带着冰冷的目光前往水星——1973年11月10日的《科学新闻》

　　水星ho !水手10号已经在路上了。金星也一样。水手号于美国东部时间11月3日凌晨12点45分发射，将于2月5日经过距离金星3330英里的地方。然后，它将成为第一个使用一种技术的航天器，这种技术是让一颗行星的引力场将其轨道转向另一个目标。当然，那是水星，它将在不到两个月后到达那里。

　　

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　　Update

　　Mariner 10 arrived on schedule, becoming the first probe to visit Mercury and map a portion of its cratered, moonlike terrain. The gravity assist that Mariner used to reach its destination is now a trusted way to get around the solar system (SN: 7/12/15; SN: 7/5/18). NASA’s MESSENGER spacecraft used gravity assists from Mercury, Venus and Earth to reach an orbit around Mercury in 2011, where the probe mapped the rest of the planet’s surface, uncovered evidence of past volcanism and spotted signs of water ice and organic compounds (SN: 11/29/11; SN: 3/22/12; SN: 11/30/12).

　　Today, the international BepiColombo mission is using gravitational assists from Mercury — following one from Earth and two from Venus — to steer itself into eventual orbit around the planet (SN: 1/15/21). Beginning in 2025, BepiColombo will investigate Mercury’s innards and magnetic field.

　　Questions or comments on this article? E-mail us at?[email?protected] | Reprints FAQ

　　A version of this article appears in the November 4, 2023 issue of Science News.

　　Christopher Crockett is an Associate News Editor. He was formerly the astronomy writer from 2014 to 2017, and he has a Ph.D. in astronomy from the University of California, Los Angeles.

　　

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