Sun news: Active sunspot grows more powerful
Sun news October 23, 2026: AR4560 grew a delta, the most complex setup there is! Meanwhile, fast wind and a glancing CME could bring storms October 25. The post Sun news: Active su...
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Olbers’ paradox asks ‘Why is the night sky dark?’
Olbers' paradox asks why is space dark if the universe is filled with stars. The answer has to do with traveling light and red-shifting colors. The post Olbers’ paradox asks ‘Why i...
1st photo of Earth from space, 80 years ago
On October 24, 1946 — 80 years ago — a movie camera on board a V-2 rocket captured the 1st-ever photo of Earth from space. The post 1st photo of Earth from space, 80 years ago firs...
This Week's Sky at a Glance, October 23 – November 1
The Moon lights the way to Saturn 3,300 times farther behind it, then it befriends the Pleiades. The Ghost of Summer Suns arrives for Halloween. The Dipper lies low. The post This...
Earth from Space: The pink city
Image: This image shows a detailed view of the city of Toulouse in southwest France, with its terracotta tiled rooftops lending it the nickname la ville rose, or the pink city.
APOD: 2026 October 23 – Andromeda in Southern Spring
APOD Science APOD APOD: 2026 October 23 –… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss APOD Astronomy Picture of the Day Discover the cosmos!...
El Niño Then and Now
A 35-year satellite altimetry record lets scientists hold this year’s El Niño up against its strongest predecessors.
NASA Invites Media to 2026 von Braun Space Exploration Symposium
Members of the media are invited to join NASA at the 2026 von Braun Space Exploration Symposium from Monday, Oct. 26, to Wednesday, Oct. 28, at the University of Alabama in Huntsvi...
Spiral's Edge
This NASA Hubble Space Telescope image features the edge-on, intermediate spiral galaxy NGC 1827, located roughly 37 million light-years away in the constellation Columba, the Dove...
Spiral’s Edge
This NASA Hubble Space Telescope image released on Oct. 16, 2026, features the edge-on, intermediate spiral galaxy NGC 1827, located roughly 37 million light-years away in the cons...
NASA’s Hubble Charts Path for Roman with Gravitational Lenses
This observation is one of many gravitational lensing images taken by Hubble in preparation for science with the new Nancy Grace Roman Space Telescope.
350th ESA Council: Media information session
Video: 01:45:34 Watch the replay of the media information session where ESA Director General Josef Aschbacher and ESA Council Chair at delegate level Juan Carlos Cortés outline the...
Why does anything exist? New theory emerges
Why does anything exist? A new theory suggests a forgotten particle might have shifted the balance between matter and antimatter. The post Why does anything exist? New theory emerg...
Lucy mission to Trojan asteroids: 5 years of discoveries
NASA’s Lucy mission is now less than a year from reaching the Trojan asteroids near Jupiter. And it has already made some exciting discoveries along the way. The post Lucy mission...
Cassiopeia and Perseus on October evenings
Cassiopeia and Perseus are neighbors in the autumn sky. Use Cassiopeia's distinctive W or M shape to locate the dimmer Perseus on autumn and winter evenings. The post Cassiopeia an...
ESA Open Days 2026
Video: 00:00:49 ESA Open Days 2026 welcomed over 23 000 visitors across its six establishments, giving the public the opportunity to discover more about Europe’s space activities...
ESA Council approves appointment of two new directors
The European Space Agency Council has approved the appointment of two new directors: Andrzej Banasiak as Director of Commercialisation and Industry Partnership, and Nicolaus Hanows...
Visible planets and night sky guide for October
Visible planets and night sky guide. You might still see some Orionid meteors! And find out about the ancient traditions of Halloween in a video, here. The post Visible planets and...
Stars brewing in a nebulous cauldron
Image: Stars brewing in a nebulous cauldron
APOD: 2026 October 22 – The First Green Star, WD J1330+6435
APOD Science APOD APOD: 2026 October 22 – The… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss APOD Astronomy Picture of the Day Discover the cos...
Fires Char New Guinea
Emissions on both sides of the island are unusually high as human-set fires spread in a landscape parched by drought.
Faster to Science: A Letter to the Science Community
NASA Science wants to deliver science faster, so we’re changing how we compete and select missions. On Monday, October 26, we will host a virtual NASA Science Town Hall.
Space in the 2026 elections
A space advocate’s guide to the U.S. midterm elections
NASA Conducts RS-25 Engine Test in Support of Future Artemis Missions
NASA tested RS-25 engine No. 10001 on Oct. 21 on the Fred Haise Test Stand at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. Test teams fired the developmental engine...
NASA JPL Looks to Next 90 Years of Innovation, Exploration
Interstellar probes. Lunar drones. Helicopters on Mars. When a group of Caltech graduate students and enthusiasts began conducting rocket-propulsion tests in Pasadena’s Arroyo Seco...
Momentum October 2026
If ever there were a case for playing the long game, space exploration is it.
How to log in to The Planetary Society Member Community
A guide to accessing the Member Community website and app.
Science on the Space Station with NASA Astronaut Jessica Watkins
NASA astronaut and Expedition 75 flight engineer Jessica Watkins works inside the Kibo laboratory module's Life Science Glovebox, safely mixing living cell samples with a bioink an...
A Chartreuse White Dwarf Shows Some Stars Really Are Green
The stars in our galaxy come in a beautiful assortment of colors. We see supergiants such as Betelgeuse that have a warm red glow, and others like Rigel that shine […] The post A C...
Surprising colors of white dwarf stars revealed for 1st time
Astronomers in the U.K. have found that the true colors of white dwarf stars can vary greatly. They even found the 1st known green star. The post Surprising colors of white dwarf s...
Euclid was mapping the universe. Then it found a comet
The Euclid space telescope made an accidental comet discovery as it searched the universe for evidence of dark matter and dark energy. The post Euclid was mapping the universe. The...
Pegasus is a baseball diamond! Just in time for the World Series
The Great Square of Pegasus is tilted to look like a baseball diamond in October, as if to celebrate baseball's World Series. The post Pegasus is a baseball diamond! Just in time f...
Membership Assistant
As part of our Advancement Services team, the Membership Assistant is often a member's first point of contact with the Society, whether by phone, email, or in person at our beautif...
NASA Provides Progress Update on Moon Base Rovers
As NASA works to build the Moon Base, crewed and robotic lunar rovers will play a crucial role during early development through technology demonstrations, astronaut transport, terr...
Webb Captures Stellar Jets
NASA’s James Webb Space Telescope has revealed many protostars and stars within the glowing gases of NGC 7129. Hot, atomic hydrogen gas is shown here in the golden region, while co...
See brightest star, Sirius, in your morning sky
Out late at night or before dawn? Look for the sky's brightest star, Sirius, a brilliant beauty. You'll know it's Sirius if you see Orion's Belt pointing to it. The post See bright...
MMX lifts off to Mars’s moon Phobos
Image: MMX lifts off to Mars’s moon Phobos
Japan Launches the Martian Moons Exploration Mission
A two-stage, H3-24L rocket lit up the predawn skies over Tanegashima Space Center on the southern tip of Japan early on Tuesday, October 20th (3:41 p.m. EDT on October 19th), […] T...
Martian Dawn
The captivating shapes of wind-carved crags called yardangs are revealed in this zoomed-in crop of a broader panorama captured by NASA’s Curiosity Mars rover. Scientists are eager...
Celebrating BepiColombo, three words at a time
Video: 00:03:32 BepiColombo launched on 20 October 2018. This year, the anniversary is special. After eight years of travelling through the inner Solar System, the ESA/JAXA mission...
Euclid discovers new comet
The European Space Agency’s Euclid space telescope has discovered its first previously unknown comet, in images taken between 16 and 24 September 2026.
Webb and Spitzer Telescopes Explore the Planets That Never Were
Planetesimal wrecks are raging around distant stars. With the Webb and Spitzer Space Telescopes, astronomers are learning what that looks like. The post Webb and Spitzer Telescopes...
Chile’s Light-Pollution Standard Takes Full Effect
The South American country, which hosts some of the world’s major astronomical observatories, promises to protect its night skies, from the Atacama Desert to Tierra del Fuego. The...
Artemis II Heat Shield After Splashdown
Shortly after Artemis II splashdown on April 10, 2026, U.S. Navy divers captured underwater imagery of the Orion spacecraft’s heat shield.
Artemis II Heat Shield After Splashdown
Shortly after NASA’s Artemis II mission splashed down on April 10, 2026, U.S. Navy divers captured underwater imagery of the Orion spacecraft’s heat shield. In the months after, th...
Seeing the old in a new light
Old stars may offer a rainbow of color, while a Mars rover sets a new record, and a JWST image gets an artistic makeover.
I Am Artemis: Allison Mjoen
As the supercooled propellant flowed into the core stage, and NASA’s SLS (Space Launch System) rocket roared to life, Allison Mjoen and her family watched with awe and pride. Mjoen...
This Week's Sky at a Glance, October 16 – 25
Tonight the Moon's in the Teapot. High in early dawn, Mars stands over Jupiter while Regulus twinkles below. The post This Week's Sky at a Glance, October 16 – 25 appeared first on...
A Cloud Forms Spontaneously Over a Mountain on Mars — Here’s Why
This curious cloud requires no solid particles to seed its formation — a theoretical phenomenon that's never been observed until now. The post A Cloud Forms Spontaneously Over a Mo...
NASA Satellites Observe Historic 2026 El Niño
A phenomenon rarer than a solar eclipse and more powerful than any single storm system is unfolding this fall, and NASA is tracking it closely. El Niño is a natural climate pattern...
Rigorous Analysis Confirms NASA’s Artemis II Heat Shield Performance
NASA’s Artemis II mission sent four astronauts around the Moon and brought them safely back to Earth, laying a foundation for crewed flights to the Moon’s surface. Additional engin...
Chandra Finds Possible Origin of 'Treble Clef' Waves
Astronomers have used NASA’s Chandra X-ray Observatory to break down the cause of a remarkable formation of radio waves they have nicknamed the “Treble Clef” because its distinct s...
What star in the northeast flashes colorfully? It’s Capella!
If you're in Earth's Northern Hemisphere and see a bright star twinkling with red, green and blue flashes low in the northeast on October evenings, it's probably Capella. See chart...
Rise Early on October 22nd for the Orionid Meteor Shower
The Moon bugs out just in time to enjoy the peak of the Orionids, which trace their origin to Halley's Comet. The post Rise Early on October 22nd for the Orionid Meteor Shower appe...
NASA’s SpaceX CRS-35 Launch Jellyfish
The exhaust plumes of a SpaceX Falcon 9 rocket carrying the company’s Dragon spacecraft are seen illuminated by sunlight against the predawn sky during the launch of NASA’s SpaceX...
Mars moon mission set to launch with tech funded by Planetary Society on board
The first mission to land on a moon of Mars could launch as soon as Oct. 19, carrying with it a sample collection instrument that The Planetary Society helped develop.
NASA to Discuss Artemis Acceleration, Status of Upcoming Moon Missions
NASA will provide an update on its plans to return American astronauts to the surface of the Moon by 2028 at 2 p.m. EDT, Friday, Oct. 23, at the agency’s Kennedy Space Center in Fl...
Where winds blow and lava flows
Image: Where winds blow and lava flows
Transporter-18 SmallSats Encapsulation
Three NASA-supported small spacecraft, shown along with many commercial payloads, before being encapsulated in a SpaceX Falcon 9. The rocket launched the payloads into low-Earth or...
NASA Initiative to Study the Moon's Environment
NASA announced three new scientific payloads that will head to the Moon to better understand lunar hazards and resources. The post NASA Initiative to Study the Moon's Environment a...
Week in images: 12-16 October 2026
Week in images: 12-16 October 2026 Discover our week through the lens
NASA JPL Testing Readies Voyager Technologies Lander for Moon Mission
A commercial lander that will be at the forefront of NASA’s efforts to establish a Moon Base, humanity’s first lunar outpost, has passed a series of critical tests at the agency’s...
Mars moon lander set to launch on 19 October
The Martian Moons eXploration ( MMX ) mission is set to launch into space on a H3 rocket from the Tanegashima Space Center at 04:41 JST on 20 October 2026 (20:41 BST / 21:41 CEST o...
The Solar System Has a New Life Expectancy, and It’s a Billion Times Shorter
New simulations suggest that the planets' orbits will destabilize well before the Sun expands into its red giant phase. The post The Solar System Has a New Life Expectancy, and It’...
Are We About to Abandon Leap Seconds?
On October 15, 2026, timekeepers voted to allow the difference between civil time (UTC) and solar time (UT1) to increase from 1 second to 1 hour.
ESA astronaut Sophie Adenot returns from her first mission to the International Space Station
ESA astronaut Sophie Adenot has arrived back in Europe, landing in Cologne, Germany, following her return to Earth with Crew-12 after 237 days, nearly eight months, aboard the Inte...
Born from fire
A NASA spacecraft bakes in a furnace, a planet possibly forms from its dying star, and a cloud arises by a Mars volcano.
Cosmic House of Mirrors
This NASA/ESA/CSA James Webb Space Telescope Picture of the Month features galaxies in incredible detail that have been warped and multiplied like they’ve stepped into a house of m...
Mercury after sunset and great for Southern Hemisphere!
Southern Hemisphere, look for Mercury after sunset. It's your best shot at seeing the planet in your evening sky all year. The post Mercury after sunset and great for Southern Hemi...
This Week's Sky at a Glance, October 9 – 18
Take advantage of these moonless evenings! Make friends with some far Cassiopeia clusters in the high-arching Milky Way. Soon the Moon will return. The post This Week's Sky at a Gl...
Crew-12 Returns to Earth
The SpaceX Crew Dragon Freedom spacecraft is seen as it lands with NASA astronauts Jessica Meir and Jack Hathaway, ESA (European Space Agency) astronaut Sophie Adenot, and Roscosmo...
NASA’s SPHEREx Telescope Sees Menagerie of Brown Dwarfs
NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer) space telescope is shedding light on brown dwarfs, celestial objects t...
Solar Orbiter tracks origin of mysterious magnetic switchbacks
The European Space Agency-led Solar Orbiter spacecraft has flown through an S-shaped kink known as a ‘switchback’ in the solar wind’s magnetic field. By fingerprinting the elusive...
Artemis II Crew Moon Photo Annotations
A visualization of a dark Moon eclipsing the Sun is marked with handwritten notes in this April 6, 2026, screenshot from an Artemis II crew member's tablet.
Artemis II Crew Moon Photo Annotations
A visualization of a dark Moon eclipsing the Sun is marked with handwritten notes in this April 6, 2026, screenshot from an Artemis II crew member’s tablet. NASA astronauts Reid Wi...
Mars’s oddest cloud may be even odder than we thought
Scientists using the European Space Agency's Mars Express , in combination with a state-of-the-art meteorological model of the Red Planet, have found that there may be some very ex...
Find the Andromeda Galaxy using Cassiopeia
Leave the city behind this weekend and go galaxy-hunting! Cassiopeia - one of the easiest constellations to identify - points the way to the Andromeda Galaxy. The post Find the And...
Astronomers Solve Cosmic Cold Case with NASA Hubble Data
This artist’s concept depicts a possible explanation for the unusual chemical abundances NASA’s Hubble Space Telescope detected in the HS 0209+0832 system: a second-generation plan...
NASA’s Curiosity Rover Catches Stunning Martian Dawn
A newly released panorama captured by NASA’s Curiosity rover offers the most detailed view yet of distant, wind-carved Martian cliffs, highlighting features the mission’s scientist...
Webb captures commotion from nebula’s stellar jets
Image: Webb captures commotion from nebula’s stellar jets