Wednesday, February 20, 2013

Venus' Transit and the Search for Other Worlds | Redux

Venus' Transit and the Search for Other Worlds

Venus transit from Reno, Nevada
Venus transit from Reno, Nevada by Gadget_Guru
License (according to Flickr): Attribution License
Excerpt:

The first recorded transit of Venus: William Crabtree (1610–1644) was an astronomer, mathematician, and merchant from what is now Greater Manchester, England. He was one of only two people to observe and record the first predicted transit of Venus in 1639. Credit: Ford Madox Brown, mural at Manchester Town Hall. Light curve of a planet transiting its star: Transit data are rich with information. By measuring the depth of the dip in brightness and knowing the size of the star, scientists can determine the size or radius of the planet. The orbital period of the planet can be determined by measuring the elapsed time between transits. Once the orbital period is known, Kepler's Third Law of Planetary Motion can be applied to determine the average distance of the planet from its stars.

People:

Kepler

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Relevance: 0.785093

Disambiguation: Academic | Astronomer | OperaCharacter | ScientistReferences:

William Crabtree

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Madox Brown

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Captain James Cook

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Jeremiah Horrocks

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Natalie Batalha

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Relevance: 0.276689

SentimentQuote
0.0685477"Throughout history, astronomers have creatively used nature's coincidences as opportunities to learn something new about the universe," said Natalie Batalha, ...
0"Throughout history, astronomers have creatively used nature's coincidences as opportunities to learn something new about the universe," said Natalie Batalha, Kepler mission scientist at NASA Ames Research Center, Moffett Field, Calif. "Today is no different. As Venus crosses the disk of the sun, her shadow sweeps across the face of Earth in the same way that the shadows cast by distant exoplanets sweep across the face of the Kepler photometer."
Sentiment Stats:
  • Number of Quotes: 2
  • Aggregate Sentiment: 0.0685477
  • Mean: 0.03427385
  • Standard Deviation: 1.7320508075689

Michele Johnson

Overall Sentiment: 0

Relevance: 0.269269

Key:

  • Aggregate Sentiment is meant to be an indicator of an individual's overall sentiment.
  • The Mean is meant to be an indicator of an individual's average comment sentiment.
  • The Standard Deviation, when there are enough quotes, will indicate an individual's consistency of sentiment (i.e. a Standard Deviation of 0 would mean they were very consistent in their sentiment and 1 would mean they were very inconsistent).

Note that quote stats are likely to be meaningless beyond the aggregate score due to the tiny sample size. However, they are always provided just in case you find something useful there.

Additional Info:

Organization: Kepler Mission

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Technology: Kepler space telescope

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Facility: Moffett Field

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Facility: Manchester Town Hall

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Country: England

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Disambiguation: Location | PoliticalDistrict | AdministrativeDivision | GovernmentalJurisdictionReferences:

StateOrCounty: Calif

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City: Manchester

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Disambiguation: AdministrativeDivision | EnglishMetropolitanBorough | GovernmentalJurisdiction | OlympicBiddingCityReferences:
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