stellar evolution

A Protostar’s Age Gleaned Only From Sound Waves

by Shannon Hall July 5, 2014

Want to stay on top of all the space news? Follow @universetoday on Twitter Precisely dating a star can have important consequences for understanding stellar evolution and any circling exoplanets. But it’s one of the toughest plights in astronomy with only a few existing techniques. One method is to find a star with radioactive elements […]

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Astronomers Find Evidence of a Strange Type of Star

by Jason Major June 4, 2014

One has never been spotted for sure in the wild jungle of strange stellar objects out there, but astronomers now think they have finally found a theoretical cosmic curiosity: a Thorne-Zytkow Object, or TZO, hiding in the neighboring Small Magellanic Cloud. With the outward appearance of garden-variety red supergiants, TZOs are actually two stars in […]

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Stars Boil Before They Blow Up, Says NuSTAR

by Jason Major February 19, 2014

Supernovas are some of the most energetic and powerful events in the observable Universe. Briefly outshining entire galaxies, they are the final, dying  outbursts of stars several times more massive than our Sun. And while we know supernovas are responsible for creating the heavy elements necessary for everything from planets to people to power tools, […]

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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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Dazzling New Views of a Familiar Cluster

by David Dickinson February 19, 2014

Wow. It’s always amazing to get new views of familiar sky targets. And you always know that a “feast for the eyes” is in store when astronomers turn a world-class instrument towards a familiar celestial object. Such an image was released this morning from the European Southern Observatory (ESO). Astronomers turned ESO’s 2.2-metre telescope towards […]

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