Hubble Spots a Storm of New Stars

Hubble Spots a Storm of New Stars

2 min read

Hubble Spots a Storm of New Stars

A spiral galaxy, seen partly from the side, with a messy, turbulent appearance. Its disc is made of multiple patchy arms that contain numerous sparkling blue and glowing red regions — star clusters and star-forming nebulae. Thick clumps of dark reddish dust swirl through the disc. The glow of the disc extends out into the dark background, where both distant and nearby stars can be seen.
This NASA/ESA Hubble Space Telescope image features the spiral galaxy named NGC 1792.
ESA/Hubble & NASA, D. Thilker, F. Belfiore, J. Lee and the PHANGS-HST Team

This NASA/ESA Hubble Space Telescope image features a stormy and highly active spiral galaxy named NGC 1792. Located over 50 million light-years from Earth in the constellation Columba (the Dove), the bright glow of the galaxy’s center is offset by the flocculent and sparkling spiral arms swirling around it.

NGC 1792 is just as fascinating to astronomers as its chaotic look might imply. Classified as a starburst galaxy, it is a powerhouse of star formation, with spiral arms rich in star-forming regions. In fact, it is surprisingly luminous for its mass. The galaxy is close to a larger neighbor, NGC 1808, and astronomers think the strong gravitational interaction between the two stirred up the reserves of gas in this galaxy. The result is a torrent of star formation, concentrated on the side closest to its neighbor, where gravity has a stronger effect. NGC 1792 is a perfect target for astronomers seeking to understand the complex interactions between gas, star clusters, and supernovae in galaxies.

Hubble studied this galaxy before. This new image includes additional data collected throughout 2025, providing a deeper view of the tumultuous activity taking place in the galaxy. Blossoming red lights in the galaxy’s arms mark Hydrogen-alpha (H-alpha) emission from dense clouds of hydrogen molecules. The newly forming stars within these clouds shine powerfully with ultraviolet radiation. This intense radiation ionizes the hydrogen gas, stripping away electrons which causes the gas to emit H-alpha light. H-alpha is a very particular red wavelength of light and a tell-tale sign of new stars.

Media Contact:

Claire Andreoli (claire.andreoli@nasa.gov)
NASA’s Goddard Space Flight CenterGreenbelt, MD

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Senyar Swamps Sumatra

Senyar Swamps Sumatra

A satellite image centered on the town of Lhoksukon in Sumatra shows brown, muddy floodwater covering much of a coastal plain near the town. Plumes of brown water are visible mixing with the bluer waters of the Strait of Malacca in the upper part of the image. The lower part of the image is greener, more mountainous, and speckled with small clouds.
November 30, 2025

Tropical cyclones almost never form over the Strait of Malacca. The narrow waterway separating Peninsular Malaysia from the Indonesian island of Sumatra sits so close to the equator that the Coriolis effect is usually too weak to allow storms to rotate enough to organize into cyclones. But on November 25, 2025, meteorologists watched as a tropical depression intensified into Cyclone Senyar—just the second documented case of a tropical cyclone forming in the strait.

Hemmed in by land on both sides, Senyar made landfall in Sumatra later that day as it made a U-turn and headed east toward Malaysia. As the slow-moving storm passed over Sumatra’s mountainous terrain, it dropped nearly 400 millimeters (16 inches) of rain in many areas, according to satellite-based estimates from NASA’s Global Precipitation Measurement (GPM) mission. (Due to the averaging of the satellite data, local rainfall amounts may differ when measured from the ground.)

The torrent caused extensive flash floods and landslides in Sumatra’s rugged terrain. Streams and rivers rapidly overflowed with sediment-laden, debris-filled waters that swept through villages, cities, and towns. News reports suggest that the damage was worsened by an earthquake that struck on November 27 and the abundance of loose piles of timber in the region that became destructive battering rams in high water. As of December 4, Indonesian authorities reported several hundred deaths and more than 700,000 displaced people.

The OLI-2 (Operational Land Imager-2) on Landsat 9 captured this image of flooding in Aceh and North Sumatra provinces on November 30, 2025. Muddy sediment-filled water appears to have swamped much of Lhoksukon, a town of 40,000 people, and several surrounding villages. 

Other tropical cyclones and monsoon rains hitting Sri Lanka, Thailand, Malaysia, and Vietnam at roughly the same time have also caused extensive destruction in the broader region. According to one estimate from the United Nations Office for the Coordination of Humanitarian Affairs, flooding has affected more than 10.8 million people in the region and displaced more than 1.2 million.

NASA Earth Observatory image by Lauren Dauphin, using Landsat data from the U.S. Geological Survey. Story by Adam Voiland.

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NASA Selects 2 Instruments for Artemis IV Lunar Surface Science

NASA Selects 2 Instruments for Artemis IV Lunar Surface Science

4 min read

NASA Selects 2 Instruments for Artemis IV Lunar Surface Science

NASA has selected two science instruments designed for astronauts to deploy on the surface of the Moon during the Artemis IV mission to the lunar south polar region. The instruments will improve our knowledge of the lunar environment to support NASA’s further exploration of the Moon and beyond to Mars. 

A visualization of the Moon’s South Pole region created with data from NASA’s Lunar Reconnaissance Orbiter, which has been surveying the Moon with seven instruments since 2009. 
NASA’s Scientific Visualization Studio/Ernie Wright

“The Apollo Era taught us that the further humanity is from Earth, the more dependent we are on science to protect and sustain human life on other planets,” said Nicky Fox, associate administrator, Science Mission Directorate at NASA Headquarters in Washington. “By deploying these two science instruments on the lunar surface, our proving ground, NASA is leading the world in the creation of humanity’s interplanetary survival guide to ensure the health and safety of our spacecraft and human explorers as we begin our epic journey back to the Moon and onward to Mars.”

After his voyage to the Moon’s surface during Apollo 17, astronaut Gene Cernan acknowledged the challenge that lunar dust presents to long-term lunar exploration. Moon dust sticks to everything it touches and is very abrasive. The knowledge gained from the DUSTER (DUst and plaSma environmenT survEyoR) investigation will help mitigate hazards to human health and exploration. Consisting of a set of instruments mounted on a small autonomous rover, DUSTER will characterize dust and plasma around the landing site. These measurements will advance understanding of the Moon’s natural dust and plasma environment and how that environment responds to the human presence, including any disturbance during crew exploration activities and lander liftoff. The DUSTER instrument suite is led by Xu Wang of the University of Colorado Boulder. The contract is for $24.8 million over a period of three years. 

A model of the DUSTER instrument suite
A model of the DUSTER instrument suite consisting of the Electrostatic Dust Analyzer (EDA)—which will measure the charge, velocity, size, and flux of dust particles lofted from the lunar surface—and Relaxation SOunder and differentiaL VoltagE (RESOLVE)—which will characterize the average electron density above the lunar surface using plasma sounding. Both instruments will be housed on a Mobile Autonomous Prospecting Platform (MAPP) rover, which will be supplied by Lunar Outpost, a company based in Golden, Colorado, that develops and operates robotic systems for space exploration.
LASP/CU Boulder/Lunar Outpost

Data from the SPSS (South Pole Seismic Station) will enable scientists to characterize the lunar interior structure to better understand the geologic processes that affect planetary bodies. The seismometer will help determine the current rate at which the Moon is struck by meteorite impacts, monitor the real-time seismic environment and how it can affect operations for astronauts, and determine properties of the Moon’s deep interior. The crew will additionally perform an active-source experiment using a “thumper” that creates seismic energy to survey the shallow structure around the landing site. The SPSS instrument is led by Mark Panning of NASA’s Jet Propulsion Laboratory in Southern California. The award is for $25 million over a period of three years. 

An artist’s concept of SPSS (South Pole Seismic Station)
An artist’s concept of SPSS (South Pole Seismic Station) to be deployed by astronauts on the lunar surface.
NASA/JPL-Caltech

“These two scientific investigations will be emplaced by human explorers on the Moon to achieve science goals that have been identified as strategically important by both NASA and the larger scientific community”, said Joel Kearns, deputy associate administrator for exploration, Science Mission Directorate at NASA Headquarters. “We are excited to integrate these instrument teams into the Artemis IV Science Team.”

The two payloads were selected for further development to fly on Artemis IV; however, final manifesting decisions about the mission will be determined at a later date. 

Through Artemis, NASA will address high priority science questions, focusing on those that are best accomplished by on-site human explorers on and around the Moon and by using the unique attributes of the lunar environment, aided by robotic surface and orbiting systems. The Artemis missions will send astronauts to explore the Moon for scientific discovery, economic benefits, and build the foundation for the first crewed missions to Mars.

For more information on Artemis, visit:

https://www.nasa.gov/humans-in-space/artemis

Karen Fox / Molly Wasser
Headquarters, Washington
202-358-1600 
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov

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Station Trio Nears Departure During Busy Day of Blood Research

Station Trio Nears Departure During Busy Day of Blood Research

The seven-member Expedition 73 crew gathers together for a portrait inside the International Space Station's Kibo laboratory module celebrating NASA astronaut Mike Fincke's (center) 500 cumulative days in space over four missions since 2004. In the front from left are, Roscosmos cosmonaut Sergey Ryzhikov, NASA astronaut Zena Cardman, Mike Fincke, and NASA astronaut Jonny Kim. In the back are, JAXA (Japan Aerospace Exploration Agency) astronaut Kimiya Yui and Roscosmos cosmonauts Oleg Platonov and Alexey Zubritsky.
The seven-member Expedition 73 crew gathers together for a portrait on Nov. 27, 2025, celebrating NASA astronaut Mike Fincke’s (center) 500 cumulative days in space over four missions since 2004. In the front from left are, Roscosmos cosmonaut Sergey Ryzhikov, NASA astronaut Zena Cardman, Mike Fincke, and NASA astronaut Jonny Kim. In the back are, JAXA (Japan Aerospace Exploration Agency) astronaut Kimiya Yui and Roscosmos cosmonauts Oleg Platonov and Alexey Zubritsky.
NASA

Three Expedition 73 crewmates will end their stay aboard the International Space Station when they undock Dec. 8 and return to Earth a few hours later. In the meantime, blood research took precedence on Thursday ensuring astronauts stay healthy while living long-term in weightlessness.

NASA astronaut Jonny Kim and Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritsky are poised to complete a 245-day space research mission when they undock at 8:41 p.m. EDT on Monday, Dec. 8, from the Prichal module inside the Soyuz MS-27 crew spacecraft. The trio will parachute back to Earth inside the Soyuz descent module for a landing in Kazakhstan at 12:04 a.m. on Tuesday, less than three-and-a-half hours later. NASA’s live coverage of the crew’s return  will be broadcast on NASA+Amazon Prime, and the agency’s YouTube channel.

The homebound threesome reviewed and practiced the operations they will perform inside the Soyuz once they begin to feel the pull of Earth’s gravity as they reenter the atmosphere. Ryzhikov and Zubritsky also tested a unique suit that reverses space-caused fluid shifts toward the upper body by pulling blood toward the feet. Results may prevent head and eye pressure in space and ease the adjustment to gravity after a multi-month-long spaceflight.

NASA Flight Engineers Zena Cardman and Chris Williams scanned their veins with the Ultrasound 2 device and measured each other’s blood pressure providing doctors insight into an astronaut’s cardiovascular system. The duo conducted the cardiac portion of the long-running CIPHER human research investigation inside the Columbus laboratory module that is tracking astronaut health before, during, and after a mission.

Flight Engineers Mike Fincke of NASA and Kimiya Yui of JAXA (Japan Aerospace Exploration Agency) took turns bringing Williams up-to-speed with life on orbit. The veteran astronauts familiarized Williams with station hardware, operations, and systems. Williams has been on the orbital outpost since Nov. 27 when he and Roscosmos Flight Engineers Sergey Kud-Sverchkov and Sergei Mikaev arrived on the Soyuz MS-28 crew spacecraft.

Kud-Sverchkov and Mikaev examined how microgravity affects blood flow in a cosmonaut’s fingers and toes. A variety of advanced medical gear observed the behavior of their microcirculatory system as they wore a set of electrodes and cuffs on their head, hands, and feet.

Roscosmos Flight Engineer Oleg Platonov spent the first part of his shift documenting the location and amount of clothing and towels available in the Roscosmos segment of the station. After lunchtime, Platonov spent the rest his shift on life support maintenance duties.

Learn more about station activities by following the space station blog, @space_station on X, as well as the ISS Facebook and ISS Instagram accounts.

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Mark A. Garcia

NASA’s Nancy Grace Roman Space Telescope Completed

NASA’s Nancy Grace Roman Space Telescope Completed

Two people in white jumpsuits look up at a large telescope with three black and orange panels facing them. They are in a large white cleanroom with equipment and scaffolding.
Over the course of several hours, technicians meticulously connected the inner and outer segments of NASA’s Nancy Grace Roman Space Telescope.
NASA/Jolearra Tshiteya

Two technicians look up at NASA’s Nancy Grace Roman Space Telescope after its inner and outer segments were connected at the agency’s Goddard Space Flight Center in Greenbelt, Maryland on Nov. 25, 2025. This marked the end of Roman’s construction. After final testing, the telescope will move to the launch site at NASA’s Kennedy Space Center in Florida for launch preparations in summer 2026. Roman  — named after Dr. Nancy Grace Roman, NASA’s first chief astronomer — is slated to launch by May 2027, but the team is on track for launch as early as fall 2026.

See more photos of the completed observatory.

Image credit: NASA/Jolearra Tshiteya

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Monika Luabeya