Kivinjari
Mahali letu katika anga, kiwango cha kweli cha mfumo wa jua, siku na miaka, misimu, hatua na eclipses, na mbingu ya usiku.
NASA
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Mahali yetu katika nafasi
- Our place in space · 10 min Imekamilika
From your street to the edge of the Milky Way: where Earth sits, how far away things are, and how we measure it.
- Our place in space · 10 min Imekamilika
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Kutembea kutoka Jua hadi Neptune
- A walk from the Sun to Neptune · 10 min Imekamilika
Almost every picture of the solar system is wrong about scale. Walk it at true scale and feel how empty space really is.
- A walk from the Sun to Neptune · 10 min Imekamilika
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Siku na miaka katika kila dunia
- Days and years on each world · 10 min Imekamilika
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?
- Days and years on each world · 10 min Imekamilika
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Kwa nini tuna misimu
- Why we have seasons · 12 min Imekamilika
It is not about distance from the Sun. It is about tilt. See why summer days are long and winter noons are low.
- Why we have seasons · 12 min Imekamilika
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Mwezi awamu na eclipses
- Moon phases and eclipses · 12 min Imekamilika
Why the Moon changes shape through the month, and why we do not get an eclipse every new and full Moon.
- Moon phases and eclipses · 12 min Imekamilika
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Mbingu ya usiku na uchafuzi wa mwanga
- The night sky and light pollution · 10 min Imekamilika
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.
- The night sky and light pollution · 10 min Imekamilika
Vifaa na masomo kutumia mifano rahisi kwa ajili ya kujifunza tu. Hawapaswi kutumika kwa ajili ya urambazaji, mipango ya kazi au uamuzi wowote wa uendeshaji. Shahada ni bure na si-kuheshimiwa. Soma maudhui ya elimu kutowajibika