Mashable 02月14日
Firefly spacecraft provides striking view of Earth on top of Earth
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萤火虫航天公司的月球着陆器“蓝色幽灵”拍摄了一张引人注目的照片,展示了地球在太空中的倒影,宛如一面镜子。这张照片由着陆器上的太阳能板反射而成,呈现出两个蓝色地球的景象。该着陆器计划于3月2日尝试在月球着陆,此次任务是NASA商业月球有效载荷服务项目的一部分,旨在为未来的载人探月任务做准备。目前,任务进展顺利,但真正的挑战在于如何在没有GPS和稀薄大气的情况下安全着陆。

📸“蓝色幽灵”着陆器利用其镜面般光滑的太阳能板,反射出地球的壮丽景象,在太空中创造出独特的“地球倒影”。

🚀此次任务是NASA商业月球有效载荷服务项目的一部分,NASA已投资26亿美元与私营企业签订合同,将仪器运送到月球并获取关键数据,为未来的Artemis载人探月任务做准备。

👨‍🚀着陆月球极具挑战性,由于月球几乎没有大气层来减缓航天器的速度,且没有GPS系统引导,因此着陆过程非常复杂。目前只有Intuitive Machines一家公司成功完成了月球着陆。

Firefly Aerospace's moon-bound spacecraft has provided the closest thing to a reflecting pool in space, showing Earth as an imposing monument, stacked on top of another Earth

The illusion is a new photo taken earlier this week by the Blue Ghost lander, expected to attempt a touchdown on the moon on March 2. The image showcases two blue marbles, thanks to its mirror-smooth solar panel. 

The faint dot above Earth, which can be seen in the uncropped image below, is actually the moon, a destination to which it's since gotten much closer. Also pictured is the spacecraft's X-band antenna and a NASA instrument intended to capture the first global view of Earth's magnetic field.

Blue Ghost completed its translunar injection, a maneuver that puts the spacecraft on a moon-bound trajectory, on Feb. 8.

"It's a very precisely timed shot," said Joseph Marlin, deputy chief engineer, in a video update on the mission. "Think of it as kind of throwing to someone who's running across the field ahead of you. You have to kind of lead the shot."

This is the mission trajectory plan for Firefly Aerospace's Blue Ghost lander. Credit: Firefly Aerospace graphic

Firefly's lander, originally scheduled to lift off in late 2024, is the first NASA Commercial Lunar Payload Services mission of the year. The program has invested $2.6 billion in contracts with vendors from the private sector to help deliver instruments to the moon and send back crucial data. 

The company is carrying 10 experiments for the space agency. NASA wants to see a regular cadence of moon missions to prepare for astronaut-led Artemis expeditions in 2027 or later.

In an uncropped image, the moon is visible as a faint dot above Earth. Credit: Firefly Aerospace

After escaping Earth's gravitational pull, the journey takes about four days to arrive at the moon. But Firefly intends to spend a couple of weeks in lunar orbit before dropping Blue Ghost, named after an exotic type of firefly, to the surface. The procedure to descend is expected to take about one hour.

The mission seems to be going smoothly, but the team hasn't encountered the hardest part yet. Landing on the moon is onerous. The moon's exosphere provides virtually no drag to slow a spacecraft down as it approaches the ground. Furthermore, there are no GPS systems on the moon to help guide a craft to its landing spot. Then there's the fact that everything is about six times tippier on the moon to overcome.

So far just one company (as opposed to space agency), Intuitive Machines, has made the robotic journey all the way through lunar touchdown. Its craft landed sideways near the moon's south pole in February 2024, still managing to operate from its awkward position.

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萤火虫航天 蓝色幽灵 月球着陆 NASA 太空探索
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