公众科学讲座海报

一张友好的公众科学讲座海报，A2 竖版，由当地大学天文系主办。中央插画采用干净的扁平矢量风格：一颗恒星三个生命阶段的程式化剖面，画成三个嵌套的发光圆，从左下到右上对角阶梯排列，每个标着小标签「原恒星」「主序星」「红巨星」。暖桃色、赭色与暗紫色柔和光晕。背景为深海军蓝场，散布小白色加号星和几条薄荷色星座线。排版顶部标题用自信的几何无衬线两行写「恒星如何诞生与消亡」；插画下方友好副标题写「一次面向公众的夜空讲座」。底部信息块为整洁双栏网格：左栏时间与地点，右栏主讲人与报名方式。标题旁有一个小望远镜图标。

A friendly public science talk poster, A2 vertical format, hosted by a local university astronomy department. Central illustration in clean flat vector style: a stylised cross-section of a star at three life stages, drawn as three nested glowing circles arranged in a diagonal stair from lower-left to upper-right, each labelled with a tiny tag "protostar", "main sequence", "red giant". Soft halos in warm peach, ochre, and dusky violet. Background: a deep navy field scattered with small white plus-sign stars and a few minty constellation lines. Typography: top headline in a confident geometric sans, two lines, "How Stars Live / and How They Die"; below the illustration a friendly subline: "a free evening lecture for curious minds". Bottom info block in a clean two-column grid: left column "Dr. M. Aharonian / Department of Physics"; right column "Thursday 7:30 PM / Lecture Hall C / no ticket required". A tiny telescope icon sits next to the title as a quiet flourish. Mood: warm, welcoming, intelligent, never childish.