• Question: how big is the Milkyway

    Asked by Thomas to Phil on 14 Mar 2017.
    • Photo: Phil Sutton

      Phil Sutton answered on 14 Mar 2017:

      The Milkyway is approximately 100,000 light years across (that is also about 1,000,000,000,000,000,000 km). So with our current technology it would take easily a few millions years to travel across as we can’t travel as fast as light……yet.

      It also has a few hundred billion stars in it. That’s a lot of stars and planets to visit and explore!

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