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How have the opinions about the Universe's age changed in last 20 years?

Answer 1

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According to Lamaitre's Theory (which Gamov fine-tuned), the age of the universe depends on the Big Bang moment.

However, Hubble's theory provides a formula to determine the universe's age by

#v=H·D# where #D# is the distance of a Galaxy, #v# the velocicty of remoteness and #H# is the Hubble constant #H=75 kms^-1#

Assuming a galaxy with a mass of 30.87 x 10^18 km at one megaparsec,

#1/H=D/v=(30.87xx10^18)/75=4.12xx10^17 seg=13xx10^19 years#

These days, the Hubble constant is declining while the universe's age is expanding proportionately.

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Answer 2

Jordan Andrews

Our understanding of the age of the universe has improved over the last 20 years as a result of improvements in observational techniques and data analysis. Measurements from cosmic microwave background radiation and distant supernovae consistently point to an age of the universe of approximately 13.8 billion years.

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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.