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In km/sec, how fast is the universe expanding?

Answer 1

The expansion of universe varies as distance increases as per Hubble law.

Recessional velocity= H0 x r
where H0= hubble constant
r= recessional velocity.
Hubble constant is 73 Km/second/mega parsecond.
so to find expansion rate you have to multiply with Hubble constant with distance to object.

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Answer 2

Hailey Alvarez

The Hubble constant, which measures the current rate of expansion of the universe, is about 70 km/s/Mpc, or 3.26 million light-years per megaparsec. This implies that galaxies are expanding apart at a speed of 70 km/s for each megaparsec.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.