Science & Technology
Mars rover data confirms ancient lake sediments on red planet
NASA's rover Perseverance has gathered data confirming the existence of ancient lake sediments deposited by water that once filled a giant basin on Mars called Jerezo Crater, according to a study published on Friday.
The findings from ground-penetrating radar observations conducted by the robotic rover substantiate previous orbital imagery and other data leading scientists to theorize that portions of Mars were once covered in water and may have harbored microbial life, Reuters reported.
The research, led by teams from the University of California at Los Angeles (UCLA) and the University of Oslo, was published in the journal Science Advances, opens new tab.
It was based on subsurface scans taken by the car-sized, six-wheeled rover over several months of 2022 as it made its way across the Martian surface from the crater floor onto an adjacent expanse of braided, sedimentary-like features resembling, from orbit, the river deltas found on Earth.
Soundings from the rover's RIMFAX radar instrument allowed scientists to peer underground to get a cross-sectional view of rock layers 65 feet (20 meters) deep, "almost like looking at a road cut," said UCLA planetary scientist David Paige, the first author of the paper.
Those layers provide unmistakable evidence that soil sediments carried by water were deposited at Jerezo Crater and its delta from a river that fed it, just as they are in lakes on Earth. The findings reinforced what previous studies have long suggested - that cold, arid, lifeless Mars was once warm, wet and perhaps habitable.
Scientists look forward to an up-close examination of Jerezo's sediments - thought to have formed some 3 billion years ago - in samples collected by Perseverance for future transport to Earth.
In the meantime, the latest study is welcome validation that scientists undertook their geo-biological Mars endeavor at the right place on the planet after all.
Remote analysis of early core samples drilled by Perseverance at four sites close to where it landed in February 2021 surprised researchers by revealing rock that was volcanic in nature, rather than sedimentary as had been expected.
The two studies are not contradictory. Even the volcanic rocks bore signs of alteration through exposure to water, and scientists who published those findings in August 2022 reasoned then that sedimentary deposits may have eroded away.
Indeed, the RIMFAX radar readings reported on Friday found signs of erosion before and after the formation of sedimentary layers identified at the crater's western edge, evidence of a complex geological history there, Paige said.
"There were volcanic rocks that we the landed on," Paige said. "The real news here is that now we've driven onto the delta and now we're seeing evidence of these lake sediments, which is one of the main reasons we came to this location. So that's a happy story in that respect."
Science & Technology
Russia fines Google more than the world’s total GDP over YouTube bans
Russia has fined Google $2.5 decillion after the US tech giant took action against pro-Kremlin TV channels on YouTube following Moscow’s invasion of Ukraine.
Russia imposed a daily fine four years ago - a fine that has since swelled to an unprecedented level - ($20,000,000,000,000,000,000,000,000,000,000,000 - a 33-digit figure).
To put this into perspective, global GDP reaches an estimated $110 thousand billion (12-digit figure), according to the IMF.
Speaking to Russia’s TASS news agency, one expert, Roman Yankovsky from the HSE Institute of Education, said Google “clearly will not pay this penalty, and the Russian Federation will not be able to recover this money from the company."
Euronews reported that a short calculation shows that he is right.
Google's holding company, Alphabet, has a market capitalisation of slightly more than $2 trillion. Even with earnings of $80.54 billion from the last quarter, the tech giant doesn’t seem to be able to afford to pay the fine.
Google first barred pro-Moscow channel Tsargrad TV, which is owned by oligarch Konstantin Malofeev, four years ago.
At the time, Google was fined a daily penalty of 100,000 roubles and warned that amount would double every 24 hours if it went unpaid.
The original fine has been compounded by further penalties after Google eventually blocked a total of 17 Russian TV channels as a result of international sanctions, The Telegraph reported.
The tech giant now owes a staggering $2.5 decillion.
Science & Technology
Apple launches new iPad mini with AI features
Apple said it would roll out the first set of AI features in the U.S. version of the English language this month through a software update with iPadOS 18.1.
Apple on Tuesday launched its new generation of the iPad mini packed with AI features including writing tools and an improved Siri assistant, as the iPhone maker races to boost its devices with artificial-intelligence capabilities, Reuters reported.
The new iPad mini is powered by Apple's A17 Pro chip, which is used in the iPhone 15 Pro and Pro Max models. With a six-core central processing unit, the A17 Pro would boost CPU performance by 30% compared to the current generation iPad minis and is central to running Apple Intelligence, Apple's AI software.
Apple said it would roll out the first set of AI features in the U.S. version of the English language this month through a software update with iPadOS 18.1.
The features will be available for iPads with A17 Pro or M1 chips and later generations, Apple said, adding it will roll out additional features including image-generation tools, Genmoji and ChatGPT-powered capabilities over the next several months, read the report.
Apple in September unveiled its long-awaited, AI-boosted iPhone 16 lineup, but with the AI features still in test mode, the company failed to excite some investors while early sales data raised some questions around demand.
Still, research firm Canalys on Monday said the iPhone 16 would help Apple's sales in the fourth quarter and drive momentum into the first half of 2025, after Apple reached a record high third-quarter shipments.
The iPad mini, starting at $499, is available for pre-orders starting on Tuesday and will begin arriving to customers and Apple store locations next week, Apple said.
Science & Technology
Iran sends satellites to Russia for rocket launch
In September, Iran carried out its second satellite launch this year using a rocket built by its Revolutionary Guards
Iran has sent two locally made satellites to Russia to be put into orbit by a Russian space vehicle, the semi-official news agency Tasnim reported on Saturday, in the latest space cooperation between the two U.S.-sanctioned countries.
The development of Kowsar, a high-resolution imaging satellite, and Hodhod, a small communications satellite, is the first substantial effort by Iran's private space sector, the report said.
Russia sent Iranian satellites into orbit in February and in 2022, when U.S. officials voiced concern over space cooperation between Russia and Iran, fearing the satellite will not only help Russia in Ukraine but also help Iran monitor potential military targets in Israel and the wider Middle East, Reuters reported.
Kowsar could be used in agriculture, natural resource management, environmental monitoring, and disaster management, Tasnim said.
Hodhod is designed for satellite-based communications and could be used in remote areas with little access to terrestrial networks.
In September, Iran carried out its second satellite launch, this year using a rocket built by its Revolutionary Guards.
The launch came as the United States and European countries accuse Tehran of transferring ballistic missiles to Russia that could be used in its war with Ukraine. Iran has denied this.
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