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SN 2007bi: Without a Trace

All stars die, but not all stars die the same. Some will explode and leave no trace behind. These special explosions with no trace are called pair-instability supernovae (PISNe) and only happen in the most massive of stars. Today’s paper from 2009 investigates a unique supernova, SN 2007bi, that was initially thought to be the first PISN ever observed.

Dragging Along Dark Matter

As the universe’s temperatures drop, there is a type of dark matter that can freeze-in. There is one consequence: it’s a bit of a drag.

Beyond astro-ph

Astronomy beyond the research

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Navigating careers in astronomy

Career advice

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