Digest of NASA Image of the Day

by brian.dunbar@nasa.gov (Brian Dunbar)

Issue Sat, Jan 03 09:30 AM

Hubble Glimpses Galactic Gas Making a Getaway

This NASA/ESA Hubble Space Telescope image features the galaxy NGC 4388, a member of the Virgo galaxy cluster.

Curiosity Sends Holiday Postcard from Mars

NASA’s Curiosity Mars rover used its black-and-white navigation cameras to capture panoramas at two times of day on Nov. 18, 2025, spanning periods that occurred on both the 4,722nd and 4,723rd Martian days, or sols, of the mission. The panoramas were captured at 4:15 p.m. on Sol 4,722 and 8:20 a.m. on Sol 4,723 (both at local Mars time), then merged together. Color was later added for an artistic interpretation of the scene with blue representing the morning panorama and yellow representing the afternoon one.

A Galactic Embrace

Data from NASA’s James Webb Space Telescope and Chandra X-ray Observatory come together in this eye-catching photo of colliding spiral galaxies released on Dec. 1, 2025.


Issue Sat, Dec 27 09:30 AM

Studying Physics in Microgravity

Tiny ball bearings surround a larger central bearing during the Fluid Particles experiment, conducted inside the Microgravity Science Glovebox (MSG) aboard the International Space Station’s Destiny laboratory module.

Santa Visits Artemis II Rocket

NASA engineer Guy Naylor poses for a photograph wearing a custom Santa Claus suit on the 19th level of High Bay 4 inside the Vehicle Assembly Building with NASA's integrated Moon rocket behind him at the agency’s Kennedy Space Center in Florida on Thursday, Dec. 11, 2025.

Artemis II Crew Launch Day Rehearsal

From left to right, CSA (Canadian Space Agency) astronaut Jeremy Hansen and NASA astronauts Christina Koch, Victor Glover, and Reid Wiseman are seen as they depart the Neil A. Armstrong Operations and Checkout Building to board their Orion spacecraft atop NASA’s Space Launch System rocket inside the Vehicle Assembly Building as part of the Artemis II countdown demonstration test, Saturday, Dec. 20, 2025, at NASA’s Kennedy Space Center in Florida.

A Dance of Galaxies

These two galaxies are named NGC 4490 and NGC 4485, and they’re located about 24 million light-years away in the constellation Canes Venatici (The Hunting Dogs). They are the closest known interacting dwarf-dwarf galaxy system where astronomers have observed the interactions between them, as well as been able to resolve the stars within.


Issue Sat, Dec 20 09:30 AM

Water Droplet Science

NASA astronaut Don Pettit demonstrates electrostatic forces using charged water droplets and a knitting needle made of Teflon.

NASA Lab Completes Engine Checks on New Aircraft

Justin Hall, left, controls a subscale aircraft as Justin Link holds the aircraft in place during preliminary engine tests on Friday, Sept. 12, 2025, at NASA’s Armstong Flight Research Center in Edwards, California. Hall is chief pilot at the center’s Dale Reed Subscale Flight Research Laboratory and Link is a pilot for small uncrewed aircraft systems.

Massive Stars Make Their Mark in Hubble Image

This NASA/ESA Hubble Space Telescope image features the blue dwarf galaxy Markarian 178 (Mrk 178) against a backdrop of distant galaxies in all shapes and sizes. Some of these distant galaxies even shine through the diffuse edges of Mrk 178.

Peekaboo!

Clockwise from left, JAXA (Japan Aerospace Exploration Agency) astronaut Kimiya Yui and NASA astronauts Jonny Kim, Zena Cardman, and Mike Fincke pose for a playful portrait through a circular opening in a hatch thermal cover aboard the International Space Station on Sept. 18, 2025.

Bassac River, Southern Vietnam

The Bassac River surrounds Cù Lao Dung, a river islet district in southern Vietnam, before emptying into the South China Sea.


Issue Sat, Dec 13 09:30 AM

The Calabash clash

The Calabash Nebula, pictured here — which has the technical name OH 231.8+04.2 — is a spectacular example of the death of a low-mass star like the Sun. This image taken by the NASA/ESA Hubble Space Telescope shows the star going through a rapid transformation from a red giant to a planetary nebula, during which it blows its outer layers of gas and dust out into the surrounding space. The recently ejected material is spat out in opposite directions with immense speed — the gas shown in yellow is moving close to a million kilometres an hour. Astronomers rarely capture a star in this phase of its evolution because it occurs within the blink of an eye — in astronomical terms. Over the next thousand years the nebula is expected to evolve into a fully fledged planetary nebula. The nebula is also known as the Rotten Egg Nebula because it contains a lot of sulphur, an element that, when combined with other elements, smells like a rotten egg — but luckily, it resides over 5000 light-years away in the constellation of Puppis (The Poop deck).

Stellar Jet

Webb’s image of the enormous stellar jet in Sh2-284 provides evidence that protostellar jets scale with the mass of their parent stars—the more massive the stellar engine driving the plasma, the larger the resulting jet.

NASA Astronaut Jonny Kim Returns to Earth

The Soyuz MS-27 spacecraft is seen as it lands in a remote area near the town of Zhezkazgan, Kazakhstan with Expedition 73 NASA astronaut Jonny Kim, and Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritsky aboard, Tuesday, Dec. 9, 2025.

Sprites Over Château de Beynac

A flash of lightning, and then—something else. High above a storm, a crimson figure blinks in and out of existence. If you see it, you are a lucky witness of a sprite, one of the least-understood electrical phenomena in Earth’s upper atmosphere.

XRISM Finds Chlorine, Potassium in Cas A

This composite image of the Cassiopeia A (or Cas A) supernova remnant, released Jan. 8, 2024, contains X-rays from Chandra (blue), infrared data from Webb (red, green, blue), and optical data from Hubble (red and white). A study by the XRISM (X-ray Imaging and Spectroscopy Mission) spacecraft has made the first-ever X-ray detections of chlorine and potassium in the wreckage.


Issue Sat, Dec 06 09:30 AM

Testing Drones for Mars in the Mojave Desert

Researchers from NASA's Jet Propulsion Laboratory in Southern California monitor a research drone in the Dumont Dunes area of the Mojave Desert in September 2025 as part of a test campaign to develop navigation software to guide future rotorcraft on Mars.

NASA’s Nancy Grace Roman Space Telescope Completed

Over the course of several hours, technicians meticulously connected the inner and outer segments of NASA’s Nancy Grace Roman Space Telescope.

Hubble Seeks Clusters in ‘Lost Galaxy’

This NASA/ESA Hubble Space Telescope image features the spiral galaxy NGC 4535.

Waxing Gibbous Moon

The waxing gibbous Moon rises above Earth’s blue atmosphere in this photograph taken from the International Space Station as it orbited 263 miles above a cloudy Atlantic Ocean off the coast of Quebec, Canada.

Sagittarius B2 Molecular Cloud

NASA's James Webb Space Telescope took a look at the Sagittarius B2 molecular cloud, the most massive, and active star-forming region in our galaxy, located only a few hundred light years from our central supermassive black hole.


Issue Sat, Nov 29 09:30 AM

Newly Found Organics in Enceladus’ Plumes

NASA's Cassini spacecraft captured dramatic plumes, both large and small, spray water ice out from many locations along the famed 'tiger stripes' near the south pole of Saturn's moon Enceladus.

Artemis II Orion Spacecraft Stacked

NASA’s Artemis II Orion spacecraft with its launch abort system is stacked atop the agency’s SLS (Space Launch System) rocket in High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Monday, Oct. 20, 2025. The spacecraft will carry NASA astronauts Reid Wiseman, Victor Glover, Christina Koch, and CSA (Canadian Space Agency) astronaut Jeremy Hansen on a 10-day mission around the Moon and back in early 2026.

Red Spider Nebula

Using its Near-InfraRed Camera (NIRCam), NASA's James Webb Space Telescope has revealed never-before-seen details in the picturesque Red Spider Nebula with a rich backdrop of thousands of stars.

City Lights and Atmospheric Glow

The atmospheric glow blankets southern Europe and the northwestern Mediterranean coast, outlined by city lights. At left, the Po Valley urban corridor in Italy shines with the metropolitan areas of Milan and Turin and their surrounding suburbs.