Tag: science

China: Chang’e-6 collected more than four pounds of material from Moon

9:11 am

According to China’s state-run press today, its Chang’e-6 sample return mission collected 1,953.2 grams, more than four pounds, from the Aitkin Basin on the far side of the Moon.

Based on preliminary measurement, the Chang’e-6 mission collected 1,935.3 grams of lunar samples, according to the CNSA. “We have found that the samples brought back by Chang’e-6 were more viscous compared to previous samples, with the presence of clumps. These are observable characteristics,” Ge Ping, deputy director of the CNSA’s Lunar Exploration and Space Engineering Center, who is also the spokesperson for the Chang’e-6 mission, told the press at the ceremony.

Researchers will then carry out the storage and processing of the lunar samples as planned and initiate scientific research work.

If all goes as plans, they will be ready to begin distributing samples for study to Chinese researchers in about six months.

4 comments

Juno infrared data confirms existence of at least eleven lava lakes on Io

11:53 am

Cartoon describing Io's lava lakes
Click for original image.

Using infrared data from the Jupiter orbiter Juno, obtained during a close fly-by in May 2023 of the moon Io, scientists have identified what appear to be at least eleven active lava lakes, all filled with liquid magma under a surface crust and having a stable perimeter that apparently does not overflow the rim.

You can read the research paper here. The graphic to the right is figure 6 from the paper, describing two models for explaining why the lava in these lakes never rises high enough to pour out.

Unlike the April fly-by, which got as close as 10,777 miles and produced some amazing imagery, the May fly-by only got within 22,000 miles, but its course allowed Juno’s infrared instruments to collect good global data for six hours.

The JIRAM data reveal a common set of thermal characteristics for at least ten patera, with bright “thermal rings” around the perimeter of their floors. Loki, Surt, Fuchi, Amaterasu, Mulungu, Chors, and Dazhbog paterae, two unnamed paterae (here referred to as UP1 and UP2), and two other potential additional paterae (not discussed further because the spatial resolution is poor), all show the same pattern of surface temperatures.

That data suggested that each patera was a hot lava lake, with a stable rim in which little magma ever overflowed. As the scientists conclude in their paper, “Present findings highlight Io’s abundant lava reserves, resembling lava lakes on Earth in some ways, yet distinctly different from any other phenomena observed in the Solar System.” The scientists also note that no missions are being planned right now to get a better look at Io.

0 comments

Engineers revive instrument on Perseverance

10:41 am

Engineers in the Perseverance science team have successfully gotten a stuck cover moved so that it no longer blocked a camera and spectroscopic instrument mounted on the rover’s robot arm from gathering data.

The cover had gotten stuck partially closed in January 2024.

Analysis by the SHERLOC team pointed to the malfunction of a small motor responsible for moving the protective lens cover as well as adjusting focus for the spectrometer and the Autofocus and Context Imager (ACI) camera. By testing potential solutions on a duplicate SHERLOC instrument at JPL, the team began a long, meticulous evaluation process to see if, and how, the lens cover could be moved into the open position.

Among many other steps taken, the team tried heating the lens cover’s small motor, commanding the rover’s robotic arm to rotate the SHERLOC instrument under different orientations with supporting Mastcam-Z imagery, rocking the mechanism back and forth to loosen any debris potentially jamming the lens cover, and even engaging the rover’s percussive drill to try jostling it loose. On March 3, imagery returned from Perseverance showed that the ACI cover had opened more than 180 degrees, clearing the imager’s field of view and enabling the ACI to be placed near its target.

Because the cover could no longer be moved, focusing was no longer possible. They then had to use the robot arm to do a long sequence of careful focus tests to determine the best distance for sharp imagery, which was found to be about 1.58 inches.

As is usual for all Perseverance press releases from NASA, this one starts out with the lie that the purpose of this instrument is to “look for potential signs of ancient microbial life.” That is false. While finding such things would be possible with SHERLOC, its real purpose is to study close-up the geology of Mars. To claim its purpose is to look for microbial life is sheer blarney.

2 comments

Chang’e-6 sample return capsule opened in China

10:27 am

According to China’s state-run press, the return capsule carrying samples from the far side of the Moon was opened yesterday “during a ceremony at the China Academy of Space Technology under the China Aerospace Science and Technology Corporation in Beijing.”

No other details were released. The pictures at the link appear to show engineers removing an internal capsule from inside the return capsule, which makes sense. For many scientific reasons the actual samples must be kept sealed from the Earth’s atmosphere in order to make sure they are not contaminated. The actual lunar material will not be exposed and touched until it is placed inside a very controlled environment.

3 comments

An island of hundreds of scour pits in Mars’ largest volcanic ash field

2:05 pm

An island of scour pits
Click for original image.

Cool image time! The picture to the left, cropped, reduced, and sharpened to post here, was taken on April 25, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

It shows what the science team labels a “scour pit island,” an area about 13 miles long and 3.5 miles wide where the ground is covered by these pits.

Your eye may play tricks on you, reversing the elevations. These are all pits, with most having a central peak or ridgeline. To help, note that the sunlight is coming from the west. The arrow on the center left of the picture sits on a plateau above these pits.

According to this paper [pdf], the pits are slowly dug out by the wind coming from the southeast blowing to the northwest, as indicated by the arrows. The central peaks or ridges are thought to be a hint of the original topography, with the wind only able to pull ash from the terrain around these peaks.
» Read more

0 comments

More garbage science about wildfires and global warming from Nature

12:31 pm

Nature: the science journal that no longer does real science
The science journal which no longer
understands how real science is done

The once highly respected science journal Nature continues its descent into propaganda and bad science, all because it bows unskeptically before the altar of global warming and leftist science fantasies.

Today’s example is an article this week entitled “You’re not imagining it: extreme wildfires are now more common,” describing a new Nature paper that attempted to use satellite data to prove that the intensity of wildfires has increased in the past two decades.

For the current study, published in Nature Ecology and Evolution on 24 June, Cunningham and his colleagues scoured global satellite data for fire activity. They used infrared records to measure the energy intensity of nearly 31 million daily fire events over two decades, focusing on the most extreme ones — roughly 2,900 events. The researchers calculated that there was a 2.2-fold increase in the frequency of extreme events globally in 2003–23, and a 2.3-fold boost in the average intensity of the top 20 most intense fires each year.

We’re all gonna die! As is usual for these crap climate-related studies, the entire goal is to drum up some manufactured new crisis that justifies the claim that the climate is warming. This study is no different, as the article eagerly notes:

Although the study doesn’t directly connect the fire trend to global warming, Cunningham [the study’s lead author] says “there’s almost certainly a significant signal of climate change”. Research has shown that rising temperatures are drying out ecosystems — such as coniferous forests — that are naturally prone to fire. This provides fuel that can boost the fires’ size and longevity. The latest study also found that the energy intensity of the fires increased faster during the night-time over the past two decades than during the daytime, which aligns with evidence4 that rising night-time temperatures are contributing to fire risk.

Not surprisingly, the New York Times immediately jumped on the bandwagon with its own article that accepts the conclusions of this research with utter naivety.

What junk. First, Cunningham fails to note this minor fact mentioned in the abstract of his own paper:
» Read more

11 comments

Scientists surprised by new Webb data of the upper layers of Jupiter’s Great Red Spot

9:33 am

Jupiter's Great Red Spot, as seen in infrared
Click for original image.

The uncertainty of science: Using the Webb Space Telescope, scientists have obtained infrared data of the upper layers of Jupiter’s Great Red Spot, revealing that it is far more complicated that predicted by researchers.

The upper atmosphere of Jupiter is the interface between the planet’s magnetic field and the underlying atmosphere. Here, the bright and vibrant displays of northern and southern lights can be seen, which are fuelled by the volcanic material ejected from Jupiter’s moon Io. However, closer to the equator, the structure of the planet’s upper atmosphere is influenced by incoming sunlight. Because Jupiter receives only 4% of the sunlight that is received on Earth, astronomers predicted this region to be homogeneous in nature.

The Great Red Spot of Jupiter was observed by Webb’s Near-InfraRed Spectrograph (NIRSpec) in July 2022, using the instrument’s Integral Field Unit capabilities. The team’s Early Release Science observations sought to investigate if this region was in fact dull, and the region above the iconic Great Red Spot was targeted for Webb’s observations. The team was surprised to discover that the upper atmosphere hosts a variety of intricate structures, including dark arcs and bright spots, across the entire field of view.

You can read the published research paper here. The image to the right is figure 4 from that paper, with each panel showing different infrared wavelengths indicated by the different colors, and thus the complex structures and physical properties.

1 comment

Chang’e-6 brings back the first lunar samples from Moon’s far side

9:10 am

Engineers inspecting and opening Chang'e-6 return capsule
Engineers inspecting and opening Chang’e-6’s
sample return capsule after landing today.
Click for original image.

According to China’s state-run press, the sample return capsule of its Chang’e-6 lunar mission successfully landed today in the inner Mongolia region of China, bringing back the first lunar samples from Moon’s far side.

Under ground control, the returner separated from the orbiter approximately 5,000 km above the South Atlantic. The capsule entered the Earth’s atmosphere at about 1:41 p.m. at an altitude of about 120 km and a speed of nearly 11.2 km per second. After aerodynamic deceleration, it skipped out of the atmosphere and then began to glide downwards, before re-entering the atmosphere and decelerating for a second time.
At around 10 km above the ground, a parachute opened, and the returner later landed precisely and smoothly in the predetermined area, where it was recovered by a search team.

The returner is set to be airlifted to Beijing for opening, and the lunar samples will be transferred to a team of scientists for subsequent storage, analysis and study, said the CNSA. [emphasis mine]

The highlighted sentence is important. China has now successfully flown this atmospheric skip maneuver twice on returning from the Moon. Though both missions were unmanned, the technical knowledge gained from these flights is critical for their plans to send astronauts to the Moon in the next few years.

I have embedded China’s broadcast of the landing below. The sample capsule will now be carefully opened and the samples distributed first to Chinese scientists and later to China’s various partners in its lunar base project. The samples themselves came from a small mare region on the edge of Apollo Crater inside South Aitken Basin, one of the largest impact basins on the Moon. It is thus hoped that the samples were excavated from deep within the Moon during the impact, and will provide new data on the Moon’s make-up and history.
» Read more

6 comments

Are Chang’e-6’s lunar samples on the way back to Earth?

9:30 am

In Friday’s June 21, 2024 quick links, changes to lunar orbit of China’s Chang’e-6 sample return spacecraft were detected by ham operators. As I noted, “It isn’t clear whether this was the previous orbit adjustment, a new one, or the burn that would send the sample return capsule back to Earth.”

According to Space News today, the spacecraft with the samples is on its way back to Earth, based on additional information detected by amateurs. China however has released no information on the status of the spacecraft.

Upon return to Earth, the reentry capsule is expected to touch down at Siziwang Banner, Inner Mongolia during an half-an-hour long window opening at 1:41 a.m. Eastern (0541 UTC) June 25. The information is according to airspace closure notices. CNSA has not openly published timings of mission events in advance.

Earlier reports (which I can’t find now) had said the return was tentatively scheduled for June 25, 2024, so this Space News report makes sense. The lack of information from China is par for the course.

7 comments

China launches gamma-ray space telescope

9:50 am

China today successfully launched the Space-based Multi-band Variable Object Monitor (SVOM) gamma-ray space telescope, a 20-year-long joint Chinese-French project to monitor astronomical gamma ray bursts.

SVOM was placed in orbit by a Long March 2C rocket lifting off from China’s Xichang spaceport in the southwest of China. No word on where the rocket’s lower stages — which use very toxic hypergolic fuels — crashed inside China. UPDATE: See this video from China. Apparently one stage landed close to homes, spewing that orange hypergolic fuel.

The leaders in the 2024 launch race:

64 SpaceX
28 China
8 Russia
8 Rocket Lab

American private enterprise still leads the world combined in successful launches, 75 to 42, while SpaceX by itself still leads the entire world, including other American companies, 64 to 53.

6 comments

2,000-year-old wine found in Roman tomb

9:47 am

According to tests done on a liquid found in an urn in a Roman tomb discovered in Spain in 2019, that liquid is an ancient white wine that likely came from that region.

As part of that ritual, the skeletal remains of one of the men were immersed in a liquid inside a glass funerary urn. This liquid, which over time has acquired a reddish hue, has been preserved since the first century AD, and a team with the Department of Organic Chemistry at the University of Cordoba, led by Professor José Rafael Ruiz Arrebola, in collaboration with the City of Carmona, has identified it as the oldest wine ever discovered, thus topping the Speyer wine bottle discovered in 1867 and dated to the fourth century AD, preserved in the Historical Museum of Pfalz (Germany).

It is unclear from the report whether anyone has actually tasted the wine, which even if drinkable is tainted by the bones and the cremated ashes of that one individual.

3 comments

Astronomers see a quiet galaxy become active for the first time

9:46 am

Using a number of space- and ground-based telescopes, astronomers have for the first time seen in real time what had previously been a very inactive and quiet galaxy become active and energetic, suggesting a major event at the galaxy’s center had taken place to change its behavior.

From the abstract of the paper [pdf]:

We conclude that the variations observed in SDSS1335+0728 could be either explained by a ∼ 10 6 M ⊙ AGN [a one million solar mass black hole] that is just turning on or by an exotic tidal disruption event (TDE). If the former is true, SDSS1335+0728 is one of the strongest cases of an AGN observed in the process of activating. If the latter were found to be the case, it would correspond to the longest and faintest TDE ever observed (or another class of still unknown nuclear transient). Future observations of SDSS1335+0728 are crucial to further understand its behaviour.

As noted in the press release:

Some phenomena, like supernova explosions or tidal disruption events — when a star gets too close to a black hole and is torn apart — can make galaxies suddenly light up. But these brightness variations typically last only a few dozen or, at most, a few hundreds of days. SDSS1335+0728 is still growing brighter today, more than four years after it was first seen to ‘switch on’. Moreover, the variations detected in the galaxy, which is located 300 million light-years away in the constellation Virgo, are unlike any seen before.

If the central black hole is switching from being quiet to active, this galaxy is providing astronomers critical information for understanding such changes. This is particularly important to us here in the Milky Way, which has a very inactive central supermassive black hole weighing about 4 million solar masses. It would be very useful to understand what would cause it to become active, especially because such an event might even have an impact — possibly negative — throughout our entire galaxy.

5 comments
1 … 72 73 74 75 76 … 729