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So a neutron star is kind of about the size of Chicago.
Unexpected elements from the BBC World Service.
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This is the global news podcast from the BBC World Service.
I'm Valerie Sanderson and at 1400 hours GMT on Thursday 5th December, these these are our main stories.
Rebels in Syria take control of a second major city with the withdrawal of President Bashar Al Assad's troops from Hama.
South Korea's former defense minister is banned from leaving the country
after the President's failed attempt to impose martial law.
Also in this podcast, the way I.
Saw my sister, I didn't see her get killed, but I saw her dead.
And that there is the deed of a monster.
Disturbing reports of sexual violence in the illegal mines of Brazil.
Last week, the conflict in Syria, which began back in 2011,
flared up dramatically when rebels seized the city of Aleppo,
forcing a hasty retreat by the government troops of President Bashar Al Assad.
Now the Syrian army has announced its withdrawn from another key city,
Hama, just two days after the rebels began a campaign to seize it.
The rebels say they've taken control of the central prison and free detainees there.
For more, here's our Middle east correspondent, Lina Sinjab, who's in Beirut.