The office that astronomer Lei Hao shares with her fellow research associates on the first floor of the Space Sciences Building at Cornell University is tidy and organized. But Hao has been thinking a lot lately about dust.
Actually, shes recently found a great deal of it. And shes thrilled.
The dust in question is between 0.88 billion and 2.4 billion light years away from Haos office, in galaxies scientists classify as active galactic nuclei (AGNs). By confirming that the dust exists, Hao and her team of researchers from Cornell and several other institutions have given new weight to a popular, but not universally accepted, theory of AGNs. Their new evidence is published in the June 1 issue of Astrophysical Journal Letters (Vol. 625, pp. L75-L78).
Lauren Gold | EurekAlert!
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