By what factor would the critical density of the universe today change if the Hubble constant today measured at 5 times greater than what we previously thought?

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Q: What mass of ice at 0° is necessary to cool 150 g of water from 25°C to 0°C?

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Q: example of problem solving with an answer about building foundations using dimension paper.

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.