Blue blobs hover over Earth in Nasa photos but there's a scientific explanation

Blue blobs hover over Earth in Nasa photos but there’s a scientific explanation – it’s just not immediately obvious

NASA has revealed mind-blowing images of bizarre blue blobs floating over Earth.

The scenes may look like something out of science fiction but there are two phenomena that can explain the strange images.Nasa's Earth Observatory re-posted the images after they were taken last year. It previously explained: "An astronaut onboard the International Space Station took this photograph while orbiting over Southeast Asia and looking toward Earth’s limb."The big alien-like blob in the center is actually lightning.Lightning strikes are usually hard to see from the ISS but this huge one occurred through a perfectly timed gap in the clouds.A trick of light also helps the Moon to look like an odd blue blob in the image.

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