Hello, World is a photograph of Earth taken by NASA astronaut Reid Wiseman aboard the Orion spacecraft during the Artemis II mission, published on April 3, 2026. [ 1 ] [ 2 ] [ 3 ] The photo shows Earth as a disk, [ 1 ] but not a complete hemisphere . [ 4 ] It was captured during the first leg of the spacecraft's outbound journey toward the Moon. It and a preceding lower- exposure snapshot by Wiseman are the first photographs of a full Earth disk taken by a human since 1972, when The Blue Marble was taken by the Apollo 17 crew. [ 2 ] The photograph shows the night-side of the Earth. Although the Earth is still illuminated by the full moon , it is quite dark compared to a Sun-lit Earth. Thus, Wiseman photographed it with a longer exposure. [ 5 ] The image shows Earth at night illuminated by moonlight from a full Moon . Africa dominates the left of the frame, with the Sahara largely unobscured by cloud cover and parts of Europe visible to the north; the Iberian Peninsula appears at the lower left. The Atlantic Ocean is visible, with South America to the right. [ 2 ] City lights are visible across the night side, while a bright lens flare near the center is caused by window reflection. The image is rotated about 146° from a standard north-up orientation, and the outlines of Integrity ' s windows are visible as dark cutouts along the edges of the frame. Along Earth's limb, the upper atmosphere appears as a thin band of airglow . Auroras are visible near both poles. Sunlight refracted along the horizon produces a faint afterglow and is reflected in space by interplanetary medium as the zodiacal light . The sodium layer is visible around the disk with its characteristic layer of yellow airglow . Additionally lightning on Earth and flares of satellites in orbit are discernible, particularly through the timelapse of the series of similar photos. [ 6 ] Venus appears as a bright point in the bottom-right section of the photo. [ 2 ] [ 7 ] [ 8 ] The Sun, Saturn , Neptune , Mars and Mercury are all hidden behind the Earth. The constellation Cetus appears to the right of Earth, the brightest star being Tau Ceti . Pegasus is in the lower left and Aquarius in the upper left. The photograph was taken on April 3, 2026, [ a ] [ 9 ] about a day after launch and shortly after completion of the trans-lunar injection burn that placed Orion on a free-return trajectory toward the Moon. [ 10 ] Wiseman captured the image through a spacecraft window using a Nikon D5 camera with a long exposure ( f /4 , ISO 51,200, 1/4-second shutter speed ). The Orion spacecraft was around 9,889 km (6,145 mi) from Earth's surface. [ 11 ] [ b ] NASA also released a lower-exposure "night" version of the image, taken shortly beforehand by Wiseman, which emphasizes city lights and reduces reflected glare. [ 12 ] The title " Hello, World " alludes to the crew's greeting and to the traditional test message used in computer programming . [ 13 ] First images of Earth from space List of notable images of Earth from space List of photographs considered the most important Earthset , another photograph from the Artemis II mission, taken by Christina Koch on April 6, 2026 Earthrise , photograph by William Anders from the 1968 Apollo 8 mission ↑ The EXIF date and time information is April 3, 2026, 00:27:39 UTC . ↑ The image metadata indicates that it was taken using a Nikon D5 camera with a 14–24 mm f/2.8 lens at an aperture of f/4, an exposure time of 1/4 second, and an ISO setting of 51,200; the exposure was set manually and the image was later processed using Adobe Photoshop Lightroom Classic . 1 2 Miller, Katrina (April 3, 2026). "NASA Unveils 1st Earth Photos From Artemis II Moon Mission: 'You Look Beautiful.' " . The New York Times . Retrieved April 5, 2026 . 1 2 3 4 Ferreira Santos, Sofia (April 3, 2026). "Artemis II crew now halfway to Moon as they take 'spectacular' image of Earth" . BBC News . Archived from the original on April 5, 2026 . Retrieved April 5, 2026 . ↑ Breen, Kerry (April 3, 2026). "NASA shares first photos of Earth taken by Artemis II: "Hello, World" " . CBS News . Retrieved April 3, 2026 . ↑ Westlake, Andy (April 4, 2026). "The Artemis Earth photo is incredible – but the one thing that nobody is telling you about it will blow your mind" . Amateur Photographer . Archived from the original on April 17, 2026 . Retrieved April 12, 2026 . ↑ Poole, Robert (April 8, 2026). "How Artemis II's Earthset photo compares with the iconic Earthrise image from 1968" . The Conversation . Archived from the original on April 12, 2026 . Retrieved April 10, 2026 . ↑ Berger, Eric (May 6, 2026). "The animated version of the iconic "Hello, world" image reveals striking new details" . Ars Technica . Archived from the original on May 8, 2026 . Retrieved May 7, 2026 . ↑ Ernst, Nico (April 4, 2026). "What NASA's images of Earth show and how they were taken" . heise online . Archived from the original on April 5, 2026 . Retrieved April 10, 2026 . ↑ "APOD: 2026 April 4 – Hello World" . Astronomy Picture of the Day . April 2, 2026. Archived from the original on April 11, 2026 . Retrieved April 10, 2026 . ↑ "Earth From the Perspective of Artemis II" . NASA . art002e000192. Archived from the original on April 3, 2026 . Retrieved April 3, 2026 . ↑ "Hello, World" . NASA . April 3, 2026 . Retrieved April 3, 2026 . ↑ Stout, Andy (April 5, 2026). "A tale of two photos: Artemis II's Hello World and Apollo 17's Blue Marble" . RedShark News . Archived from the original on April 7, 2026 . Retrieved April 6, 2026 . ↑ @NASA (April 3, 2026). "These two images were taken by @astro_reid only minutes apart. The stark difference is the result of camera settings. In the first, a longer shutter speed let in much more light from Earth, while the shorter shutter speed in the second emphasizes our planet's nighttime glow" ( Tweet ) – via X (formerly Twitter) . ↑ "Artemis II" . Global Security . April 2, 2026. Archived from the original on April 7, 2026 . Retrieved April 6, 2026 . 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