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Submission + - Dwarf planet Eris is bereft of atmosphere, about t (arstechnica.com)

derGoldstein writes: Ars has an article up discussing new measurements of Eris, the largest dwarf planet in our solar system: "New measurements are suggesting that Eris may actually be more like Pluto’s twin. The newly measured radius of Eris puts it within the error range of the accepted size of Pluto. ... Scientists were able to get a better handle on the size of Eris by observing it as it passed in front of a background star, a technique called stellar occultation. By observing how long Eris obscures the star (given how fast it is moving), you can determine the width of Eris at that point."

Submission + - Astronomers near capturing star's moment of death (digitaltrends.com)

derGoldstein writes: From DigitalTrends: "An amateur astronomer recently discovered what has been confirmed to be one of the best looks yet at a planetary nubula, the last, gassy breath of a dying star. The nebula, named Kronenberger 61 after the enthusiast who discovered it, will offer insights into the future and death of our own sun."

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