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what's up for January evolving planets

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hello and welcome I'm Jane Houston Jones

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at NASA's Jet Propulsion Laboratory in

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Pasadena California like people planets

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grow old instead of wrinkles many have

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craters and rather than becoming frail

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rocky planets cool and shrink features

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on Mars resembling dry riverbeds and the

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discovery of minerals that form in the

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presence of water have led planetary

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scientists to envision a younger Mars

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that was warmer and wetter water that

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once flowed across the surface

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evaporated or became trapped below the

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surface or in polar ice caps elsewhere

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the interiors of mercury and our moon

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have cooled significantly as they cool

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they shrank leading to lines of cliffs

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or scarps that formed as the surface

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Venus and Jupiter ruled the early

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evening sky this month and Mars

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brightens and now rises in the late

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evening before midnight at the beginning

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of the month and by eight-thirty at

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month's end Saturn Rises around midnight

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but it's best seen near dawn the Rings

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are opened wider now showing a 15-degree

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tilt the January quad ranted meteor

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shower on the 4th peaks just as the moon

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sets near midnight you can also spot an

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asteroid this month eros is visible in

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the eastern sky below the constellation

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Leo in 1998 NASA's near shoemaker probe

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flew by arrows orbited it in two

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thousand and soft landed on the asteroid

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in 2001 you can learn more about our

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evolving planets at solar system NASA

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gov / y SS for year of the solar system

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and you can learn about all of NASA's