北京天文馆2018年公众科学讲座系列之九

 谈天说地

Speaking of Space

北京天文馆2018年公众科学讲座系列之九

Public Outreach Science Seminar 2018

Beijing Planetarium

讲座题目：NEXT STOP JUPITER! -- Giant Planets Exploration and the Cassini legacy

下一站木星！ --- 巨行星探索与卡西尼遗产

主讲人：Michel Blanc 教授

（法国）Institut de Recherche en Astrophysique et Planetologie (IRAP), Observatoire Midi-Pyrénées (OMP), Universite Toulouse III – Paul Sabatier, Toulouse, France

中国科学院国家空间科学中心空间天气实验室 访问教授 

讲座时间： 2018年6月9日（星期六），下午3:00

讲座地点：北京天文馆B馆505教室

主讲人/讲座内容简介:

  我们太阳系拥有4个巨行星：2颗“气体巨行星”，木星和土星，和2颗“冰巨行星”，天王星和海王星。这4个巨行星的每一个都是我们太阳系中的一个“小太阳系”，都有着规则和不规则的卫星、环、气体、磁层、和极光。通过迄今为止的探测器所传回的信息，我们已经获取了关于他们极为丰富的信息，在不远的将来我们会获取到更为丰富的信息。

  在NASA-ESA的卡西尼-惠更斯轨道任务结束9个月之后，我将向北京的听众展示我们对“指环王”所获取的独特的发现，我们从卡西尼的任务重获取到的宝贵经验将为我们未来对木星和木星系统的探测奠定基础。

  Our Solar System hosts four Giant planets: two “Gas Giants”, Jupiter and Saturn, and two “ice Giants”, Uranus and Neptune. Each of these planets is in fact a “small solar system in the big one”, with a diverse family of bodies (small irregular and large regular satellites, rings, gas and plasma tori, a magnetosphere and polar aurorae) which follow the central planet in its course around the Sun. The lessons we learn today, and will learn even better tomorrow, from their exploration by our space probes are extremely rich. They can be extrapolated to provide us with a better understanding of the Solar System as a whole, and also of the more than 500 (exo)planetary systems that have already been discovered around stars other than the Sun. 

  Just nine months after the end of in-orbit operations of the NASA-ESA Cassini-Huygens mission to the Saturn System, I will present to the Beijing public some of the unique discoveries about the   “Lord of the Rings” that this outstanding mission has brought to us. The lessons from Cassini are going to play a major role in preparing for the next target of the exploration of giant planets: Jupiter and the Jupiter System. 

  I will first talk about the scientific objectives of the space missions that are now operating at Jupiter (JUNO) or which are already planned to go to Jupiter in the next decade (JUICE of ESA and Europa Clipper of NASA): how was the body of Jupiter formed and how is it inside? How does it work? Does it host habitable worlds? I will then talk about the next logical steps in the exploration of the Jupiter system: one future mission should focus on searching for traces of life at Europa; another very important one should search for the Origin and formation scenario of the Jupiter system.

说明：

（1）北京天文馆公众科学讲座至少在每个月的第三个周六举办一次。

（2）讲座免费。有剧场票或展厅票的参观者可乘新馆展厅东西两侧的电梯到达505教室；无剧场或展厅票的听众凭有效证件（身份证、学生证、工作证等）于当日下午2点后在售票处领票，从B馆入口安检后入场。

（3）座位先到先得，坐满为止。

（4）本次讲座配有现场翻译。

欢迎您的参与！