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Astronomy Picture of the Day: Puzzling a Sky over Argentina

Image Credit & Copyright: Sergio Montúfar; Acknowledgement: Planetario Ciudad de La Plata / CASLEO observatory

Explanation: Can you find the comet? True, a careful eye can find thousands of stars, tens of constellations, four planets, three galaxies, and the central band of our Milky Way Galaxy -- all visible in the sky of this spectacular 180-degree panorama.

Also, if you know what to look for, you can identify pervasive green airglow, an earthly cloud, the south celestial pole, and even a distant cluster of stars. But these are all easier to find than Comet 252P/LINEAR.

The featured image, taken in el Leoncito National Park, Argentina in early April, also features the dome of the Jorge Sahade telescope on the hill on the far right. Have you found the comet yet? If so, good for you! It is the green spot on the left.

Astronomers at the University of Michigan discovered for the first time that the hot gas in the halo of the Milky Way galaxy is spinning in the same direction and at comparable speed as the galaxy’s disk, which contains our stars, planets, gas, and dust.

NASA Funded Research Leads Astronomers To Discover 'A First' About Milky Way Galaxy | Astronomers at the University of Michigan’s College of Literature, Science, and the Arts (LSA) discovered for the first time that the hot gas in the halo of the