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Surprising Cocoons Found Enveloping Giant Stars

Surprising Cocoons Found Enveloping Giant Stars
Two model images of the Cepheid star L Carinae as deduced from the interferometric observations: in the near-infrared from VINCI measurements (left) and in the mid-infrared from MIDI (right). In both cases, an envelope is found to surround the star. The contribution from the envelope is about 5 percent in the near-infrared and significantly more in the thermal infrared. As L Carinae is 17,000 times brighter than the Sun, this means that its envelope alone is several hundred times brighter than our Sun. (Image credit: ESO)



The cocoons


Most stars


"Are they


Most stars have a life cycle that starts with some 5 billion years or more



L Carinae

The finding


Incredibly sensitive instruments are required to

Now that

"There are

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