កម្មវិធី​រុករក

1. 1

   ບ່ອນ​ຂອງ​ເຮົາ​ໃນ​ອະວະກາດ

   • Our place in space · 10 នាទី

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

2. 2

   ໄປ​ຈາກ​ດວງ​ຈັນ​ຫາ​ດາວ​ເນປຕອນ

   • A walk from the Sun to Neptune · 10 នាទី

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

3. 3

   ວັນ ແລະ ປີ​ໃນ​ໂລກ​ແຕ່ລະແຫ່ງ

   • Days and years on each world · 10 នាទី

     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. 4

   ເຫດຜົນທີ່ເຮົາມີລະດູການ

   • Why we have seasons · 12 នាទី

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

5. 5

   ປ່ຽນ​ຊື່​ດາວ​ເຄາະ

   • Moon phases and eclipses · 12 នាទី

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

6. 6

   ຕາເວັນ​ກາງຄືນ ແລະ ການ​ປົນເປື້ອນ​ດ້ວຍ​ແສງ

   • The night sky and light pollution · 10 នាទី

     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.

ເຄື່ອງມື ແລະ ບົດຮຽນໃຊ້ແບບງ່າຍໆເພື່ອການຮຽນຮູ້ເທົ່ານັ້ນ. ພວກມັນບໍ່ຄວນຖືກໃຊ້ ສຳ ລັບການ ນຳ ທາງ, ການວາງແຜນພາລະກິດ ຫຼື ການຕັດສິນໃຈໃນການປະຕິບັດງານໃດໆ. ໃບຢັ້ງຢືນແມ່ນຟຣີແລະບໍ່ມີໃບອະນຸຍາດ. ອ່ານຂໍ້ຍົກເວັ້ນຄວາມຮັບຜິດຊອບຂອງເນື້ອໃນການສຶກສາ