Sent_en: 2zh According to the theory, the remaining, more slowly decaying radioactivity in the core could continue to warm and melt the moon's interior for billions of years, along with tidal forces from Saturn's gravitational tug, said a statement on NASA"s website.
Sent_yy: 航空航天局在其网站上发布的一项声明中说道：“根据这一理论，内核中残留的，衰变较慢的放射性物质有可能在接下来的几十亿年中继续加热并融化土卫二的内部，连带着在土星引力牵引下生成的潮汐力”。