New VLT Observations Clear Up Dusty Mystery

by Shannon Hall July 11, 2014

Want to stay on top of all the space news? Follow @universetoday on Twitter The Universe is overflowing with cosmic dust. Planets form in swirling clouds of dust around a young star; Dust lanes hide more-distant stars in the Milky Way above us; And molecular hydrogen forms on the dust grains in interstellar space. Even […]

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Which Star Will Explode Next?

by Fraser Cain March 17, 2014

Come on Betelguese, explode already. Or maybe it’ll be Eta Carinae. Which of the billions of stars in the galaxy can we count on to explode next, and when? When a new supernova is discovered, we can take that as a reminder that we live in a terribly hostile Universe. Sometimes stars just explode, and […]

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Astronomy Cast Ep. 337: Photometry

by Fraser Cain March 10, 2014

There’s a lot you can learn by just staring at an object, watching how it changes in brightness. This is the technique of photometry, and it has helped astronomers discover variable stars, extrasolar planets, minor planets, supernovae, and much more. Remove this ad Fraser Cain on Google+

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Is Eta Carinae Heading Toward Another Eruption?

by Shannon Hall February 19, 2014

Massive stars can devastate their surroundings, unleashing hot winds and blasting radiation. With a mass over 100 times heavier than the Sun and a luminosity a million times brighter than the Sun, Eta Carinae clocks in as one of the biggest and brightest stars in our galaxy. The enigmatic object walks a thin line between […]

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Will The Sun Explode?

by Fraser Cain January 6, 2014

All stars die, some more violently than others. Once our own Sun has consumed all the hydrogen fuel in its core, it too will reach the end of its life. Astronomers estimate this to be a short 7 billion years from now. For a few million years, it will expand into a red giant, puffing […]

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