在应用中关注朋友， 获取最新动态！
扫描二维码
在应用中关注朋友， 获取最新动态！
扫描二维码
公开 ・ 03.10
2026.03.09 (Mon)
1. string theory 2. light year 3. light speed 4. the distance particles take between earth and sun is 8 minutes and for moon and earth, is 1 to 2 seconds. 5. twin paradox. 6. time delay between earth and space
ukassa