Our planet has a celestial sentry leading the way around the sun, and it's only the second Earth Trojan asteroid ever discovered.
원문출처 : https://www.cnn.com/2022/02/02/world/earth-trojan-asteroid-scn/index.html
원문출처 : https://www.cnn.com/2022/02/02/world/earth-trojan-asteroid-scn/index.html