Although Voyager probes left our solar system years ago, as they traveled through international space, they are still searching for cosmic rays exploding 23 billion kilometers (14 billion miles) away from our sun. A detailed analysis of recent data from both Voyager 1 and Voyager 2 has now led to …
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Dying giant star, not a peaceful event. It explodes its outer material in a tremendous explosion, irradiating the space with high-energy gamma radiation for many years. The empty space is not just exposed to this radiation. New research suggests that ancient trees on Earth may have evidence of celestial explosions. …
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For more than two decades, astronomers have been systematically searching for mysterious sources of high-energy gamma rays in their sources. One, however, remained stubborn – the most unknown source gamma rays in the galaxy. It appears to be 2,740 light-years away from the binary system, but only one star could …
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About 15,000 light-years away, an active black hole periodically appears to illuminate another unremarkable cloud of gas with gamma rays. But there is a catch. The gas cloud is about 100 light-years from the black hole – and just how the cloud pulsates with it in time is a mystery. …
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