NASA需要π！

NASA uses pi every day!

Pi is instrumental in developing the size of parachutes to land on the Red Planet. In fact, pi helps engineers determine how big the parachute needs to be in order to generate the drag needed to slow down craft landing on Mars. It also helps researchers map and explore Earth and planets in our own and other solar systems.

In this June 2017 photo, the supersonic parachute design that landed the Perseverance Mars rover on Mars on Feb. 18, 2021, underwent testing in a wind tunnel at NASA’s Ames Research Center.

Want more? Have a Cosmic Piece of Pi!

Explore some of the many ways that NASA uses pi to explore our home and the universe.

Image Credit: NASA/JPL-Caltech/Ames

NASA每天都在使用π!

π在开发降落在红色星球上的降落伞大小方面发挥了重要作用。事实上，π帮助工程师们确定需要多大的降落伞才能产生所需的阻力，使航天器在火星着陆时减速。它还帮助研究人员绘制和探索地球和我们太阳系和其他太阳系中的行星。

在这张2017年6月的照片中，毅力号火星车于2021年2月18日在火星上着陆的超音速降落伞设计，在美国宇航局艾姆斯研究中心的风洞中进行了测试。

想要更多吗？拥有一片宇宙的π!

探索美国宇航局利用π探索我们的家园和宇宙的许多方法。

影像来源：NASA/JPL-Caltech/Ames