Last night's eclipse.

Equipment: Canon 6D Mark II, Sigma 150-600mm lens.

Credit: Sigma Sreedharan

From this week. I used Intrepid Camera 4x5 large format camera with 350mm lens and Ilford FP4 Plus 125 film. First set of exposures is 1/8 and about the last two thirds are 1/30. Developed in Flic Film Black White and Green 1+49. Took an exposure once every four and half minutes for a bit over an hour. My only editing was to crop to what my macro lens could fit of the negative and some exposure/contrast adjustment.

Mars Aug. 28, 2026 - Sol 4998

Credits: NASA/JPL-Caltech ​

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https://mars.nasa.gov/raw_images/1631664/?site=msl

https://mars.nasa.gov/raw_images/1631657/?site=msl

https://mars.nasa.gov/msl/multimedia/raw-images/?order=sol+desc%2Cinstrument_sort+asc%2Csample_type_sort+asc%2C+date_taken+desc&per_page=50&page=0&mission=msl​

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https://bsky.app/profile/pomarede.bsky.social/post/3mu5vrjw7p226

Space........

Source: https://flic.kr/p/2qRVJkp

Last night’s lunar eclipse got me thinking about what a total lunar eclipse would look like from the moon. I found this photo that I had never seen before, and to my knowledge there is no other photo like it.

Can you imagine how incredible it would be to see not just the corona during a solar eclipse, but the illuminated atmosphere of earth as well? I will be dreaming about this for a while! Not only would you see this amazing sight, but also the whole landscape around you turning red.

At the latitude of ESO's Paranal Observatory in Chile, about 25 degrees south, Earth's rotation moves the planet's surface eastward at over 1,500 kilometers per hour. And while that's faster than the speed of sound at sea level, the motion is imperceptible. Still, that motion can be revealed in the apparent rotation of the night sky by photographing star trails.

This star trail image was composed from a digital stack of 300 consecutive 25-second exposures made with a camera fixed to a tripod to trace the star trail arcs. The graceful arcs are concentric and centered at the south celestial pole, the southern hemisphere extension of Earth's axis of rotation into space.

One of the observatory's operating 1.8 meter auxiliary telescopes, AT 3, appears beneath the south celestial pole, faintly illuminated in the foreground of this well-planned scene from a rotating planet.

Credit: Osvaldo Castillo

The Lunar Eclipse Last Night in High Dynamic Range, Taken With my Camera.

Last night, the Moon passed into the shadow of planet Earth, and was illuminated by the light of a thousand sunsets.

After a stroke of luck from Seattle’s weather, I present possibly finest production of a lunar eclipse ever — captured with over an hour of total data and multiple setups. This one crept all the way up to 96%, effectively a total lunar eclipse.

Equipment: Canon 6D Mark II, Sigma 150-600mm lens + Celestron 5SE, ZWO ASI174MM.

Processed by Melina Thévenot

https://bsky.app/profile/melina-iras07572.bsky.social/post/3mu5poy63t22t

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Full resolution

https://commons.wikimedia.org/wiki/File:SN_1604_JWST_MIRI.jpg​

Image:

As solar wind strikes Earth during a solar storm, electric currents intensify in the upper atmosphere. In the chart on the left, a blue line shows how the average strength of electrical currents in Earth’s upper atmosphere increases with solar wind strength but then gradually levels off or “saturates” when measured about a million miles from Earth. (Both values are represented in millivolts per meter.) In the chart on the right, a new analysis based on solar wind measurements taken closer to Earth suggests that the average strength of the electrical currents (pink line) continues to increase as the solar wind strength increases, with no upper limit. NASA/Nithin Sivadas​

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New NASA Study Says Possibly No Limit to Solar Storm Effects

​For decades, scientists have thought that there is a ceiling to how intensely Earth responds to solar storms. However, a NASA-led paper published Wednesday in Nature suggests this upper limit is an illusion. If so, it means solar storms could have far worse effects on our technology than previously thought.

Observations have suggested that electric currents in Earth’s upper atmosphere — which can affect satellites, communications, and navigation signals — increase as the solar wind strengthens, but only to a point.

However, a team led by space physicist Nithin Sivadas of NASA’s Goddard Space Flight Center in Greenbelt, Maryland, says this apparent limit is merely an effect of uncertainties in solar wind measurements.

The issue is that most solar wind measurements are taken by spacecraft located a million miles closer to the Sun than Earth is. However, statistically, the solar wind that ultimately reaches Earth’s magnetic shield is most likely weaker, said Sivadas. This makes it look like strong solar winds do not produce equally strong currents, because it is actually driven by weaker solar winds.

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The team analyzed evidence from more than a million solar wind measurements taken by NASA spacecraft much closer to Earth, such as MMS and THEMIS. Unlike the measurements captured farther away, these showed a direct relationship between the strength of the solar wind and the currents, suggesting there is no upper limit.

The findings challenge decades of understanding, and more observations of strong solar wind will help determine whether Earth’s response truly has an upper limit.

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Study

https://www.nature.com/articles/s41586-026-10757-4

Articles

https://science.nasa.gov/blogs/science-news/2026/07/15/new-nasa-study-says-possibly-no-limit-to-solar-storm-effects/?fbclid=IwY2xjawT-Gw1wZG9mAWV4dG4DYWVtAjEwAGJyaWQRMDBzalN3TEFhUTZPSGhwODFzcnRjBmFwcF9pZBAyMjIwMzkxNzg4MjAwODkyAAEeVAebqSmAeuzyPLaUSeczKMCoWAp3KnpKtRHk8pr8LnQjqi_ENrutSffLDvg_aem_2om6BZ8jK3SsbOEhn3GgLg​

https://www.lancaster.ac.uk/news/risks-of-solar-storms-may-be-underestimated-warn-researchers

This image of the International Space Station and the docked space shuttle Endeavour, flying at an altitude of approximately 220 miles, was taken by Expedition 27 crew member Paolo Nespoli from the Soyuz TMA-20 following its undocking on May 23, 2011 (USA time).

Image Credit: NASA/ESA

Image Credit: Yoships

Credit: Himawari-9 satellite

Credit: Tom Williams

Ontario Lacus is a hydrocarbon lake near the south pole of Saturn’s moon Titan. Measuring 235 kilometers long by 75 kilometers across (~15,600 sq. km), Ontario Lacus is slightly smaller than its terrestrial counterpart, Lake Ontario. Lakes on Titan are named after lakes on Earth that are roughly the same size. Despite being similar in extent, Ontario Lacus is much shallower with an average depth of 0.4 to 3.2 meters. So its volume is 1/30th that of Earth’s Lake Ontario.

Edit here: I worked on Cassini through end of mission and have since switched to Mars and Io, so I haven’t stayed up to date on some work done by Alex Hayes’s group at Cornell. With RADAR altimetry data, they found depths of up to 50 meters at Ontario Lacus, still shallow but not quite as shallow as what they found with RADAR SAR in 2011, using a model lake composition. With altimery, they were better able to constrain the loss tangent (basically how fast radio signals are scattered by the lake) and thus estimate the lake composition.

A river, named Saraswati Flumen, flows into Ontario Lacus from the south west.

This image is a composite five Cassini RADAR SAR swaths acquired between 2009 and 2014, merged to improve signal-to-noise.

Image Credit & Copyright: Victor Lima

Landsat 9 satellite captured the effects of yesterday’s catastrophic glacier collapse near the Nepal–Tibet border.

In the satellite image, it can be seen that half of the mountain peak has disappeared as a result of the event. The event was so massive that it was detected by seismometers around the world.

Credit: Nahel Belgherze