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Umwanya in Umwanya, i Igipimo Bya i Sisitemu, Amasaha na imyaka,, na, na i.

NASA

  1. in Umwanya

    • Our place in space · 10 min

      From your street to the edge of the Milky Way: where Earth sits, how far away things are, and how we measure it.

  2. A Kuva: i Kuri

    • A walk from the Sun to Neptune · 10 min

      Almost every picture of the solar system is wrong about scale. Walk it at true scale and feel how empty space really is.

  3. Na ku

    • Days and years on each world · 10 min

      Venus takes longer to spin once than to go around the Sun, Jupiter spins in under ten hours, and Neptune's year is 165 of ours. Why?

  4. Twebwe

    • Why we have seasons · 12 min

      It is not about distance from the Sun. It is about tilt. See why summer days are long and winter noons are low.

  5. Na

    • Moon phases and eclipses · 12 min

      Why the Moon changes shape through the month, and why we do not get an eclipse every new and full Moon.

  6. Na

    • The night sky and light pollution · 10 min

      Most people alive today have never seen a truly dark sky. See how many stars light pollution hides, and what anyone can do about it.

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