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An unknown source has been sending radio blasts towards Earth since at least 1988, scientists say. The researchers do not know what object is sending the radio waves towards Earth. The nature of the waves is such that they do not conform with any models that attempt to explain it. For 35 years, the source has been sending out regular 20-minute blasts of energy that vary considerably in their brightness, researchers say. The emissions appear something like the blasts that come out of pulsars or fast radio bursts, which last for milliseconds to several seconds. But the newly discovered source sends radio signals that pulsate on a period of 21 minutes – something previously thought impossible by expected explanations. Pulsars are neutron stars that spin around quickly, throwing out radio blasts as they do. When one crosses Earth, the emissions can be picked up very briefly and brightly, like being in the path of the light from a rotating lighthouse. Scientists believe that process can only work if the magnetic field of the pulsar is strong, and it is rotating quickly enough – if not, there would not be enough energy to see the pulsar from Earth. That has led to the development of the “pulsar death line”, which suggests that sources must be spinning fast and strong enough to be detected. The newly discovered object named GPMJ1839-10, however, is way beyond that death line. If it is a pulsar, then it seems to be operating in ways that scientists thought impossible. It could also be a highly magnetised white dwarf or magnetar, an extra kind of neutron star with incredibly strong magnetic fields. But they do not tend to send out emissions of this kind, researchers believe. The signals have been detected on Earth since at least 1988, scientists found by going through old records, but they had gone unnoticed by those collecting that data. After the source was detected, researchers checked radio archives and found that the source has been repeating for at least 35 years. Yet more discoveries may be made in this way in the future, said Victoria M Kaspi, a professor of physics at McGill University who did not work on the study. “Only time will tell what else lurks in these data, and what observations across many astronomical timescales will reveal,” she wrote in an accompanying article. That might include some explanation of how unusual the newly discovered source is. By examining whether there are is a similar collection of other objects in the data, researchers might be able to understand the mechanisms behind the newly discovered emissions. The findings are reported in a new paper, ‘A long-period radio transient active for three decades’, published in the journal Nature. Read More Scientists invent self-healing solar panels with ‘miracle material’ Powerful solar flare to disrupt communications, Russians warn New technique represents major breakthrough in search for aliens, scientists say

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A battery startup is aiming to be the first company in the world to mass produce electric vehicle batteries with a range of 1,000km – roughly double the current standard. China-based Gotion High Tech, which is a supplier to Volkswagen, unveiled its new L600 LMFP Astroinno battery at its annual technology conference, claiming that mass production will begin in 2024. The lithium-manganese-iron-phosphate (LMFP) battery has already passed all necessary safety tests, the company said, and has a life cycle of 4,000 charge-discharge cycles – making it suitable for everyday electric cars. The 1,000km range from a single charge gives the battery a potential lifetime range of 4 million kilometres, far exceeding the average lifespan of a car. Its single-charge range is also equivalent to records set by customised electric prototypes, such as the Mercedes-Benz Vision EQXX that broke a range record by travelling from Germany to the UK on a single charge last year. It took 10 years of in-house research to make the technology commercially viable, using new electrolyte additives and state-of-the-art technology to overcome previous issues with this type of battery. Until now, LMFP materials have suffered low conductivity, low compaction density and manganese dissolution at high temperatures, meaning they were too inefficient and unwieldy to use in EVs. Despite these challenges, the enormous potential of the technology has drawn the attention of researchers and industry watchers. “In recent years, lithium iron phosphate (LFP) technology has regained the recognition of the market with market share continuing to increase,” said Dr Cheng Qian, executive president of the International Business Unit of Gotion High-Tech. “Meanwhile, the energy density growth of mass-produced LFP batteries has encountered bottlenecks, and further improvement requires an upgrade of the chemical system, so [our system] was developed.” The company also made other breakthroughs with the battery’s design, which reduced the number of structural parts by 45 per cent and lowered their weight by nearly a third. Wiring for the battery pack has also dropped from 303 metres to just 80 metres thanks to the innovative design. It is not clear which vehicles the battery will first appear in, though Gotion High Tech is planning a $2.3 billion battery factory in the US. Read More Solar panel efficiency to increase 50% with first production of ‘miracle’ tandem cells Apple is making a ‘mixed reality’ headset. Here’s what that future might look like WhatsApp will let people change messages after they are sent ‘RIP photoshop’: New AI can alter any photo with the click of a mouse

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