哈勃捕捉到了土星的新图像，让你怀疑它是否是真的。这张图像非常清晰，看起来就像土星刚刚漂浮在太空中。它是什么。
This image of the ringed-planet was captured when Saturn was at its closest to Earth, some 1.36 billion km away (845 million miles) on June 20th, 2019. The crisp image was captured with Hubble's Wide Field Camera 3 (WFC3.)
这张环状行星的图片拍摄于2019年6月20日，当时土星离地球最近，大约13.6亿公里(8.45亿英里)。这张清晰的图像是由哈勃的广域相机3 (WFC3)拍摄的。
This is an artful image that wouldn't be out of place on a gallery wall. (As long as that gallery was curated by a space nerd.) But it's more than just pretty: it's scientific.
这是一个艺术的形象，非常适合挂在画廊的墙上(只要那个画廊是由一个太空迷策划的)。但它不仅仅是漂亮的：它是科学的。
The image is part of a program called Outer Planet Atmospheres Legacy(OPAL.) OPAL's goal is to accumulate long-baseline imagery of our Solar System's gas giant planets, to help us understand their atmospheres over time. This is the second yearly picture of Saturn as part of the OPAL program.
这张图片是名为“外行星大气遗产”(opal)项目的一部分。该项目的目标是积累太阳系气态巨行星的长基线图像，帮助我们了解它们随时间变化的大气。这是作为OPAL计划一部分，土星的第二张年度照片。
Saturn always looks so placid. Stately, even. But closer inspection reveals a lot going on there. When we think of storms and gas giants, we usually think of Jupiter, with its prominent horizontal storm bands, and of course, the Great Red Spot. But Saturn is a very active, stormy planet as well.
土星看起来总是那么平静，甚至是庄严的。但仔细观察就会发现很多。当我们想到风暴和气态巨行星时，我们通常会想到木星，它有显著的水平风暴带，当然还有大红斑。但土星也是一颗非常活跃、风暴不断的行星。
Thanks to the OPAL program, we know that a large hexagonal storm in the planet's north polar region has disappeared. And smaller storms come and go frequently. There are also subtle changes in the planet's storm bands, which are largely ammonia ice at the top.
多亏了OPAL计划，我们知道在土星北极地区有一场六边形的大风暴刚刚消失了。小风暴来去频繁。土星的风暴带也有微妙的变化，它们主要是顶部的氨冰。
But some features have persisted.
但是一些特性仍然存在。
Cassini spotted the hexagonal storm at Saturn's north pole, and that storm is still there. In fact, the Voyager 1 spacecraft was first to spot that feature back in 1981.
卡西尼号在土星的北极发现了这场六边形风暴，而这场风暴至今仍在那里。事实上，旅行者1号宇宙飞船早在1981年就发现了这一特征。
Mostly though, this new Hubble image of Saturn is just beautiful. Even if you knew nothing about Saturn, its beauty would draw you in.
不过，这张哈勃拍摄的土星的新照片非常漂亮。即使你对土星一无所知，它的美丽也会吸引你。
NASA also released an annotated, more informational version of the Hubble image.
美国航天局还发布了哈勃图像的一个注释版，提供了更多的信息。
图片来源:NASA
