Surface of a planet with an astronaut | Still from "Nova: Back to the Moon"

PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA programs demystify science and technology and highlight the people involved in scientific pursuits.

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The Planets: Inner Worlds

The rocky planets - Mercury, Venus, Earth and Mars - were born of similar material around the same time, yet only one supports life. Were Earth's neighbors always so extreme? Is there somewhere else in the solar system where life might flourish?

  • 2019-07-28T14:00:00-07:00
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  • 2019-07-28T17:00:00-07:00
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The Planets: Mars

Mars was once a blue water world studded with active volcanoes. But when its magnetic field and protective atmosphere faded, it became the frozen desert planet we know today. With so many necessary elements in place, did life ever form on Mars?

  • 2019-07-28T15:00:00-07:00
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  • 2019-07-28T18:00:00-07:00
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The Planets: Jupiter

Jupiter's massive gravitational force made it a wrecking ball when it barreled through the early solar system. But it also shaped life on Earth, delivering comets laden with water - and perhaps even the fateful asteroid that wiped out the dinosaurs.

  • 2019-08-04T14:00:00-07:00
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  • 2019-08-04T17:00:00-07:00
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The Planets: Saturn

NASA's Cassini explores Saturn for 13 years, looping through its icy rings and flying by its moons. The probe captures stunning ring-moon interactions, but when it finds the ingredients for life on the moon Enceladus, a bittersweet decision is made.

  • 2019-08-11T14:00:00-07:00
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  • 2019-08-11T17:00:00-07:00
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Pluto and Beyond

Join the mission as the New Horizons spacecraft attempts to fly by NASA's most distant target yet. Since it explored Pluto in 2015, New Horizons is zooming toward Ultima Thule, an object four billion miles from Earth.

  • 2019-08-18T12:00:00-07:00
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The Planets: Ice Worlds

In the far reaches of the solar system, Uranus and Neptune dazzle with unexpected rings, supersonic winds and dozens of moons. And NASA's New Horizons gets a stunning up-close view of Pluto before venturing deep into the Kuiper Belt.

  • 2019-08-18T14:00:00-07:00
    KCET-HD