The first detection of helium in an exoplanet’s atmosphere

Astronomers have finally detected helium in the air of an alien world — and there’s apparently plenty of it.

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Tau.Neutrino said:

The first detection of helium in an exoplanet’s atmosphere

Astronomers have finally detected helium in the air of an alien world — and there’s apparently plenty of it.

more…

I’m sure we had a discussion about this earlier, did I dream that or was it in chat?

I can’t comment about the discovery except to say that white dwarfs sometimes have a lot of helium in their atmospere, and that perhaps I ought to start paying more attention to the spectroscopic methods used in detecting exopanet atmospheres.