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La voile solaire : une histoire de science et de fiction

La voile solaire : une histoire de science et de fiction
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Scientists are developing a laser-powered SAIL they claim could allow us to reach Alpha Centauri

Scientists are developing a laser-powered SAIL to reach Alpha Centauri

Scientists are developing a laser-powered SAIL to reach Alpha Centauri Sam Tonkin For Mailonline © Provided by Daily Mail MailOnline logo It is our nearest star system and offers perhaps the best chance of finding alien life – but reaching Alpha Centauri with current technology would take thousands of years. The good news is scientists may just have found a way to get there in the space of a human lifetime. It involves a laser-powered sail they claim could one day allow us to travel 24 trillion miles and reach our closest stellar neighbour within 20 years. Scroll down for video The Alpha Centauri star system is 24 trillion miles (4.37 light years) away. 

Planet 5-7 times size of Earth found in the nearest star system?

Planet 5-7 times size of Earth found in the nearest star system? Planet 5-7 times size of Earth found in the nearest star system? Chethan Kumar | TNN | Feb 11, 2021, 22:30 IST Representative image Astronomers from Breakthrough Watch, the global astronomical programme looking for Earth-like planets around nearby stars say there’s an “intriguing possibility” of them having observed a planet roughly five to seven times the size of Earth orbiting within the habitable zone of the nearest sun-like star, just 4.37 light years away. Breakthrough Watch which has now announced a new observing technique with unprecedented sensitivity to directly image exoplanets says initial observations also resulted in the detection of a weak signal in the habitable zone of Alpha Centauri A, part of the star system nearest to Earth.

Astronomers detect mysterious radio signal coming from neighboring star

https://www.afinalwarning.com/483939.html (Natural News) Scientists from the search for extraterrestrial intelligence (SETI) are investigating a mysterious radio signal emanating from the direction of Proxima Centauri, the nearest star to the solar system. Researchers working on Breakthrough Listen, a project devoted to the search for alien civilizations, detected the signal in April or May this year using the Parkes radio telescope in Australia. They have since been hard at work deciphering its cause. Though it likely has a mundane explanation, the researchers are intrigued about the signal’s very peculiar nature. The beam, which has not been spotted again since its detection, appears to have come from Proxima Centauri. The red dwarf sits around 4.2 light-years from Earth and has two known planets orbiting it. Along with an apparent shift in the signal’s frequency, its direction may indicate the presence of a third planet or even hint at the existence of an advanced

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