Science & Technology
China launch of relay satellite Queqiao-2 for lunar probe mission successful

China National Space Administration (CNSA) said on Friday its launch of a key signal relay satellite was a “complete success” and it would serve as the communication bridge for its future lunar probe missions for years to come, state media reported.
China launched the satellite Queqiao-2, which was named after a mythological bridge made of magpies, and two miniature satellites, Tiandu-1 and Tiandu-2, on March 20.
Queqiao-2 will be used as a communications bridge between the ground operations on earth and upcoming lunar probe missions on the far side of the moon until at least 2030.
The moon’s near side always faces earth. That means data transfers from the far side are impossible because there is no direct line of sight.
Queqiao-2 researcher and developer Xiong Liang described the satellite as “the main switch” of the whole fourth phase of lunar missions, according to state television CCTV.
“Only when the main switch is flipped on, all the communications can kick off,” Xiong said.
Queqiao-2 will orbit the moon and relay signals to and from the Chang’e-6 mission, which expected to be launched in May. The robotic Chang’e-6 probe will seek to retrieve samples from an ancient basin, acquiring lunar material from the moon’s hidden side for the first time.
Queqiao-2 will also be used as a relay platform for the Chang’e-7 lunar mission in 2026 and the Chang’e-8 mission in 2028.
The functions and performance of Queqiao-2 met mission requirements and it will be able to provide relay communication services for China’s lunar exploration projects and future lunar missions for China and other countries, said the CNSA, according to CCTV.
Queqiao-2 entered its targeted elliptical orbit on April 2 after a correction midway, near-moon braking and orbital manoeuvre around the moon, CNSA said.
The satellite has successfully communicated with Chang’e 4, which was the first spacecraft to perform a soft landing on the far side of the moon and is still carrying out its exploration mission. It also communicated with the Chang’e-6 probe while it is still on the ground earlier this month.
The successful launch of Queqiao-2 comes after the failed launch of another lunar spacecraft DRO-A/B satellites, which was intended to enter the moon’s distant retrograde orbit (DRO).
China has not released any information on whether or not the satellites can be retrieved.
(Reuters)
Science & Technology
‘Massive cyberattack’ brings down Elon Musk’s X
Digital Trends reported Tuesday that there are reports suggesting X is still having issues

Social media platform X went down intermittently on Monday, with owner Elon Musk blaming an unusually powerful cyberattack.
“We get attacked every day, but this was done with a lot of resources. Either a large, coordinated group and/or a country is involved,” Musk said in a post on X on Monday.
He did not clarify exactly what he meant by “a lot of resources” and his comments drew skepticism from cybersecurity specialists, who pointed out that attacks of this nature — called denials of service — have repeatedly been executed by small groups or individuals.
X faced intermittent outages, according to Downdetector, Reuters reported.
Digital Trends meanwhile reported Tuesday that there are reports suggesting X is still having issues.
Internet industry experts have said X was hit by several waves of ‘denial of service’ throughout Monday.
Musk said in an interview with Fox Business Network’s Larry Kudlow the cyberattack came from IP addresses originating in the Ukraine area.
An industry source told Reuters he disputed Musk’s account, saying that large chunks of the rogue traffic bombarding X could be traced back to IP addresses in the United States, Vietnam, Brazil and other countries, and that the amount of rogue traffic coming directly from Ukraine was “insignificant.”
In any case, denial of service attacks are notoriously hard to trace back to their authors and the IP addresses involved rarely provide any meaningful insight into who was behind them, Reuters reported.
Musk has joined U.S. President Donald Trump, whom he serves as an adviser, in criticizing Ukraine’s continued efforts to fight off a Russian invasion.
Musk said on Sunday that Ukraine’s front line “would collapse” without his Starlink satellite communications service, though he said he would not cut off Ukraine’s access to it.
Science & Technology
NASA says ‘city killer’ asteroid has a 3.1 % chance of striking Earth in 2032
Despite the rising odds, experts say there is no need for alarm

An asteroid that could level a city now has a 3.1-percent chance of striking Earth in 2032, according to NASA data released Tuesday — making it the most threatening space rock ever recorded by modern forecasting.
Despite the rising odds, experts say there is no need for alarm. The global astronomical community is closely monitoring the situation and the James Webb Space Telescope is set to fix its gaze on the object, known as 2024 YR4, next month.
“I’m not panicking,” Bruce Betts, chief scientist for the nonprofit Planetary Society told AFP.
“Naturally when you see the percentages go up, it doesn’t make you feel warm and fuzzy and good,” he added, but explained that as astronomers gather more data, the probability will likely edge up before rapidly dropping to zero.
2024 YR4 was first detected on December 27 last year by the El Sauce Observatory in Chile.
Astronomers estimate its size to be between 130 and 300 feet (40–90 meters) wide, based on its brightness. Analysis of its light signatures suggests it has a fairly typical composition, rather than being a rare metal-rich asteroid.
The International Asteroid Warning Network (IAWN), a worldwide planetary defense collaboration, issued a warning memo on January 29 after the impact probability had crossed one percent. Since then, the figure has fluctuated but continues to trend upward.
NASA’s latest calculations estimate the impact probability at 3.1 percent, up from 1.6 percent last month, with a potential Earth impact date of December 22, 2032.
Richard Moissl, head of the European Space Agency’s planetary defense office, which puts the risk slightly lower at 2.8 percent told AFP that this “is not a crisis at this point in time. This is not the dinosaur killer. This is not the planet killer. This is at most dangerous for a city.”
If the risk rises over 10 percent, IAWN would issue a formal warning, leading to a “recommendation for all UN members who have territories in potentially threatened areas to start terrestrial preparedness,” explained Moissl.
Unlike the six-mile-wide (10-kilometer-wide) asteroid that wiped out the dinosaurs 66 million years ago, 2024 YR4 is classified as a “city killer” — not a global catastrophe, but still capable of causing significant destruction.
Its potential devastation comes less from its size and more from its velocity, which could be nearly 40,000 miles per hour if it hits.
If it enters Earth’s atmosphere, the most likely scenario is an airburst, meaning it would explode midair with a force of approximately eight megatons of TNT — more than 500 times the power of the Hiroshima bomb.
But an impact crater cannot be ruled out if the size is closer to the higher end of estimates, said Betts.
The potential impact corridor spans the eastern Pacific, northern South America, the Atlantic, Africa, the Arabian Peninsula, and South Asia — though Moissl emphasized it is far too early for people to consider drastic decisions like relocation.
The good news: there’s ample time to act.
NASA’s 2022 DART mission proved that spacecraft can successfully alter an asteroid’s path, and scientists have theorized other methods, such as using lasers to create thrust by vaporizing part of the surface, pulling it off course with a spacecraft’s gravity, or even using nuclear explosions as a last resort. — Agence France-Presse
Science & Technology
Panjshir will soon be connected to national fiber optic network
The statement said that this project covers a 36-kilometer route from Gulbahar to Bazarak, and the districts of Shatal, Anaba and Rukha will also benefit from fiber optic services.

The Panjshir provincial media office said in a statement on Wednesday, February 1 that practical work was to connect the province to fiber optic will begin within the next month.
The statement said that this project covers a 36-kilometer route from Gulbahar to Bazarak, and the districts of Shatal, Anaba and Rukha will also benefit from fiber optic services.
The statement added that the project is being implemented by Afghan Wireless, Afghan Telecom and ICG companies as a result of the efforts of the Panjshir provincial administration and the special attention of the leadership of the Ministry of Communications and Information Technology of the Islamic Emirate of Afghanistan.
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