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cover of episode Saying Farewell to the Spacecraft That Mapped the Milky Way

Saying Farewell to the Spacecraft That Mapped the Milky Way

2025/2/26
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Science Quickly

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Lee Billings: 我是《科学美国人》杂志的资深太空和物理编辑,今天来谈论欧洲航天局的盖亚探测器任务。盖亚探测器于2013年12月发射,旨在创建有史以来最好、最大、最精确的银河系地图。它的主要工作是观测恒星的运动,并结合亮度、温度和化学成分等信息,来推断恒星的距离和其它属性。这项任务于2024年1月15日停止科学数据收集,但其科学遗产才刚刚开始。盖亚的数据将帮助我们更好地理解银河系的形成和演化,包括其合并历史、暗物质分布、以及太阳系在银河系中的运动。此外,盖亚的数据还将帮助我们发现大量的系外行星,这将极大地扩展我们对太阳系外行星系统的认识。 盖亚的数据分析是一个漫长的过程,目前我们只分析了大约三分之一的数据。未来几年,我们将陆续收到更多的数据发布,其中包括对银河系结构、恒星运动、以及系外行星的更深入的了解。盖亚的数据将成为未来几十年天文学研究的重要基础,并为未来的空间任务提供参考。 虽然盖亚的科学观测已经结束,但它仍然在太空中运行,并将在3月27日被转移到一个墓地轨道。盖亚探测器对天文学的贡献是巨大的,它不仅为我们提供了前所未有的银河系地图,也为我们理解宇宙提供了新的视角。 Rachel Feltman: 作为节目的主持人,我与Lee Billings讨论了盖亚探测器任务的结束以及它对我们理解宇宙的重大贡献。我们讨论了盖亚探测器的目标、它所取得的发现以及它对未来天文学研究的影响。我们还探讨了盖亚探测器的数据分析过程以及未来数据发布的预期。此外,我们还讨论了在盖亚探测器任务结束后,该领域未来的发展方向。

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The Gaia spacecraft, launched in 2013 by the European Space Agency, created the most accurate map of the Milky Way. While it stopped collecting data in January 2024, its scientific legacy is just beginning. The data collected is crucial for understanding our place in the universe.
  • Gaia created the most accurate map of the Milky Way.
  • It collected over three trillion observations.
  • The data is fundamental for various astronomical studies but is not visually appealing.

Shownotes Transcript

The Gaia spacecraft stopped collecting data this January after about 11 years and more than three trillion observations. Senior space and physics editor Lee Billings joins host Rachel Feltman to review Gaia’s Milky Way–mapping mission and the tidal streams, black holes and asteroids the spacecraft identified. 

Recommended reading:

New Maps of Milky Way Are Biggest and Best Yet https://www.scientificamerican.com/article/gaias-multi-billion-star-map-of-the-milky-way-keeps-getting-better/

Astronomers Discover Milky Way’s ‘Sleeping Giant’ Black Hole Shockingly Close to Earth https://www.scientificamerican.com/article/milky-way-sleeping-giant-black-hole-shockingly-close-to-earth/

E-mail us at [email protected]) if you have any questions, comments or ideas for stories we should cover!

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Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper, Madison Goldberg, Naeem Amarsy and Jeff DelViscio. This episode was hosted by Rachel Feltman with guest Lee Billings. Our show is edited by Madison Goldberg with fact-checking by Shayna Posses and Aaron Shattuck. The theme music was composed by Dominic Smith.

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