Tag: science

Martian crater with many gullies flowing into corroded “irregular cellular structures”

2:20 pm

Gullies and corroded glacial material in a Martian crater

Cool image time! The picture to the right, rotated, cropped, reduced, and enhanced to post here, was taken by the high resolution camera on Mars Reconnaissance Orbiter (MRO) and downloaded on June 1, 2026.

The science team labels the features on the floor of the crater vaguely as “irregular cellular structures on crater floor,” which to my eye — after looking at innumerable MRO pictures of craters on Mars — looks like glacial fill that has begun to sublimate away. As it does, from below, its protective top layer of dirt and debris begins to resemble peeling paint, or in this case the “irregular cellular structures” as described by the scientists.

Their description is purposely vague because they have probably not yet confirmed the presence of ice in this particular crater, though this supposition is reasonable based on almost two decades of orbital data.
» Read more

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Japan’s lunar lander startup Ispace wins $74 million contract from Europe

8:36 am

Artist rendering of Ispace's Ultra lunar lander
Artist rendering of Ispace’s Ultra lunar lander

Only a little more than a week after NASA canceled a major lunar lander contract with the Japan’s lunar lander startup Ispace, the company’s European division has won a $74 million lunar lander contract from the European Space Agency (ESA).

The agreement represents ESA’s commitment to funding MAGPIE, Europe’s first lunar polar ice exploration rover and its flight. MAGPIE will investigate the Moon’s south polar region, advancing scientific understanding of lunar volatiles, water ice stability and regolith properties while supporting future resource prospecting to enable lunar exploration.

The contract, valued at €65 million, funds the full remaining delivery of the MAGPIE mission, including rover and payload development, manufacture, testing, transportation to the lunar surface and lunar surface operations.

MAGPIE will fly on Ispace’s planned fourth mission, scheduled for a 2029 launch and already under construction. That lander, dubbed Ultra, is being funded by Japan’s Space Strategy Fund (designed to encourage Japanese private enterprise). This new contract apparently provides it a European payload.

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The study that found half of all social science papers cannot be replicated also found that NO education research could be replicated

1:53 pm

Junk research in the soft sciences
Junk research in the soft sciences

In June 2026, I reported on a major 7-year study of more than 3,900 social science papers that found that more than half could not be replicated, suggesting that a very very large percentage of social science research is junk and should be ignored.

A recent close analysis of that paper, shown in the graph above, reveals even more starkly how worthless some of this “science” is. In the field of education, of the six papers the researchers attempted to replicate, only three could be “approximately replicated” (which the researchers appeared to consider largely unsatisfactory). No papers could be confidently replicated. In the field of business, of the six papers tested only one could be replicated, with two others getting that “approximately replicated” label.

In sociology the result was only slightly better but still terrible, with only two of nine papers replicated with confidence.

Meanwhile, about 60% of the papers tested in economic and political science could be replicated.

These are all the soft sciences, but it appears that education, business, and sociology are softer than others. Or to put it more bluntly, the research in these fields is likely all worthless. Education and sociology have been poisoned by Marxist critical race theory now for years. The education field in particular has become more interested in teaching kids the queer agenda and telling lies of oppression about western civilization than teaching the three “R’s”. This inability to replicate any of its junk research shows how bankrupt this part of academia has become.

Business research meanwhile has been equally poisoned by Marxist ideology and the bad business practices of the MBA academic world. No wonder modern corporations so routinely treat their customers like dirt, and fail so spectacular. Their Ivy League managers care only about DEI and ending capitalist oppression and nothing about running a company effectively while creating good products people will want to buy.

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Large distinct Martian gully

12:32 pm

A large gully on Mars

Cool image time! The picture to the right, rotated, cropped, and reduced to post here, was taken on June 1, 2026 by the high resolution camera on Mars Reconnaisance Orbiter (MRO).

The object of focus is obviously that large gully, draining downhill about 5,000 feet to the northeast, over a distance of about three miles.

Gullies like this are found in many places in the Martian mid-latitudes. When first discovered scientists thought they might be related to the sublimation of underground ice. More recent research suggests they are formed by the seasonal dry ice frost cycle that in the high latitudes has carbon dioxide condense to fall as snow in autumn and then sublimate away in the spring.

This latter hypothesis however generally applies to a set of gullies on the interior rim of craters, all of which experience that cycle of freeze-thaw. In the case of this large gully the former hypothesis seems more likely, as it appears to be within a thick lobe of soft material that was a mass wasting event of glacial material off the crater wall (whereby a large section detaches and moves downward). Regardless, the near surface ice impregnated in the soil appears to be sublimating away, creating the gully.
» Read more

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Could Japan’s Hayabusa-2 next target asteroid be instead a failed Soviet Mars probe?

9:53 am

Artist rendering of Phobos-1 in orbit around Mars
Artist rendering of Phobos-1 in orbit around Mars

Scientists reviewing the data known about the asteroid 1998 KY26, the next goal of Japan’s Hayabusa-2 asteroid probe, now speculate that it might not be an asteroid at all but could instead be the failed Soviet Mars probe, Phobos-1.

The researchers came up with this possibility due to 1998 KY26 small size, its inexplicable orbital shifts, and the fact that its solar orbit closely matches that of Phobos-1 after it failed to enter Mars orbit when a mistyped command shut down its systems.

Hibberd points out that the 10-metre (32.8ft) span of its solar panels matches the estimated size of 1998 KY26 and that the craft would be expected to have a high albedo. The non-gravitational acceleration of the object would be explained by solar radiation pressure as sunlight reflects off the probe’s shiny metallic surfaces.

For the interplanetary trajectory of Phobos 1 to fit the measured orbit of 1998 KY26, the probe would need to have subsequently fired its rocket twice, say the team: once on 2 September 1988 (shortly after contact was lost) and then again on 19 May 1996. This isn’t impossible for a malfunctioning spacecraft and there is some evidence that Phobos 1 did indeed fire its rocket without being commanded.

The last supposition, that the spacecraft fired its engines on its own, is the most implausible part of this theory, but not impossible.

Hayabusa-2 is scheduled to arrive at 1998 KY26 in 2031, assuming its last ion thruster does not fail. We shall then find out if this wild theory is right. If so, the probe will have an entirely different job. Rather than studying a very small asteroid, it will be studying a piece of human space history.

UPDATE: I just realized that one of the scientists putting out this theory is Avi Loeb, the Harvard hack who relentless pushed the idea that Comet 3I/Atlas was an alien spaceship long after data showed it was nothing more than a comet. His name on this work makes this hypothesis far less creditable.

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Crater impact in the ice sheets of the northern Martian lowlands

11:34 am

Crater impact in the ice sheets of the northern Martian lowlands
Click for original image.

Cool image time! The picture to the right, cropped and reduced to post here, was taken on June 1, 2026 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The science team labels this a crater with “layered deposits,” referring to the terraced glacial debris inside the crater. Researchers have found so many craters on Mars with similar features that they have given it a name, concentric crater fill. Thousands of craters in both the north and south mid-latitudes have this fill, thought to be buried glaciers protected by a mantle of dirt and dust.

The image however reveals a lot more about the ubiquitous presence of ice on Mars. Note the splash apron around the crater. Note also the gaps in the crater rim. The impact that created this crater hit a surface that had a lot of near surface ice, which immediately vaporized and melted to form the splash apron and allow the crater rim to form so unevenly.
» Read more

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Scientists use Juno to get first below surface temperature reading of Jupiter’s moon Io

9:14 am

Global map of Io's temperature, just below the surface
Global map of Io’s temperature, just below the surface.
Click for original.

Using data obtained during two fly-bys of Jupiter’s volcanic moon Io, scientists have now been able to measure for the first time the temperature up to ten to thirty feet below the surface.

The global map to the right, Figure 9 from their paper, shows the range of temperatures detected. Io is known for its many active volcanoes, generated by the tidal heat created by Jupiter’s gravitational pull.

During flybys on Dec. 30, 2023, and Feb. 3, 2024, the solar-powered Juno spacecraft came within about 930 miles (1,500 kilometers) of the moon’s surface. “The instrument measured Io’s thermal emission at depths ranging from a few inches down to tens of feet. Everywhere we looked, we found the temperature rising by more than 40 degrees Fahrenheit just several feet into the surface — a gradient far steeper than solar heating alone can explain,” said Shannon Brown, the paper’s lead author at NASA’s Jet Propulsion Laboratory in Southern California.

The data suggests two possible explanations. First, heat could be rising steadily through a conductive crust. While this background heat flow — measured at 1 to 3 watts per square meter — is relatively gentle on a local scale (roughly equivalent to a small nightlight glowing under every square yard), across the entire moon it represents a release of energy up to 30 times Earth’s average.

Alternatively, the signal could be coming from cooling lava flows, capped by roughly 30 to 35 feet (9 to 11 meters) of solidified crust, that cover about 10% of the moon’s surface at any given time.

The data also suggested that between Io’s volcanic mountains the rest of the planet is remarkable smooth, like the Great Plains of the U.S. That smoothness is not surprising, as it is probably the result of numerous flood lava events that have coated the surface.

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Scientists rally to observe the Falcon 9 that will hit the Moon on August 5, 2026

12:48 pm

Falcon 9 impact location

On August 5, 2026 at precisely 2:35 am (Easten), the upper stage used by the Falcon 9 rocket that launched in 2025 the Blue Ghost and Hakuto-R lunar landers will impact the Moon.

Scientists have now published a paper [pdf], outlining the details of that impact and calling on the astronomical community, both professional and amateur, to conduct observations. The image to the right, showing the location on the Moon where the impact will occur, comes from Figure 1 of the paper. From the paper’s conclusion:

The upcoming Falcon 9 upper stage impact on the Moon on 2026 August 5, presents an ideal opportunity for observers in the Americas and space-based assets to study a significant lunar impact in real time. Potential observables from this event include the flash at the time of impact (likely lasting less than a second) and the ejecta plume (lasting minutes to tens of minutes) Although some specifics of the impact (such as its precise visual magnitude) remain unclear due to the complexity of the physical processes involved, this event is an ideal opportunity to calibrate measurements of flash brightness and plume dynamics against a known event, should either be detected.

This event also provides an opportunity to test pipelines for measuring flash properties to locate impact events seismically, and to better understand the multi-modal hazards posed to future lunar infrastructure and astronauts from space debris impacting the Moon. It also provides an opportunity to test our capability to monitor the cislunar environment. Given the renewed interest in the lunar exploration, the impact of artificial bodies on the Moon could is almost certain to become more frequent. To avoid uncontrolled increases in the amount of space debris in lunar orbit (as is the case now in low Earth orbit), advancing monitoring of cislunar space from ground- and space-based facilities will be key.

The scientists note that the impact will occur at night when the Moon is visible in South America and in the low and mid-latitudes of North America. Though the impact flash could be as bright as magnitude 3 (thus visible to the naked eye), its location during the lunar day will likely make it too faint for ordinary observers. They say that a telescope will be needed, that binoculars will not be sufficient.

The paper is also very enlightening in that it provides a detailed history of past observed lunar impacts, both natural and artificial.

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Solar scientists come up with another “method” for predicting the Sun’s future sunspot activity

2:41 pm

The uncertainty of science: Using archival data from the last four sunspot cycles, solar scientists think they have found a new method for predicting the Sun’s future sunspot activity, based on what they claim is a “switch-off” moment in each cycle when the most extreme solar events stop happening.

The new prediction method builds on Professor Chapman’s previously developed ‘sunclock’, which maps the Sun’s irregular cycles onto a standard clock. This revealed that the most extreme space weather does not gradually fade away but instead switches off at a distinct point in each solar cycle.

Professor Chapman’s team has found that the number of sunspots present at this switch-off point is closely linked to the peak number of sunspots in the following solar cycle. This provides a new forecasting method that can predict the strength of the next solar cycle around six to seven years before it reaches its maximum, giving a longer lead time than current methods, which rely on waiting until the solar minimum.

Sounds good, eh? I would not bet one plugged nickel on this prediction method. It might work, or it might not, but even if it does, it is not based on any real understanding of why sunspots rise and fall every eleven years. Nor does it explain why the Sun’s magnetic field flips polarity in line with that sunspot cycle. This prediction is merely using past behavior to predict future actions, a method that every stock broker will tell you is fraught with danger.

Knowing however that there is a moment in each cycle where the most active sunspots and solar flares stop happening is useful. This pattern could help theorists figure out what is really going on inside the Sun.

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Scientists find evidence of six landslides on Pluto in New Horizons’ archival imagery

9:57 am

Landslide on Pluto
Click for original image.

Using archival imagery from New Horizons’ fly-by of Pluto in 2015, scientists have identified the remains of six different landslides, once again indicating that this distant planet is geologically active despite being so far from the Sun.

Each of the landslides is located along the inner rim of an impact crater, where the terrain is steep. The largest is roughly 130 square kilometers in area, or about twice the size of Manhattan. That’s near the upper size range of landslides that typically occur on Earth, Brunetti says.

The landslides range in height from 1,500 to 2,200 meters. That’s somewhat puny compared with landslides elsewhere in the solar system, but these features have a trick up their proverbial sleeves: Compared with landslides of similar heights, those on Pluto tend to run out over longer distances. That’s a sign that material tumbling down a slope on Pluto experiences less friction, on average, the team concluded. That conclusion can help constrain the material properties of Pluto, Brunetti and her colleagues suggest.

The image to the right, shows the landslide in Coughlin Crater. The red line indicates the material that fell from the crater rim, while the dashed white line indicates a crater impact that might have instigated the landslide. The scientists estimate the avalanche flowed down into the crater flow about 1.4 miles.

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Evidence of an atmosphere detected for the first time on a rocky terrestrial exoplanet

9:25 am

Scientists have now detected the first evidence of an atmosphere on a rocky terrestrial exoplanet that is also located in the habitable zone. The exoplanet, dubbed LHS 1140 b, is located circling a red dwarf star about 48 light years away and is estimated to have about 5.6 times the mass of Earth and about 2.4 times the diameter.

To test their prediction, the team used the Warm Infrared Echelle (WINERED) Spectrograph on the Magellan Telescope at Las Campanas Observatory in Chile. They observed a rare alignment, where LHS 1140 b and another planet [in the system] transited their star on the same night.

Although one planet showed no evidence of an atmosphere, the other, LHS 1140 b, showed helium escaping from around it, confirming that it retains an atmosphere.

You can read their paper here [pdf]. The discovery is of significance, as it proves finally — more than two decades after the first detection of an exoplanet — that rocky exoplanets outside our solar system can have an atmosphere. There is also evidence that this loss of helium might be seasonal in nature. From their abstract:

Helium absorption is detected in 2024 but not in 2025, indicating time-variable atmospheric escape. We interpret these results as indicating an upper atmosphere dominated by helium and depleted in hydrogen, with other volatile species trapped at lower altitudes, consistent with atmospheric fractionation models. No helium absorption is detected for LHS 1140c, a smaller and more strongly irradiated
exoplanet in the same system.

The planet has an orbit 24.7 days, and is located in the habitable zone, though overall it gets only 42% of the radiation from its star compared to Earth. Thus, it is very cold on this planet, with a gravity significant heavier than Earth’s. In other words, even if it has an atmosphere, it remains a very alien place.

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Strange flows on the flanks of a small isolated Martian mound

11:54 am

Small flows on the flanks of a small isolated Martian mound
Click for original image.

Cool image time! The picture to the right, cropped, enhanced, and rotated so that north is to the top, was taken on May 30, 2026 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

This mound is small, only about 150 to 600 feet high, depending on where you mark the base. The science team labels the curved black arcs that cover the mound’s northern slopes as “small scale lobes,” suggesting they think these curves mark the foot of multiple small landslides, or more accurately described as “mass-wasting events,” as instead of an avalanche of discreet boulders and rocks, the slide is comprised of mud-like material sliding downhill en masse.

The black material at the foot of these slides as well as on the mound’s peak and south and eastern flanks is a bit more puzzling. The overview map below provides one possible explanation, but leaves us with other more tantalizing possibilities.
» Read more

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Scientists detect Jupiter-sized exoplanet hidden in debris disk surrounding the star Beta Pictoris

12:53 pm

Using spectroscopic infrared data from the Webb Space Telescope as well as ground-based telescopes, astronomers have discovered an exoplanet with two times the mass of Jupiter hidden inside the well-studied debris disk that surrounds the nearby star Beta Pictoris.

Located 63 light-years from Earth and about 23 million years old, Beta Pictoris is a nearby system in the Milky Way offering a rare glimpse of the interactions between newborn planets and the disk of dust and debris left behind from their formation.

The team estimates that the newfound Beta Pictoris d is likely at least two times the mass of Jupiter, making it the smallest of the three known giant planets in the system. Modeling suggests it likely circles around its star at about 30 astronomical units, comparable to the region occupied by Neptune in our own solar system. It’s the widest orbit of the known three planets, but still located inside the inner edge of the debris disk.

Beta Pictoris’ debris disk has been a point of interest for astronomers for decades. The star is somewhat comparable to our Sun though significantly younger, and it is believed the disk is a baby solar system in formation. This new planet’s location near the disk’s inner edge might explain the sharpness of that edge: The planet is shepherding the material in the disk.

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Perseverance data documents the multiple impact history at Jezero Crater

12:34 pm

Spherules at Broom Point
Figure 8 from the paper.

Using data obtained last year when the Mars rover Perseverance did its first exploration outside of Jezero Crater, scientists now believe that material documents not only the impact that formed Jezero, but the much larger Isidis Basin impact eons earlier.

You can read their paper here. The image to the right is the paper’s Figure 8, showing the many impact spherules found at the site, dubbed Broom Point. From the press release:

While volcanoes can produce similar glassy droplets, they rarely occur in such high abundance, pointing to asteroid impacts, instead, as the primary architect. In fact, the largest beads rival those flung out by the dinosaur-killing Chicxulub asteroid’s impact on Earth.

In reviewing the data, the scientist found evidence of two major impacts.

First, a colossal asteroid impact created the 1,200-mile-wide (1,900-kilometer-wide) Isidis Basin, one of the largest impact basins on Mars, upending and tilting the once-flat rock layers. Later, a second asteroid likely struck, forming Jezero Crater, which measures 28 miles (45 kilometers) across. This second impact fractured and uplifted the already-tilted rocks into the dramatic formations the rover sees today.

This conclusion is not surprising. Orbital data has clearly suggested this sequence of events for decades. Scientists now have confirmed it geologically with actual ground samples.

In addition, the data suggested the occurrence in the past of fast debris flows, likely caused “when molten rock hits water or ice that instantly flashes into steam.” Though Jezero Crater is now in the dry equatorial regions of Mars, the geological evidence has consistently suggested there was once ice or water there. This data reinforces that conclusion.

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Hiking into the solar system’s biggest canyon

12:09 pm

Overview map

The canyon walls in one spot in Valles Marineris
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on June 3, 2026 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The white dot on the overview map shows the location, on the northern interior wall of Valles Marineris, the largest canyon in the solar system. The scientists took this image to get a good look at those canyon walls. I am highlighting the image because it provides a good way to illustrate the monumental scale of this vast canyon.

The inset on the overview map includes an orange dotted line, following the likely route for a trail along the nose of this ridge, going from the rim to the canyon floor. The picture to the right shows only one small section of that ridge trail, near the top. And yet, from the upper left to the lower right of the photograph a hike along that ridgeline would cover 2.2 miles and descend about 4,500 feet, a descent somewhat comparable to hiking into the Grand Canyon though dropping much more steeply. On either side of you the slopes would drop off from 1,600 to 2,000 feet.

To hike from the top of the rim to the canyon floor however would be far more challenging and be even more spectacular. The length of that orange dotted line is about 17.3 miles, with the total elevation drop about 23,000 feet — 3,000 feet greater than climbing the highest mountain in the U.S., Mount McKinley in Alaska.

Think about it. Along this part of Valles Marineris the elevation difference between the canyon floor and the rim is routinely much greater than the height of America’s tallest mountain. Every hike down into that canyon along the north wall would present a similar challenge. And from this point that northern canyon wall extends more than 650 miles westward and about 250 miles eastward. That’s a lot of Mount McKinley’s lined up in a row!

With these scales, it is at present difficult to imagine what the view from that rim would be like. You would see farther and deeper than most places on Earth, on a planet with a far thinner but more dusty atmosphere.

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Astronomers detect a sugar molecule when looking towards the galactic center

9:44 am

The erythrulose sugar molecule
From Figure 1 of the paper.

Astronomers have detected for the first time a sugar molecule in interstellar space, based on data obtained when looking at a molecular cloud near the galactic center.

You can read the paper here. From the press release:

An international team led by CAB researcher Izaskun Jiménez-Serra has now identified the first sugar in interstellar space: erythrulose. This molecule is the only possible four-carbon ketose, and on Earth it is commonly found in raspberries and sunless tanning products. Erythrulose was detected toward the molecular cloud G+0.693−0.027, located near the centre of our Galaxy, the Milky Way. The discovery was made possible by ultra-sensitive, broadband spectroscopic surveys carried out with the 40-m Yebes radio telescope and the 30-m telescope of the Institute for Radio Astronomy in the Millimeter Range (IRAM).

The team identified 12 spectral lines matching the laboratory spectrum of erythrulose measured at the University of the Basque Country. The study also shows that this sugar is at least eight times more abundant than similar three-carbon sugars, none of which were detected in the same region.

Extrapolating from this data the astronomers speculate that “between 0.5 and 50 million tonnes of this sugar could have reached Earth’s surface during the Late Heavy Bombardment, which occurred approximately 4.1 to 3.8 billion years ago.” They base this conclusion on the nature of the molecule. If it could form in interstellar space, it is even more likely to have formed in the early solar system.

To put it mildly, that speculation is quite uncertain.

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Astronomers think they have identified the 1st black hole inside the Milky Way’s largest globular cluster

11:08 am

Omega Centauri
Click for original image.

Using both archival data from the Hubble Space Telescope and infrared data from the Webb Space Telescope, astronomers think they have identified the first black hole ever found inside the globular cluster Omega Centauri.

The image to the right, reduced to post here, was taken by the Hubble Space Telescope and shows the globular cluster, the largest such object in the Milky Way, with an estimated 10 million stars packed into a space only 150 light years across. It is located about 17,000 light years away. Previous research had suggested it held at least one intermediate-sized black hole within it, with models suggesting another 10,000 stellar-mass black holes. Now scientists think they have found the first of the latter group, indicated by the red circle in the inset.

By sifting through more than 20 years of Hubble archival data and pulling in recent Webb data to further refine their astrometric measurements, the team located a star orbiting an invisible object so hefty that it has to be a black hole. Dubbed oMEGACat BH-2, it is the first stellar-mass black hole detected in Omega Centauri, and it has some surprising qualities. oMEGACat BH-2 has a lower-than-expected mass and, with its visible star companion, the black hole-star duo has the longest orbital period of any black hole binary system known to date.

The star orbits the black hole every 94 years. The long orbit suggests to the scientists that these objects did not form together but were captured because of the crowded nature of Omega Centauri. The scientists also believe that crowded nature will likely cause them to break free of each other, sometime in the future.

There are innumerable uncertainties and questions remaining. First, the detection needs confirmation. Second, where are the thousands of other expected stellar-mass black holes? And where is that predicted intermediate-sized one? Moreover, though astronomers believe the halo of the Milky Way’s 158 known globular clusters mark the very early history of the galaxy, much of that history remains unsettled.

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BepiColumbo’s team prepares for arrival at Mercury in the fall

12:36 pm

The arrival plan for BepiColombo
Click for original graphic.

After eight years of travel through the inner solar system to get to Mercury, the European/Japanese dual orbiter mission BepiColombo is finally getting close to arrival at Mercury in the fall, and the science team has been doing rehearsals to prepare for that orbital insertion.

Teams must align timelines, verify readiness criteria and maintain a common understanding of what constitutes a ‘go’ or ‘no-go’ decision. During one recent simulation, controllers were confronted with an anomaly that forced them to abort and re-schedule a planned separation scenario. “It generates continuous discussions and iterations between the different teams,” Nacho adds.

The exercise highlighted an essential aspect of Mercury arrival: success depends not only on operating the spacecraft, but on ESA and JAXA working together as one team.

That arrival is made more complicated in that BepiColombo is not a single orbiter. It is made up of the following parts:

  • The Mercury Transfer Module (MTM), which provided the service module and ion engines for the journey, including six fly-bys of Earth, two ofVenus, and six of Mercury
  • The Mercury Planetary Orbiter (MPO) from the European Space Agency (ESA)
  • The Mercury Magnetospheric Orbiter (Mio) from Japan’s space agency JAXA
  • The Mio Sunshield and Interface Structure (MOSIF), which protected everything during its journey in the inner solar system close to the Sun

The graphic to the right outlines the arrival plan. First the MTM must separate. Then the two orbiters enter Mercury orbit. Next Japan’s Mio separates and is deployed in its own orbit. Then the sunshield is ejected from Europe’s orbiter and it moves into its planned orbit.

As the spacecraft uses ion engines, with low but continuous thrust, these maneuvers can take weeks.

Both orbiters have complementary orbits to study different aspects of the planet. Europe’s orbiter will orbit closer to get a better look at the planet, while Japan’s Mio’s orbit is highly elliptical, to study the planet’s magnetic field.

During the journey to Mercury BepiColombo overcome several problems. First, the Covid panic threatened operations by limiting staffing and preventing normal behavior. Next the solar panels failed to produce the expected power, a problem that appears to still exist but which has not prevented operations. Finally, its thrusters produced less thrust than expected during a mid-course correction in 2024, causing an eleven month delay in arrival.

It is now however about to arrive. Let us hope that arrival proceeds as planned.

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More “Fluvial Processes” on Mars

12:59 pm

More fluvial processes on Mars
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on June 4, 2026 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The scientists label this “Fluvial processes inside crater,” an apt description based not only on the small section of the full image to the right, but on the full image itself. The entire surface of the crater floor’s western end appears filled with glacial material, in many places twisted and warped by past slow motion movements.

I picked out the area in the picture because of its particularly warped nature. It appears as if the material in the higher elevations to the upper right have been flowing downward, and in the process have pushed the glacial debris on the crater floor to the southwest.

It also appears that in the higher locations the near surface ice has been sublimating away, giving the surface a corroded look.
» Read more

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Bright spokes in Saturn’s rings

11:46 am

Bright spokes in Saturn's rings
Click for original image.

Cool image time! The picture to the right, cropped slightly to post here, was taken on December 26, 2008 from a distance of 350,000 miles by the Cassini spacecraft as it orbited Saturn. The resolution is about 37 miles per pixel.

I think sunlight is coming from the upper left, its light bouncing off the rings and thus making the those spokes bright and visible.

In the viewing geometry in which Cassini is looking approximately in the direction of the sun (called high phase), the spokes appear white against the rings because the very small particles comprising the spokes preferentially scatter light forward (in this case, toward Cassini).

At least that’s one theory for explaining the spokes that appear randomly and for only short periods within Saturn’s rings, sometimes bright, sometimes dark, depending on the angle of the Sun. According to a Hubble press release from 2023, the spokes are formed due to an interaction between Saturn’s magnetic field, the solar wind, and the tiny particles in the rings.

“The leading theory is that spokes are tied to Saturn’s powerful magnetic field, with some sort of solar interaction with the magnetic field that gives you the spokes,” said Simon. When it’s near the equinox on Saturn, the planet and its rings are less tilted away from the Sun. In this configuration, the solar wind may more strongly batter Saturn’s immense magnetic field, enhancing spoke formation.

Planetary scientists think that electrostatic forces generated from this interaction levitate dust or ice above the ring to form the spokes, though after several decades no theory perfectly predicts the spokes. [emphasis mine]

Just another strange alien phenomenon in space that remains unsolved. All we really know is that the spokes appear, remain visible for at most a rotation or two of the rings, and then disappear.

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