旅行者1号下周将成为首个距地球一光日的人造物体，NASA希望我们届时向天空闪灯以示纪念。
Voyager 1 will become the first human-made object to reach one light-day from Earth next week, and NASA wants us to mark the occasion by flashing our lights at the sky.
这艘探测器上个月刚经历了一次通信故障，目前正以约每小时3.8万英里（6.1万公里）的速度飞行，并将在明年迎来发射50周年。在那之前，它还要再创下一项距离纪录。
The spacecraft, which suffered a communications hiccup last month, is traveling at approximately 38,000 mph (61,000 kph) and will mark the 50th anniversary of its launch next year. Before then, it has another distance record to set.
“光日”这个说法比16094799096英里（25902068356公里）要简洁一些。
"Light-day" is a bit snappier than 16,094,799,096 miles (25,902,068,356 kilometers).
NASA确定这一跨越时刻为美国东部时间11月18日（周三）05:16:07（协调世界时10:16:07）。
NASA puts the crossing at 05:16:07 EST (10:16:07 UTC) on Wednesday, November 18.
在“为旅行者号的光日闪耀”活动中，参与者被邀请在11月17日日落后，用手电筒或通过NASA网站，以摩尔斯电码闪出该任务的三个字母代号——VGR。
For "Shine Bright for Voyager's Light-Day," participants are invited to flash the mission's three-letter designation – VGR – in Morse code after sunset on November 17, using a flashlight or NASA's website.
据NASA介绍，这将形成“日落后环绕地球的一圈象征性的金色光波”。
According to the space agency, this will create "a symbolic wave of golden light encircling the planet after sunset."
这也是纪念这一成就的好方式——旅行者1号是距地球最远的人造物体，其非凡的寿命至今仍是过去与现在工程师技艺的明证。不过，旅行者1号并不能探测到地球上的任何手电筒光。
It is also a nice way to mark the achievement – Voyager 1 is the most distant human-made object from Earth, and its extraordinary longevity remains a testament to the skill of engineers past and present. Not that Voyager 1 will be able to detect any flashlights on Earth.
在拍下著名的“暗淡蓝点”照片后，它的相机早在几十年前就已关闭。NASA此前也曾邀请公众参与航天器拍照活动。
Its cameras were turned off decades ago, after the famous Pale Blue Dot image was captured. NASA has invited the public to join in a spacecraft photo opportunity before.
2013年7月19日，卡西尼号在环绕土星的轨道上拍摄了地球和月球，活动名为“地球微笑的那一天”，同时鼓励地球上的人们抬头仰望，“只为作为暗淡蓝点上的生命而活着的纯粹喜悦微笑”。
On July 19, 2013, Cassini photographed Earth and the Moon from its orbit around Saturn for "The Day the Earth Smiled," while people back home were encouraged to look up and "just smile at the sheer joy of being alive on a Pale Blue Dot."
旅行者1号的姊妹探测器旅行者2号预计还要再过九年才能达到同样的里程碑。它穿越太阳系时走了另一条路径，飞掠了天王星和海王星。
Voyager 2, the spacecraft's sibling, is not expected to reach the same milestone for another nine years. It took a different path through the solar system to swing past Uranus and Neptune.
不过，届时旅行者2号是否还能通信尚不确定——即便近来努力榨取探测器日益减少的电力，余量也已极其微薄。®
It will, however, be uncertain as to whether Voyager 2 will still be able to communicate by then – even with recent efforts to eke out the probe's dwindling power supply, margins are razor thin. ®