Blog

What Are Asteroids? (Ages 14-18)

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

John Casani, Former Manager of Multiple NASA Missions, Dies

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

Meet Rob Navias: Public Affairs Officer and Mission Commentator

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

NASA’s Perseverance Rover Scours Mars for Science

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

Alien Ocean

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

Buoyant Rover for Under Ice Exploration

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

Europa Clipper Resources

Europa: Ocean World

Scientists think there is an ocean within Jupiter’s moon Europa. NASA-JPL astrobiologist Kevin Hand explains why scientists are so excited about the potential of this ice-covered world to answer one of humanity’s most profound questions.

Posted June 25, 2025

Europa Clipper Resources

Europa’s Stunning Surface

The puzzling, fascinating surface of Jupiter’s icy moon Europa looms large in this newly-reprocessed color view, made from images taken by NASA’s Galileo spacecraft in the late 1990s. This is the color view of Europa from Galileo that shows the largest portion of the moon’s surface at the highest resolution. The view was previously released […]

Posted June 25, 2025

Europa Clipper Resources

Science & Research

Reddish Bands on Europa

This colorized image of Europa is a product of clear-filter grayscale data from one orbit of NASA’s Galileo spacecraft, combined with lower-resolution color data taken on a different orbit.

Posted June 25, 2025

Europa Clipper Resources

Science & Research

Source Region for Possible Europa Plumes

This reprojection of the official USGS Europa basemap is centered at the estimated source region for potential plumes that might have been detected using the Hubble Space Telescope. The view is centered at -65 degrees latitude, 183 degrees longitude. In addition to the plume source region, the image also shows the hemisphere of Europa that […]

Posted June 25, 2025