Bullets or fragmenting shells?
Article Abstract:
High-velocity bullets of interstellar gas could have caused the wide fan of linear features in the Orion nebula. The bullets would be explosively ejected from IRc2, a huge young star. Another theory is that a strong stellar wind from IRc2 sweeps up a smooth shell of interstellar gas. This gas is broken up by gas dynamical instabilities as stellar wind velocity increases on a timescale of a few hundred years. Second theory is seems to give a better explanation of the observed phenomena.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
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Gravitational waves constrained
Article Abstract:
New experiments are being devised for testing the cosmological models to analyze the gravitational waves, the tiny disturbances in space-time that provide unprecedented information on the early Universe.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2007
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