Liftoff of Vulcan with the Peregrine moon lander is set for Monday, Jan. 8, at 2:18 a.m. EST (0718 GMT).

火神号与游隼月球着陆器定于美国东部时间 1 月 8 日星期一凌晨 2:18（格林尼治标准时间 0718）升空。

Update for 3:30 am ET: The United Launch Alliance successfully launched its first Vulcan Centaur rocket into space early Jan. 8, carrying the private Astrobotic Peregrine moon lander and human remains on mission to the moon and deep space. The Peregrine lander separated as planned is on the way to the moon. Read our full wrap story here. Above is ULA's live webcast of the Vulcan Centaur upper stage's final mission to carry the Celestis Enterprise payload of human remains and DNA from Star Trek actors and alums into deep space.

美国东部时间凌晨 3:30 更新：联合发射联盟于 1 月 8 日成功将第一枚火神半人马座火箭送入太空，运载着私人 Astrobotic Peregrine 月球着陆器和人类遗骸，执行前往月球和深空的任务。按计划分离的游隼着陆器正在前往月球的途中。在这里阅读我们的完整故事。上图是 ULA 的网络直播，内容是火神半人马座上层的最后一次任务，即将塞莱斯蒂斯企业号的有效载荷以及《星际迷航》演员和校友的 DNA 运送到深空。

After weeks of delays, the United Launch Alliance is ready to launch its first-ever Vulcan rocket — a test flight that will also send a private lunar lander to the moon in another first — but if you're hoping to watch the historic liftoff, you'll need to know when and how. For that, space fans, we've got you covered. 

经过数周的拖延，联合发射联盟准备发射其第一枚火神火箭——这是一次试飞，这也将是另一个首次将私人月球着陆器送上月球——但如果您希望观看历史性的升空，您需要知道何时以及如何进行。为此，太空迷们，我们已经为您提供了帮助。

The Vulcan Centaur rocket will launch from ULA's Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida at 2:18 a.m. EST (0718 GMT) on its Cert-1 mission to prove its readiness for commercial and government flights. You can watch the Vulcan rocket launch live online, courtesy of NASA and ULA, beginning at 1:30 a.m. EST (0630 GMT).

Vulcan Centaur 火箭将于美国东部时间凌晨 2 点 18 分（格林尼治标准时间 0718）从位于佛罗里达州卡纳维拉尔角太空部队站的 ULA 太空发射综合体 41 发射升空，执行其 Cert-1 任务，以证明其已做好商业和政府飞行的准备。您可以在美国东部时间凌晨 1:30（格林尼治标准时间 0630）开始在线观看由 NASA 和 ULA 提供的火神火箭发射直播。

The rocket is also carrying the Peregrine moon lander, a private mission built by the U.S. company Astrobotic that is carrying six experiments for NASA as the first flight of the agency's Commercial Lunar Payload Services program. The mission will attempt the first U.S. moon landing since Apollo 17 in 1972, and will be the first private mission ever to land on the moon safely, if successful.

该火箭还搭载了游隼月球着陆器，这是由美国 Astrobotic 公司建造的私人任务，为 NASA 进行了六项实验，作为该机构商业月球有效载荷服务计划的首次飞行。该任务将尝试自 1972 年阿波罗 17 号以来美国首次登月，如果成功的话，将成为有史以来第一个安全登陆月球的私人任务。

Astrobotic's Peregrine is also carrying a dozen other payloads to the moon for paying customers, including a package for the delivery service DHL, a digital art gallery, and human DNA samples and cremated remains for space burial companies Celestis and Elysium.

Astrobotic 的 Peregrine 还为付费客户运送了十几个其他有效载荷到月球，包括为 DHL 送货服务、数字艺术画廊提供的包裹，以及为太空埋葬公司 Celestis 和 Elysium 提供的人类 DNA 样本和火化遗骸。

WHAT TIME IS ULA'S FIRST VULCAN CENTAUR LAUNCH?

Currently, ULA is targeting Jan. 8 at 2:18 a.m. EST (0718 GMT) to launch the first Vulcan Centaur test flight, but the launch could happen anytime within a 45-minute window that closes at 3:03 a.m. EST (0803 GMT). The mission was previously scheduled to launch on Dec. 24, but ULA postponed it to January to make room for a full fueling rehearsal.

ULA 的首次 Vulcan Centaur 发射时间是什么时候？目前，ULA 的目标是美国东部时间 1 月 8 日凌晨 2:18（格林威治标准时间 0718）启动首次 Vulcan Centaur 试飞，但发射可能在 45 分钟窗口内的任何时间进行。美国东部时间凌晨 3:03（格林尼治标准时间 0803）。该任务原定于 12 月 24 日发射，但 ULA 将其推迟到 1 月，以便为全面的加油排练腾出空间。

This is the longest of ULA's launch windows for its four flight opportunities this week, which includes backup dates on Jan. 9, 10 and 11. The launch windows for those backup dates are 9 minutes, 1 minute and 3 minutes, respectively.

这是 ULA 本周四次飞行的发射窗口中最长的一个，其中包括 1 月 9 日、10 日和 11 日的备份日期。这些备份日期的发射窗口分别为 9 分钟、1 分钟和 3 分钟。

The forecast for a launch on Jan. 8 promises the best weather conditions for  the four launch opportunities this week. There is an 85% chance of good weather on the Jan. 8  launch day, but the chance of good weather drops to 40% on Jan. 9 due to thick clouds, and is at 45% for both Jan. 10 and 11, according to Melody Lovin, launch weather officer for the Cape Canaveral Space Force Station’s 45th Weather Squadron. 

预计 1 月 8 日的发射将为本周的四次发射提供最佳天气条件。据报道，1 月 8 日发射日有 85% 的好天气机会，但由于云层厚重，1 月 9 日好天气的机会降至 40%，1 月 10 日和 11 日均为 45%。梅洛迪·洛文 (Melody Lovin)，卡纳维拉尔角太空部队站第 45 气象中队的发射气象官。

CAN YOU WATCH ULA'S 1ST VULCAN LAUNCH ONLINE?

Yes, you can watch ULA's Vulcan Centaur Cert-1 test flight launch online. 

您可以在线观看 ULA 的第一次 VULCAN 发射吗？是的，您可以在线观看 ULA 的 Vulcan Centaur Cert-1 试飞发射。

Because NASA has several experiments riding to the moon Vulcan's payload, the Peregrine moon lander, the U.S. space agency will provide a live webcast of the launch. With liftoff currently set at 2:18 a.m. EST, NASA's webcast will begin at 1:30 a.m. EST (0630 GMT).  You'll be able to watch the webcast live in the window at the top of this page, or directly from the NASA+ app, NASA YouTube channel and NASA TV broadcast. 

由于美国国家航空航天局 (NASA) 正在进行多项登月实验，因此美国宇航局将对此次发射进行网络直播。目前升空时间为美国东部时间凌晨 2:18，NASA 的网络广播将于美国东部时间凌晨 1:30（格林尼治标准时间 0630）开始。您可以在本页顶部的窗口中观看网络直播，也可以直接从 NASA+ 应用程序、NASA YouTube 频道和 NASA 电视广播观看。

ULA will also host its own webcast, which you can also find at ULA's YouTube channel, as well as ULA's Vulcan Centaur Cert-1 mission page. 

ULA 还将举办自己的网络广播，您也可以在 ULA 的 YouTube 频道以及 ULA 的 Vulcan Centaur Cert-1 任务页面上找到该网络广播。

Both webcasts should cover the last hour before launch, and then follow the Vulcan Centaur rocket through launch, stage separation and its first major milestones in orbit. The Peregrine moon lander is scheduled to separate from Vulcan's Centaur upper stage four hours and 24 minutes after launch, but ULA may end its livestream before that milestone and likely share updates via X, formerly Twitter.

两个网络广播都应涵盖发射前的最后一个小时，然后跟踪火神半人马座火箭的发射、阶段分离及其在轨道上的第一个主要里程碑。 Peregrine 月球着陆器计划在发射后 4 小时 24 分钟与 Vulcan 的半人马座上级分离，但 ULA 可能会在此里程碑之前结束直播，并可能通过 X（以前称为 Twitter）分享更新。

HOW LONG IS ULA'S 1ST VULCAN CENTAUR ROCKET MISSION?

From launch to end of mission, ULA's Vulcan Centaur Cert-1 test flight is expected to last about 4 hours and 24 minutes, according to a mission overview. During that period, the Vulcan rocket will launch, shed its first stage and deploy the Peregrine moon lander about 50 minutes after liftoff to put it on a so-called "translunar" trajectory that will take it to the moon. The Centaur upper stage, meanwhile, will continue on its own into deep space to ultimate orbit the sun.

ULA 的第一次火神半人马火箭任务需要多长时间？根据任务概述，从发射到任务结束，ULA 的火神半人马 Cert-1 试飞预计将持续约 4 小时 24 分钟。在此期间，火神火箭将发射，卸下第一级，并在升空后约 50 分钟部署游隼月球着陆器，使其走上所谓的“跨月”轨道，将其带到月球。与此同时，半人马座上级将继续自行进入深空，最终绕太阳运行。

If all goes well, Peregrine will land on the moon on Feb.23 in a region known as Sinus Viscositatis, or the Bay of Stickiness, which is near a set of features called the Gruitheisen domes. Below is a timeline of the Vulcan Centaur Cert-1 test flight.

如果一切顺利，Peregrine 将于 2 月 23 日在月球上一个被称为粘性湾 (Sinus Viscositatis) 或粘性湾 (Bay of Stickiness) 的地区着陆，该地区靠近一组被称为格鲁伊森圆顶 (Gruitheisen domes) 的地貌。以下是 Vulcan Centaur Cert-1 试飞的时间表。

WHAT IF ULA'S VULCAN CENTAUR ROCKET CAN'T LAUNCH?

If ULA cannot launch the Vulcan rocket's Cert-1 mission on Jan. 8, the company can try again for three more days before standing down for several weeks. ULA has a four day window in which to launch the mission, with opportunities on Jan. 8, 9, 10 and 11.

"Those four days are the opportunities," said Gary Wentz, ULA vice president of government and commercial programs, told reporters on Friday (Jan. 5). "Obviously, as we go through the flow, the number of back-to-back attempts will depend on how far we go into the count, and how much fuel and commodities we consume in the process, assuming it is a weather delay or something like that." A technical glitch or issue could lead to more lengthy delays.

时间（小时:分:秒）事件T-0:00:04.9BE-4发动机点火T+0:00:01.1LIftoffT+0:00:07.9俯仰/偏航机动T+0:01:09.9马赫1T+0:01: 16.1Max QT+0:01:50.3SRB JettisonT+0:04:58.9助推器发动机关闭T+0:05:05助推器/半人马座级分离T+0:05:14.9半人马座主发动机启动T+0:05:23有效载荷整流罩抛弃T+0 :15:45.4半人马一号主机停机(MECO)T+0:43:35>7半人马二号主机启动T+0:47:37半人马二号主机停机T+0:50:26游隼分离T+1:18:23.9半人马三号主发动机启动T+1:18:43.8半人马座第三主发动机关闭T+4:24:44.5任务结束如果ULA的VULCAN CENTAUR火箭无法发射怎么办？如果ULA无法在1月8日发射Vulcan火箭的Cert-1任务，该公司可以再尝试三天，然后再休息几周。 ULA 有四天的时间来启动任务，其中有机会在 1 月 8 日、9 日、10 日和 11 日。“这四天就是机会，”ULA 政府和商业项目副总裁加里·温茨 (Gary Wentz) 告诉记者周五（1 月 5 日）。 “显然，当我们进行流程时，连续尝试的次数将取决于我们计数的程度，以及我们在此过程中消耗的燃料和商品的数量，假设是由于天气延误或其他原因像那样。”技术故障或问题可能会导致更长时间的延误。

The chart below shows the launch times and length of the launch window for each day in the window. The launch window length is determined by the orbital mechanics required for Vulcan to launch Astrobotic's Peregrine lander to the moon. 

下图显示了窗口中每天的启动时间和启动窗口时长。发射窗口长度取决于 Vulcan 将 Astrobotic 的 Peregrine 着陆器发射到月球所需的轨道力学。

If ULA is unable to launch the Vulcan Cert-1 mission its four-day window, the company would have to wait until Jan. 23 to try again due to the orbital mechanics needed to deliver the Peregrine lander to the moon, Wentz said.

Vulcan Cert-1 启动窗口日期和时间启动日期启动时间窗口长度东部时间一月星期一 82:18 (0718 GMT)45 分钟东部时间一月星期二 912:15 a.m. (0715 GMT)9 分钟东部时间 1 月 1012 年星期三:12 a.m. EST (0712) GMT）1 分钟美国东部时间 1 月 1112 年星期四上午 11 点（0714 GMT）3 分钟如果 ULA 无法在四天的时间内启动 Vulcan Cert-1 任务，该公司将不得不等到 1 月 23 日才能重试，因为温茨说，将游隼着陆器送上月球所需的轨道力学。

 Correction: This article was updated Jan. 7 to correct the timing of events for the Peregrine moon lander separation and end of mission for the Vulcan Centaur test flight. The Peregrine lander will separate about 50 minutes after liftoff while the Centaur upper stage will end its mission 4 hours and 24 minutes after liftoff.

更正：本文于 1 月 7 日更新，以更正游隼月球着陆器分离事件和火神半人马座试飞任务结束的时间。游隼着陆器将在升空后约 50 分钟分离，而半人马座上级将在升空后 4 小时 24 分钟结束任务。

Correction: This article was updated Jan. 7 to correct the timing of events for the Peregrine moon lander separation and end of mission for the Vulcan Centaur test flight. The Peregrine lander will separate about 50 minutes after liftoff while the Centaur upper stage will end its mission 4 hours and 24 minutes after liftoff.

更正：本文于 1 月 7 日更新，以更正游隼月球着陆器分离事件和火神半人马座试飞任务结束的时间。游隼着陆器将在升空后约 50 分钟分离，而半人马座上级将在升空后 4 小时 24 分钟结束任务。

Editor's note: Tune in to Space.com on Monday, Jan. 8 to watch ULA's first-ever Vulcan Centaur rocket launch Astrobotic's Peregrine moon lander at 2:18 a.m. EDT (0718 GMT). The live webcast is expected to start at 1:30 a.m. EST (0630 GMT). 

编者注：请于 1 月 8 日星期一收听 Space.com，观看 ULA 首个 Vulcan Centaur 火箭于美国东部时间凌晨 2:18（格林尼治标准时间 0718）发射 Astrobotic 的 Peregrine 月球着陆器。网络直播预计于美国东部时间凌晨 1:30（格林尼治标准时间 0630）开始。