22
Dec 13

J075141 and J174140: Doubling Down With Rare White Dwarf Systems

Source: Chandra

The shortened names of a system that will evolve into a rare class of binary stars in the future.

In the middle of the twentieth century, an unusual star was spotted in the constellation of Canes Venatici (Latin for "hunting dogs"). Years later, astronomers determined that this object, dubbed AM Canum Venaticorum (or, AM CVn, for short), was, in fact, two stars. These stars revolve around each other every 18 minutes, and are predicted to generate gravitational waves - ripples in space-time predicted by Einstein. (learn more)

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22
Dec 13

RS Puppis puts on a spectacular light show

Credits: ESA/Hubble heic1323

heic1323a

The NASA/ESA Hubble Space Telescope has observed the variable star RS Puppis over a period of five weeks, showing the star growing brighter and dimmer as it pulsates. These pulsations have created a stunning example of a phenomenon known as a light echo, where light appears to reverberate through the murky environment around the star.(read more)

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