Scientists have discovered complex organic molecules within the icy plume erupting from Saturn's moon Enceladus, strengthening the case that its hidden saltwater ocean may harbor the conditions for life. The Guardian reports: The sixth largest of Saturn's moons, Enceladus has become one of the leading contenders in the search for bodies that could harbor extraterrestrial life, with the Cassini mission -- which ended in 2017 -- revealing the moon has a plume of water ice grains and vapors erupting from beneath the surface at its south pole. The phenomenon has since been captured by the James Webb space telescope, with the plume reaching nearly 6,000 miles into space. The source of this material is thought to be a saltwater ocean that lies beneath the moon's icy crust.

Now researchers studying data from the Cassini mission say they have discovered organic substances within the plume, with some types of molecule detected there for the first time. Dr Nozair Khawaja, a planetary scientist at Freie University Berlin and lead author of the work, said the results increased the known complexity of the chemistry that is happening below the surface of Enceladus. "When there is complexity happening, that means that the habitable potential of Enceladus is increasing right now," he said. Writing in the journal Nature Astronomy, Khawaja and colleagues reported how their previous work had revealed the presence of organic substances and salts within ice grains found in a ring of Saturn, known as the "E-ring," that is composed of material ejected from Enceladus. [...]

While the new findings do not show that there is life on Enceladus, Khawaja said they indicate there are complex chemical pathways at play that could lead to the formation of substances that could be biologically relevant. The results, he added, support plans by the European Space Agency (ESA) to investigate the moon for signs of life. "I think all the signals are green here for Enceladus," Khawaja said. The findings add momentum to ESA's proposed mission to directly search for biological signs around 2042. According to the ESA, the mission will consist of an orbiter around Enceladus that will also fly through the plumes, as well as a lander that will touch down in the south pole region of the moon.

Raspberry Pi has launched the Raspberry Pi 500 Plus for $200, more than doubling the $90 price of the standard model. The keyboard computer now includes an M.2 2280 SSD socket alongside the SD card slot, 256GB of storage and 16GB of LPDDR4x-4267 RAM instead of 8GB. The company added Gateron KS-33 Blue mechanical switches, replaceable low-profile keycaps finished to allow RGB lighting to shine through and an RP2040 microcontroller running QMK firmware.

The 500 Plus retains Wi-Fi 5, Bluetooth, gigabit Ethernet, two micro HDMI ports, three USB-A ports, and USB-C power from the base model. A $220 Desktop Kit bundles necessary cables, power supply, and mouse.

The Apache Software Foundation has unveiled a major branding overhaul that retires its three-decade-old feather logo after criticism from Native American activists. In its place is a new oak leaf design to symbolize endurance, resilience, and global reach. Along with the new visual identity, the group will emphasize "The ASF" as its shorthand name while keeping its full legal title intact.

Apache.org explained: "The oak is one of the most enduring trees and is found around the world. It grows slowly but steadily, supporting vast ecosystems and lasting for centuries. In the same way, The ASF has served as a stable, resilient steward of open source for more than 25 years and is looking to the long future ahead. Choosing the oak leaf as our new logo represents the enduring power of our ethos: community over code."

Physicists have confirmed Stephen Hawking's 1971 black hole area theorem with near-absolute certainty, thanks to gravitational waves from an exceptionally loud black hole collision detected by upgraded LIGO instruments. New Scientist reports: Hawking proposed his black hole area theorem in 1971, which states that when two black holes merge, the resulting black hole's event horizon -- the boundary beyond which not even light can escape the clutches of a black hole -- cannot have an area smaller than the sum of the two original black holes. The theorem echoes the second law of thermodynamics, which states that the entropy, or disorder within an object, never decreases.

Black hole mergers warp the fabric of the universe, producing tiny fluctuations in space-time known as gravitational waves, which cross the universe at the speed of light. Five gravitational wave observatories on Earth hunt for waves 10,000 times smaller than the nucleus of an atom. They include the two US-based detectors of the Laser Interferometer Gravitational-Wave Observatory (LIGO) plus the Virgo detector in Italy, KAGRA in Japan and GEO600 in Germany, operated by an international collaboration known as LIGO-Virgo-KAGRA (LVK).

The recent collision, named GW250114, was almost identical to the one that created the first gravitational waves ever observed in 2015. Both involved black holes with masses between 30 and 40 times the mass of our sun and took place about 1.3 billion light years away. This time, the upgraded LIGO detectors had three times the sensitivity they had in 2015, so they were able to capture waves emanating from the collision in unprecedented detail. This allowed researchers to verify Hawking's theorem by calculating that the area of the event horizon was indeed larger after the merger. The findings have been published in the journal Physical Review Letters.

Germany has already met its 2028 goal for reducing coal-fired power generation, so won't need to order the shutdown of any plants for a second year running, the country's regulator said. From a report: Germany has an interim 2028 target of reducing coal-fired power by 8.7 gigawatts, and as of Sept. 1 it had exceeded this level by about 10%, the Federal Network Agency said on its website on Monday.

Almost two thirds of Germany's electricity comes from renewables and excess solar power production has frequently pushed prices below zero, making burning coal less profitable. Yet Europe's largest economy remains heavily dependent on the fossil fuel and is still the European Union's biggest polluter.