Scientists have found another aurora here on Earth — but unlike the better known Northern Lights, this one doesn't put on a show for humans.
. This orbiter launched all the way back in 2002, and has been collecting data about Earth since.
Observing auroras from space has some distinct advantages; from the ground, scientists can't see auroras during the daylight, and they're limited in how much of the sky any one telescope can cover. AIRS, on the other hand, has been observing infrared energy — including that from the aurora — every day for years. This data set covers over 20 years, and will be invaluable to future studies of the aurora.
Auroras are an important window into Earth's atmosphere for scientists, and there's still a lot we don't know about how the cosmic environment interacts with the upper layers of our atmosphere. Studies like this give scientists a better picture of"when and where auroral activity is happening," says Öztürk. They're also trying to figure out"just how far energetic particles can make it into Earth's atmosphere," says Bossert. It's still unknown how the carbon dioxide aurora varies with seasons, too, which may relate to fluctuations in the levels of carbon dioxide in the atmosphere.
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