Hubble time

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Two chicks near an egg with a white background (poultry, chick, chickens, birds).

What Do Eggs Have to Do with Easter?

Marriage. A couple getting married during a church wedding ceremony. (religion, ceremony, bride, groom)

The Seven Sacraments of the Roman Catholic church

African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.

Timeline of the American Civil Rights Movement

A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England

Inventors and Inventions of the Industrial Revolution

Statue of Nostradamus

Nostradamus and His Prophecies

Illustration for Demystified "How Dangerous is Quicksand"

How Deadly Is Quicksand?

July, 2006, Launch of Space Shuttle Discovery STS-121. See attached for full caption information.

Will Light-Speed Space Travel Ever Be Possible?

Hubble time

astronomy

Learn about this topic in these articles:

age of the universe

In physical science: Astronomy
…and later increased the “Hubble age” of the universe to more than 10 billion years.
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cosmology

In cosmology: Steady state theory and other alternative cosmologies
…apparent large discrepancy between the Hubble time and other indicators of cosmic age. This discrepancy was resolved by revision of Hubble’s original estimate for H₀, which was about an order of magnitude too large owing to confusion between Population I and II variable stars and between H II regions and…
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