1·Studies of stars and dust like those found in the Heart and Soul Nebulas have focussed on how massive stars form and how they affect their environment.
对这些在心脏与灵魂星云中发现的恒星和尘埃的研究已经聚焦于大质量恒星如何形成及如何影响它们的环境。
2·Good spectra of the spiral nebulas are difficult to obtain because of their extreme faintness.
旋涡星云因为非常暗，难以得到它们的清晰的光谱。
3·This suggest that the nebulas are aggregates of stars .
这说明星云是恒星的聚集体。
4·Find planets, stars, nebulas, galaxies and more that you select.
寻找您选择的行星，恒星，星云，星系及其它目标。
5·This assumption think that all of the Earth and the moons are the nebulas which floats in the solar systems through revolving and absorbing to accumulate and become a star body in the meantime.
这一假设认为，地球和月球都是太阳系中浮动的星云，经过旋转和吸积，同时形成星体。