Blog

Andromeda Galaxy
Chandra X-Ray Observatory
Galaxies
Marshall Astrophysics
Marshall Space Flight Center
The Universe
The Andromeda galaxy, also known as Messier 31 (M31), is the closest spiral galaxy to the Milky Way at a distance of about 2.5 million light-years. Astronomers use Andromeda to understand the structure and evolution of our own spiral, which is much harder to do since Earth is embedded inside the Milky Way. The galaxy […]
Posted June 26, 2025
Humans in Space
In-flight Education Downlinks
International Space Station (ISS)
Johnson Space Center
Learning Resources
NASA Headquarters
Editor’s Note: This advisory was updated Thursday, June 26, to note that the time of the event has changed to 12:50 p.m. EDT. Students attending the U.S. Space and Rocket Center Space Camp in Huntsville, Alabama, will have the chance to hear NASA astronauts aboard the International Space Station answer their prerecorded questions. At 12:50 […]
Posted June 25, 2025
International Space Station (ISS)
NASA astronaut Bob Hines took this picture of the waning crescent moon on May 8, 2022, as the International Space Station flew into an orbital sunrise 260 miles above the Atlantic Ocean off the northwest coast of the United States. Since the station became operational in November 2000, crew members have produced hundreds of thousands […]
Posted June 25, 2025
Earth
Moderate Resolution Imaging Spectroradiometer (MODIS)
NASA satellite data and citizen science observations combine for new findings on bird populations.
Posted June 25, 2025
Learning Resources
Grades 9 - 12
What are asteroids? Asteroids are rocky objects that orbit the Sun just like planets do. In fact, sometimes asteroids are called “minor planets.” These space rocks were left behind after our solar system formed about 4.6 billion years ago. Asteroids are found in a wide range of sizes. For example, one small asteroid, 2015 TC25, […]
Posted June 25, 2025
Jet Propulsion Laboratory
During his work on several historic missions, Casani rose through a series of technical and management positions, making an indelible mark on the nation’s space program.   John R. Casani, a visionary engineer who served a central role in many of NASA’s historic deep space missions, died on Thursday, June 19, 2025, at the age […]
Posted June 25, 2025
Johnson Space Center
International Space Station (ISS)
Johnson's Mission Control Center
People of Johnson
Editor’s note: This interview was conducted in October 2023.  As the International Space Station approaches 25 years of continuous human presence on Nov. 2, 2025, it is a meaningful moment to recognize those who have been there since the beginning—sharing the story of human spaceflight with the world.    If you have ever witnessed the live […]
Posted June 25, 2025
Perseverance (Rover)
Jet Propulsion Laboratory
Mars
In addition to drilling rock core samples, the science team has been grinding its way into rocks to make sense of the scientific evidence hiding just below the surface. On June 3, NASA’s Perseverance Mars rover ground down a portion of a rock surface, blew away the resulting debris, and then went to work studying […]
Posted June 25, 2025
Europa Clipper Resources
Science & Research
Explore This SectionScienceEuropa ClipperAlien OceanEuropa Clipper HomeMissionOverviewFactsHistoryTimelineScienceGoalsTeamSpacecraftMeet Europa ClipperInstruments Assembly Vault PlateMessage in a BottleNewsNews & FeaturesBlogNewsroomReplay the LaunchMultimediaFeatured MultimediaResourcesAbout EuropaWhy Europa?Europa Up CloseIngredients for Life
Posted June 25, 2025
Europa Clipper Resources
Researchers at NASA’s Jet Propulsion Laboratory are developing the Buoyant Rover for Under-Ice Exploration, a technology that could one day explore oceans under the ice layers of planetary bodies. The prototype was tested in arctic lakes near Barrow, Alaska.
Posted June 25, 2025
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