It may look identical to the spirograph patterns created by children - but in fact this incredible image shows the path of a space telescope. It shows NASA's Fermi Gamma-ray Space Telescope, which ...

NASA's Fermi Gamma-ray Space Telescope orbits our planet every 95 minutes, building up increasingly deeper views of the universe with every circuit. Its wide-eyed Large Area Telescope sweeps across ...

Subscribe to our newsletter for the latest sci-tech news updates. Expanding shells of gas and dust that have been ejected from a star during the process of its evolution from a main sequence (MS) star ...

Some 2,000 light-years from Earth, an elderly star has ejected its puffy outer layers to form a luminous, jewel-like ball of gas. Set aglow by ultraviolet radiation pouring out from the core of the ...

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