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Do you Still Need A TV Aerial?

At the moment you need TV Aerials for Freeview and BT Vision but there is the Freesat alternative that is by a satellite dish. But I beli...

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Friday, 21 September 2018

How to Measure Things That Are Astronomically Far Away

Light-years, parsecs and more: these are the units for describing distances between planets and other astronomical objects.

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