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儿童科学

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A warm, clear look at the first GPS satellite launched 1978. Learn how NAVSTAR Block I used atomic clocks and careful math to begin a quiet revolution that still guides phones, rescue teams, and daily life.

第一颗GPS卫星发射（1978年）：NAVSTAR的静悄悄革命

温暖而清晰地了解1978年发射的第一颗G…

Roshni Sawhny

27 3 月, 2026 •

A sunny, playful light and shadows activity: a 10-minute backyard shadow hunt that boosts observation. Trace shadows, compare sharp and fuzzy edges, and spark curiosity with a tiny science lab at home.

光与影活动：后院影子狩猎

一个阳光明媚、充满趣味的光与影活动：一个…

Jaikaran Sawhny

25 3 月, 2026 •

Planetary orbits for kids are graceful, repeating paths shaped by gravity. This simple guide explains orbits, Kepler and Newton, Earth’s orbit, and how we study planets. Try easy demos to feel the pull of space.

儿童行星轨道：简单入门

儿童行星轨道是由重力塑造的优雅重复路径。…

Roshni Sawhny

25 3 月, 2026 •

Ankylosaurus magniventris was a low, heavily armored herbivore from Late Cretaceous North America. Read kid-friendly facts about its armor, tail club, size, fossils, and why it still delights curious kids.

甲龙巨腹龙：装甲花园巨人的事实

甲龙巨腹龙是来自白垩纪晚期北美的低矮、重…

Roshni Sawhny

22 3 月, 2026 •

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