Genesis of blue lightning into the stratosphere detected from ISS

Dark clouds, the smell of rain on a hot sidewalk, the flashes of intense light followed by a loud crackling and then a low, rolling thunder—who doesn't love a good summer thunderstorm? We've all seen one, heard one, or ...

The stunning echo of 800-year-old explosion

In the year 1181 a rare supernova explosion appeared in the night sky, staying visible for 185 consecutive days. Historical records show that the supernova looked like a temporary "star" in the constellation Cassiopeia shining ...

NGC 4710 galaxy: Baffling boxy bulge (w/ Video)

(PhysOrg.com) -- Just as many people are surprised to find themselves packing on unexplained weight around the middle, astronomers find the evolution of bulges in the centres of spiral galaxies puzzling. A recent NASA/ESA ...

The rise and fall of the riskiest asteroid in a decade

Initial observations of an asteroid dubbed "2022 AE1" showed a potential Earth impact on 4 July 2023—not enough time to attempt deflection and large enough to do real damage to a local area should it strike.

Swarm explores a new feature of the northern lights

Thanks to social media and the power of citizen scientists chasing the northern lights, a new feature was discovered recently. Nobody knew what this strange ribbon of purple light was, so … it was called Steve.

Evolving Asteroid Starships project

A group of students and researchers at Delft University of Technology are designing a starship capable of keeping generations of crew alive as they cross the gulf between stars – and they've turned to ESA for the starship's ...

Donor star breathes life into zombie companion

ESA's Integral space observatory has witnessed a rare event: the moment that winds emitted by a swollen red giant star revived its slow-spinning companion, the core of a dead star, bringing it back to life in a flash of X-rays.

Saturn's famous hexagon may tower above the clouds

The long-lived international Cassini mission has revealed a surprising feature emerging at Saturn's northern pole as it nears summertime: a warming, high-altitude vortex with a hexagonal shape, akin to the famous hexagon ...

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