Not so long ago, humanity lived in a universe with only a small number of known planets, all of them orbiting our Sun. But a new raft of discoveries marks a scientific high point: More than 5,000 planets are now confirmed to exist beyond our solar system.

The planetary odometer turned on March 21, with the latest batch of 65 exoplanets – planets outside our immediate solar family – added to the NASA Exoplanet Archive. The archive records exoplanet discoveries that appear in peer-reviewed, scientific papers, and that have been confirmed using multiple detection methods or by analytical techniques.

This artist’s concept is of a Jupiter-mass planet orbiting the nearby star Epsilon Eridani, located 10.5 light-years away from Earth.

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What are exoplanets?

Cosmic Milestone: NASA Confirms 5,000 Exoplanets

Image Credit: NASA, ESA, and G. Bacon (STScI)


不久前,人类生活在一个只有少量已知行星的宇宙中,所有这些行星都围绕着我们的太阳运行。但一系列新的发现标志着一个科学的高点:现在已经证实有5,000多颗行星存在于太阳系之外。

行星里程表于3月21日开启,最新一批65颗系外行星——我们的太阳系家族之外的行星——被添加到NASA系外行星档案中。该档案记录了出现在同行评审的科学论文中的系外行星发现,并已使用多种检测方法或分析技术得到证实。

这个艺术家的概念图是一颗木星质量的行星,围绕着距离地球10.5光年的天苑四(Epsilon Eridani)运行。

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什么是系外行星?

宇宙里程碑:NASA确认5,000颗系外行星

影像来源:NASA, ESA, and G. Bacon (STScI)

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