
Episode #1
2026.08.23请假
大家好,我是吴京平啊,不好意思,我刚从合肥回来,这几天实在是太忙了。明天还得去科技馆带团,实在是没时间写周末的固定节目了,连续的跳票实在是不好意思。不过,暑期也快过去了,未来不会有那么多的出差了,应该能保证每个礼拜的更新吧。好啦,闲话不多说了,咱们下次再说。

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科学史评话最新专辑 平哥首个医学专栏上线啦,在喜马拉雅搜索“ 吴京平:通俗医学史 ”,抢先收听!
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Signup to Generate a Pitch科学史评话最新专辑 is a science podcast hosted by 科学史评话, with 625 episodes on record and a Required Pod Score of 80. PitchCentric scores this show on Booking Probability, Listen Score, and live audience signals refreshed every 24 hours.
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Episode #1
大家好,我是吴京平啊,不好意思,我刚从合肥回来,这几天实在是太忙了。明天还得去科技馆带团,实在是没时间写周末的固定节目了,连续的跳票实在是不好意思。不过,暑期也快过去了,未来不会有那么多的出差了,应该能保证每个礼拜的更新吧。好啦,闲话不多说了,咱们下次再说。

Episode #1
大家好,我是吴京平啊,不好意思,这个礼拜又得请假,不光是这个礼拜,下个礼拜也够呛。这个礼拜,我正在青海带团呢,下个礼拜,我要去合肥,实在是没时间了。 白天带着孩子们参观了恶魔之眼艾肯泉和翡翠湖,可惜天气不好,拍照片打折扣。不如晴天好看,下一站要去水上雅丹,不知道能不能碰上好天气,但愿老天爷帮忙。青海城市彼此之间都很远,从一个景点到另外一个景点,动辄几百公里的车程。后边还得坐好几个钟头的大巴呢。闲话也就不多说了,咱们下回再说吧。

Episode #1
COBE卫星1989年发射升空,一边收集数据,一边处理,地面团队为了分析这些数据,足足花了两年多才拿出第一期成果。一直到1992年,团队才公布了震动科学界的数据成果。根据接收到的信号数据,微波背景辐射与标准的黑体辐射曲线完全重合,误差小于0.005%,这个结果发布的时候,全场科学家起立鼓掌,这就意味着大爆炸理论获得了铁证如山的胜利。伽莫夫他们几个科学家当年提出的理论还是正确的。 COBE卫星团队得到了两张图。一张图的画面中央有一条。极其刺眼的红黄色横条,那就是银河系。第2张图就是抠掉银河系后产生的图像,全图红蓝相间,花纹分布有点像个皮蛋。红色的地方比蓝色的地方温度略微高了1/10万开尔文,这么微小的起伏都被COBE卫星捕获到了。这就说明,宇宙诞生以后的38万年那个时候仍然处于一片混沌的状态,在那个时候,物质的分布不是绝对均匀的,存在着极其微小的差异,正是这一点点极其微小的差异。最后打破了分布的平衡,形成了一坨一坨的日月星辰……

Episode #1
这个2016HO3小行星有个名字叫“震荡天星”,名字来自于夏威夷语。为啥叫这个名字呢?因为这个小行星的轨道实在是太特殊的。这家伙尽管是围着太阳公转的行星,但是从我们地球上看过去,这个家伙就好像绕着我们周围瞎转悠,距离并不算太远。所以我们派探测器去访问它,并不需要花费太大的动力。 震荡天星为什么这么特殊呢?跟它的轨道有关系。它的轨道和地球的轨道这个圈圈差不多大,地球转一圈是365.25天,它是365.77天。几乎是一样的。但是这两者的轨道并不重合,另外,这两个轨道圆圈也并不在同一个平面内,有个8°的交叉角。这就造成了一个奇怪的现象。有时候震荡天星在地球外侧,但是过了交叉点以后就交换位置了,变成震荡天星在内测,地球在外侧。因为两个轨道圆圈并不在一个平面内,有个交叉的夹角。所以有时候震荡天星在地球上边,有时候又变成下边,这下就热闹了。 只要上下左右结合一下,以我们地球为基准,震荡天星先是在左边、然后是在上边,接下里在右边,最后在在下边。大家发现没有,看起来就像是在绕着地球转,但是这家伙并不是地球的卫星。只能叫“准卫星”。目前看来,这家伙就在地球附近起码存在了100年了。两者的公转周期实在是太接近了,每转一圈,只是稍微错开一点点。未来还会陪伴地球好几百年……

Episode #1
长征10号的基本型是登月用的,根本不考虑回收。一子级与助推器采用3个5米直径芯级并联构型,共配置21台130吨级YF-100K液氧煤油发动机。二子级配置2台 130吨级真空版YF-100M液氧煤油发动机。三子级配置3台YF75E氢氧发动机,用于最后的奔月轨道注入。飞船用的是梦舟飞船,登月舱是揽月着陆器。 长征10号甲就省事多了,用不着捆绑助推器了,也用不着第三级,近地轨道的运载能力大概是14吨。用来发射新版的梦舟飞船去空间站,或者运送新版的天舟货运飞船,有14吨的运载能力就够用了。 长征10号乙呢,基本配置和长征10号甲差不多,二级火箭换成了YF219甲烷发动机,推力达到140吨,近地轨道的运载能力大了2吨,达到了16吨。主要用来搞商业航天发射,到了长征10号丙,连一级火箭也换成液氧甲烷发动机,从7台增加到9台,火箭起飞推力比长征5号还要大200吨……
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