk. There was a large amount of plasma ejected with this CME triggered by a major X1.9 flare peaking around 248 UT on Dec 1.
Here is AR 4294 this morning with the Earth for scale. As of now, it is 1400 MSH (millionths of a solar hemisphere) and is the largest sunspot group of 2025. It has a 15% chance to create an X-class flare in the next 24 hours according to NOAA SWPC.
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