創(chuàng)造自己的星系！神奇，今天的APOD，是個天文游戲！不妨在閑暇時間挑戰(zhàn)一下！

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APOD: 2022 June 19 - Game: Super Planet Crash (nasa.gov)

Can you create a planetary system that lasts for 1000 years? Super Planet Crash, the featured game, allows you to try. To create up to ten planets, just click anywhere near the central star. Planet types can be selected on the left in order of increasing mass: Earth, Super-Earth, Ice giant, Giant planet, Brown dwarf, or Dwarf star. Each planet is gravitationally attracted not only to the central Sun-like star, but to other planets. Points are awarded, with bonus factors applied for increasingly crowded and habitable systems. The game ends after 1000 years or when a planet is gravitationally expelled. Many exoplanetary systems are being discovered in recent years, and Super Planet Crash demonstrates why some remain stable. As you might suspect after playing Super Planet Crash a few times, there is reason to believe that our own Solar System has lost planets during its formation.

你能造出持續(xù)1,000年的行星系統(tǒng)嗎？這個主題游戲“超級行星傳奇”，正可讓你試試手氣。只要在中心恒星附近點一點，就能加入至多10顆行星。你可在左側(cè)的清單選擇不同的行星，包括地球、超級地球、冰質(zhì)巨行星、巨行星、棕矮星和矮星等質(zhì)量漸增的天體。每顆行星除了受到中心類太陽恒星的重力吸引之外，也受到其他行星的重力牽引。游戲的積分會隨系統(tǒng)持續(xù)的時間增加，而越擁擠的宜居帶系統(tǒng)可得到越多額外加分。游戲終止于1,000年時，或有任何一顆行星被重力驅(qū)逐出去之時。近年來發(fā)現(xiàn)了許多系外行星系統(tǒng) ，而“超級行星傳奇”揭示為何某些系統(tǒng)會穩(wěn)定存在。在玩了“超級行星傳奇”數(shù)次之后，你或許會不禁納悶：我們的太陽系在形成之初，是否也遺失了一些行星？