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  1. #1
    NewHopeR is offline Senior Member
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    Default What does "dip" mean here?

    Context:

    Kepler discovers planets and planet candidates by measuring dips in the brightness of more than 150,000 stars to search for planets that cross in front, or "transit," the stars. Kepler requires at least three transits to verify a signal as a planet.

    More:
    NASA - NASA's Kepler Mission Confirms Its First Planet in Habitable Zone of Sun-like Star

  2. #2
    rainous's Avatar
    rainous is offline Member
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    Default Re: What does "dip" mean here?

    Quote Originally Posted by NewHopeR View Post
    Context:

    Kepler discovers planets and planet candidates by measuring dips in the brightness of more than 150,000 stars to search for planets that cross in front, or "transit," the stars. Kepler requires at least three transits to verify a signal as a planet.
    Not a teacher

    Dips in the brightness means "decreases" in the brightness.
    If a planet passes in front of a twinkling twinkling little star,
    naturally your eyes will register less brightness unless you have clairvoyant powers.
    That's how these folks figure out where planets are.
    Last edited by rainous; 08-Dec-2011 at 11:04.

  3. #3
    SoothingDave is offline VIP Member
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    Default Re: What does "dip" mean here?

    A "dip" would be a temporary decrease.

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