Listen now (4 min) | In this week's episode of Astronomy News with The Cosmic Companion, we look at a massive white dwarf that may be the product of an ancient collision between stars. We also examine a new idea of dark matter – the mysterious mass holding galaxies together – before heading to Mars for a new discovery – as well as a stunning image of the Martian landscape – from the Curiosity rover. Finally, we wrap up the show with a look at Betelgeuse, and new studies looking at whether or not this red giant star is on the verge of exploding as a supernova.
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