Newly Found Organics in Enceladus’ Plumes

Newly Found Organics in Enceladus’ Plumes

A black and white image of Enceladus' south pole. Several plumes of water ice spray up from the curved surface; they are visible as misty white spikes. Most of the south pole is dark, but a small sliver is lit up at bottom left.
NASA/JPL-Caltech/Space Science Institute

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 in this image released on Feb. 23, 2010. A study published in October 2025 analyzed data from NASA’s Cassini mission and found evidence of previously undetected organic compounds in a plume of ice particles like the ones seen here. The ice particles were ejected from the ocean that lies under Enceladus’ frozen shell. Researchers spotted not only molecules they’ve found before but also new ones that lay a potential path to chemical or biochemical activity.

Learn more about what they discovered.

Image credit: NASA/JPL-Caltech/Space Science Institute

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Monika Luabeya

NASA Astronaut Chris Williams, Crewmates Arrive at Space Station

NASA Astronaut Chris Williams, Crewmates Arrive at Space Station

The Soyuz rocket launches to the International Space Station with Expedition 74 crew members: NASA astronaut Chris Williams, and Roscosmos cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev, on Thursday, Nov. 27, 2025, at the Baikonur Cosmodrome in Kazakhstan.
NASA/Bill Ingalls

NASA astronaut Chris Williams, accompanied by Roscosmos cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev, safely arrived at the International Space Station on Thursday, expanding the orbiting laboratory’s crew to 10 for the next two weeks.

The trio launched aboard the Soyuz MS-28 spacecraft at 4:27 a.m. EST (2:27 p.m. Baikonur time) from the Baikonur Cosmodrome in Kazakhstan. After a three-hour, two-orbit journey, the spacecraft docked at 7:34 a.m. to the space station’s Rassvet module.

Following hatch opening, expected about 10:10 a.m., the new arrivals will be welcomed by the Expedition 73 crew, including NASA astronauts Mike Fincke, Zena Cardman, and Jonny Kim; JAXA (Japan Aerospace Exploration Agency) astronaut Kimiya Yui; and Roscosmos cosmonauts Sergey Ryzhikov, Alexey Zubritsky, and Oleg Platonov.

NASA’s live coverage of hatch opening begins at 9:50 a.m. on NASA+, Amazon Prime, and YouTube. Learn how to watch NASA content through a variety of platforms, including social media.

During his stay aboard the space station, Williams will conduct scientific research and technology demonstrations aimed at advancing human space exploration and benefiting life on Earth. He will help install and test a new modular workout system for long-duration missions, support experiments to improve cryogenic fuel efficiency and grow semiconductor crystals in space, as well as assist NASA in designing new re-entry safety protocols to protect crews during future missions.

Expedition 74 is scheduled to begin on Monday, Dec. 8, following the departure of Kim, Ryzhikov, and Zubritsky, as they conclude an eight-month science mission aboard the orbital outpost.

Watch the change of command ceremony at 10:25 a.m. on Sunday, Dec. 7, as station leadership transfers from Ryzhikov to Fincke, live on NASA+.

Learn more about International Space Station, crews, research, and operations at:

https://www.nasa.gov/station

-end-

Jimi Russell
Headquarters, Washington
202-358-1100
james.j.russell@nasa.gov

Sandra Jones / Joseph Zakrzewski
Johnson Space Center, Houston
281-483-5111
sandra.p.jones@nasa.gov / joseph.a.zakrzewski@nasa.gov

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Nov 27, 2025

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Lauren E. Low

PLANETS Units Have Landed – Free NASA-Funded Out-of-School Time Resources

PLANETS Units Have Landed – Free NASA-Funded Out-of-School Time Resources

4 min read

PLANETS Units Have Landed – Free NASA-Funded Out-of-School Time Resources

An out of school time educator holds a measuring tape as an elementary aged girl drops a weight to test the space craft shield her group created. Her group members, two boys and one girl, watch as she drops the weight.
Constructing a three dimensional topographic map from the Remote Sensing Science Pathway.

The NASA Science Activation program’s PLANETS (Planetary Learning that Advances the Nexus of Engineering, Technology, and Science) project, led by Northern Arizona University (NAU), is pleased to announce the official launch of three free out-of-school (OST) time units that give all learners in grades 3-5 and 6-8 the chance to do real planetary science and engineering. These units are supported by comprehensive educator guides, videos, and resources.

These three units – Space Hazards, Water in Extreme Environments, and Remote Sensing – have complementary engineering and science pathways that can be taught on their own or together. Subject matter experts in planetary science from the USGS Astrogeology Science Center were involved in every part of developing the activities, working with STEM (Science, Technology, Engineering, & Mathematics) education experts from Northern Arizona University Center for STEM Teaching & Learning, the Boston Museum of Science, and WestEd to ensure the activities are educational, engaging, and accurate.

PLANETS intentionally designed the units to benefit all learners. The curriculum reflects research-based pedagogical strategies, including those for multilingual learners, Indigenous learners, and learners with differing physical abilities. The units have been tested extensively in out-of-school time programs across the country and revised based on their feedback to ensure the needs of all learners are met. PLANETS provides a practical guide for out-of-school time educators with useful advice to effectively teach all students. All units also include educator background on the subject matter, as well as videos, and many useful tips and links to relevant NASA projects and resources.

“PLANETS is one of the most thoughtfully designed STEM resources I’ve used in an out-of-school setting. The hands-on activities are engaging, accessible, and grounded in real-world challenges that spark curiosity in every learner. What sets it apart is the intentional support for diverse learners and the clear, practical guidance for facilitators—making it truly turnkey for OST educators at any experience level. If you’re looking to build STEM identity, teamwork, and creative problem-solving in your program, PLANETS is a must.” ~ Kara Branch, CEO & Founder, Black Girls Do Engineer

In the Space Hazards unit, intended for learners in grades 3-5, students play a card game to learn about how to protect against the different hazards that people face on Earth and that astronauts and robotic probes face in space. The engineering pathway for this unit presents students with a challenge: design a space glove that will keep astronauts safe while still allowing them to do their work.

The Water in Extreme Environments unit is designed for grades 6-8. In the science pathway, students use planet “water cards” to learn where there is the most water in our solar system (hint: it’s not Earth!). The engineering pathway introduces learners to the scarcity of fresh water, both in extreme environments on Earth and for astronauts in space. Students design a filtration system to purify water for reuse.

The engineering pathway for the Remote sensing unit, also designed for grades 6-8, puts students into the shoes of NASA spacecraft engineers, designing remote sensing devices to learn about the surface of planets, like Mars. The science pathway then uses real NASA remote sensing data from Mars landing site candidates to choose the best place to land a rover on Mars.

All PLANETS materials are available at no cost on the website: planets-stem.org. Check them out and empower every learner to see themselves as scientists and engineers.

PLANETS is supported by NASA under cooperative agreement award number NNX16AC53 and is part of NASA’s Science Activation Portfolio. Learn more about how Science Activation connects NASA science experts, real content, and experiences with community leaders to do science in ways that activate minds and promote deeper understanding of our world and beyond: https://science.nasa.gov/learn/about-science-activation/.

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Nov 26, 2025
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NASA Science Editorial Team

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Artemis II Orion Spacecraft Stacked

Artemis II Orion Spacecraft Stacked

The orange core stage of the Artemis II rocket with white boosters on each side fully stacked inside the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida on Saturday, Oct. 18, 2025.
NASA/Kim Shiflett

In this Oct. 20, 2025, photo, NASA’s Artemis II Orion spacecraft with its launch abort system is stacked atop the agency’s SLS (Space Launch System) rocket in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida.

Orion 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.

Follow along with the mission on the NASA Artemis blog.

Image credit: NASA/Kim Shiflett

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Monika Luabeya

LSAH Newsletter

LSAH Newsletter

1 min read

Preparations for Next Moonwalk Simulations Underway (and Underwater)

Reid Wiseman in the station’s Destiny lab.
Reid Wiseman finds a little peace and quiet in the station’s Destiny lab.
NASA

The Lifetime Surveillance of Astronaut Health (LSAH) program collects, analyzes, and interprets medical, physiological, hazard exposure, and environmental data for the purpose of maintaining astronaut health and safety as well as preventing occupationally induced injuries or disease related to space flight or space flight training. It allows NASA to effectively understand and mitigate the long-term health risks of human spaceflight, as well as support the physical and mental well-being of astronauts during future exploration missions.

The LSAH Newsletter serves to inform and update former astronauts on how their medical data is being utilized by the LSAH team. It is published and distributed bi-annually.

+ October 2025 | Vol 30 Issue 2 – LSAH Newsletter

+ Past LSAH Newsletters and Publications

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Last Updated

Nov 25, 2025

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Robert E. Lewis

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Ahmed El-Rasheedy