Mapping the Northern Sky(maps.com)
32 points by tmseidman | 10 comments
Maps.com article featuring Florian Winkler's star map of the stars, Messier objects, and constellations of the Northern Hemisphere sky.
Space on Hacker News
151 stories, newest first.
ESA's Hera Will View Asteroid Scars from DART's Strike(spectrum.ieee.org)
62 points by rbanffy | 7 comments
IEEE Spectrum news article on ESA's Hera spacecraft preparing to image asteroid Dimorphos after NASA's DART planetary defense impact.
JAXA is about to perform a Phobos sample return mission(science.org)
97 points by Muhammad523 | 19 comments
Science news feature on Japan's MMX mission, which aims to return samples from Mars's moon Phobos to learn how it formed and possibly retrieve pieces of Mars.
Triplet of 'ghostly' galaxies hints at what dark matter is and isn't(quantamagazine.org)
83 points by gumby | 52 comments
Quanta Magazine article on a triplet of galaxies apparently lacking dark matter, possibly from a collision, and what it implies for alternative gravity theories.
Worlds more habitable than Earth?(nytimes.com)
76 points by cainxinth | 150 comments
New York Times science article about planets that might be more habitable than Earth; the capture shows a bot-block page instead of the article.
I think I found a planet nobody knew existed. I used Claude Code to find it(reddit.com)
231 points by pyduan | 113 comments
Reddit post in r/ClaudeAI where a user claims to have found a previously unknown planet using Claude Code; the page shown is a Reddit network-security block.
Margaret Hamilton has died(news.mit.edu)
2038 points by muglug | 236 comments
MIT News obituary reporting the death at 90 of Margaret Hamilton, the computing pioneer who led software development for the Apollo program.
I asked Claude build a physically accurate O'Neill cylinder you can walk around(island-three.gruberbuilds.workers.dev)
23 points by bilsbie | 20 comments
A browser-based interactive 3D simulation of an O'Neill cylinder space habitat that users can walk around, reportedly built with Claude.
Show HN: AstroHelm – Use your phone camera to aim a telescope or telephoto lens(astrohelm.app)
79 points by HeavenFox | 26 comments
Landing page for AstroHelm, a mobile app that plate-solves the sky through a phone camera mounted on a telescope or camera to guide users to celestial objects.
Our Solar System Is Terminally Unstable(404media.co)
6 points by saikatsg | 1 comments
A 404 Media article on a study finding the solar system is dynamically unstable over long timescales and will eventually be destroyed.
Where Is the Planet(whereistheplanet.com)
26 points by andsoitis | 3 comments
A web tool that predicts the sky locations of directly-imaged exoplanets and brown dwarf companions, built by Jason Wang, Matas Kulikauskas, and Sarah Blunt.
STS-51-F Abort-to-Orbit (1985)(en.wikipedia.org)
32 points by schoen | 10 comments
Wikipedia article on STS-51-F (Spacelab 2), the 1985 Space Shuttle Challenger mission that performed an abort-to-orbit after an engine failure during ascent.
Our Project Suncatcher prototype satellite is in orbit(blog.google)
58 points by pantalaimon | 56 comments
Google blog post announcing that its Project Suncatcher prototype satellite, built with Planet, launched on SpaceX Transporter-18 to test TPUs in orbit.
A 12-year sequence of telescope images of a star and four planets orbiting(bsky.app)
387 points by mariuz | 79 comments
Bluesky post by Paul Byrne sharing a 12-year sequence of telescope images showing four massive exoplanets orbiting a star 133 light-years away.
Martian chaos terrain(en.wikipedia.org)
95 points by tiagod | 25 comments
Wikipedia article on Martian chaos terrain, regions of jumbled blocks, mesas and valleys on Mars thought to be linked to ancient water outflow.
The top secret URSALA, RAQUEL, and FARRAH satellites (2025)(thespacereview.com)
287 points by Bluestein | 149 comments
The Space Review essay on the history of the top secret URSALA, RAQUEL, and FARRAH reconnaissance satellite programs.
Show HN: Real-time Solar System with 526k asteroids and all tracked satellites(space.bl2.net)
362 points by wanick | 99 comments
Interactive real-time 3D visualization of Earth's tracked satellites, the planets and moons, and over 527,000 asteroids and comets, using CelesTrak catalog data.
What a Massive New 728-Foot-Wide Crater Means for Future Moon Bases(nytimes.com)
25 points by bookofjoe | 39 comments
New York Times article on a newly formed 728-foot-wide lunar crater and its implications for the safety and planning of future moon bases.
SpaceX's Starship launching to orbit for first time ever today(space.com)
220 points by geox | 155 comments
Space.com article with an embedded live stream of SpaceX's Starship megarocket launching to orbit for the first time, scheduled for Sept. 28 at 8:15 a.m. EDT.
The Mars Delusion(noemamag.com)
8 points by Tomte | 4 comments
Noema Magazine essay arguing that establishing a human colony on Mars is fraught with risk and questioning why so many people are obsessed with it.
New Satellite Engine Could Use Earth's Atmosphere to Stay in Orbit Indefinitely(scitechdaily.com)
45 points by GordonS | 9 comments
SciTechDaily article on a new satellite engine concept that would use atmospheric gases as propellant, letting satellites in very low orbit stay up indefinitely.
The far side of the Moon provides clues to a previous magnetic field(ethz.ch)
17 points by croes | 1 comments
ETH Zurich news article on research using the Moon's far side to show the Moon once had an internal magnetic field generated by a dynamo like Earth's.
Promising discoveries about the potential for life on one of Saturn’s icy moons(fu-berlin.de)
87 points by geox | 49 comments
Freie Universität Berlin press release on two Science Advances studies suggesting Saturn's moon Enceladus may be more habitable and that life could be detectable by planned spacecraft.
Astronomer watches Starlink satellites sinking to build a 'planetary barometer'(theregister.com)
44 points by whh | 16 comments
The Register article on astronomer Tony Phillips of spaceweather.com using Starlink satellites' orbital decay to measure atmospheric expansion as a 'planetary barometer'.
Google's first Suncatcher orbital data center test launches October 1(arstechnica.com)
41 points by sbulaev | 41 comments
Ars Technica article reporting that Google's first Suncatcher orbital data center test, carrying four TPUs and running 15 minutes at a time, launches October 1.
![Screenshot of osti.gov: Calculating atmospheric drag on satellites for a Cubesat [pdf]](https://hn.urlbox.com/shots/renders/2026/9/26/ff5790bb-cd43-4c52-92ef-171b8d418a69.jpg)
Calculating atmospheric drag on satellites for a Cubesat [pdf](osti.gov)
31 points by walrus01 | 7 comments
A 2010 Lawrence Livermore National Laboratory technical report (LLNL-TR-453771) by W. de Vries on calculating atmospheric drag for Cubesat satellites.
We've Turned Starlink into a Planetary Barometer(spaceweather.com)
8 points by NKosmatos | 2 comments
A Spaceweather.com explainer on using orbital drag data from Starlink satellites to measure changes in upper-atmosphere density, effectively a planetary barometer.
UK military jamming other nations' satellites to defend itself, BBC told(bbc.com)
136 points by thm | 177 comments
BBC News article reporting that the UK military, via UK Space Command, jams other nations' satellites as a defensive measure.
NASA’s Mars Sample Return mission is dead(science.org)
433 points by Muhammad523 | 349 comments
Science magazine news article reporting that NASA's Mars Sample Return mission has been cancelled; the capture shows only a Cloudflare verification page.
US confirms for first time it has deployed space weapons(bbc.com)
443 points by harporoeder | 314 comments
BBC News article reporting that the US has confirmed for the first time that it has deployed weapons in space.
Isar Aerospace reaches orbit and deploys payloads on second flight(isaraerospace.com)
564 points by mpweiher | 180 comments
Isar Aerospace press release announcing its Spectrum rocket reached orbit and deployed payloads on its second flight, a milestone for European spaceflight.
Private German rocket makes history, reaches orbit from European soil(space.com)
672 points by bookmtn | 362 comments
Space.com news article reporting that Isar Aerospace's Spectrum rocket reached orbit on its second launch from Norway's Andøya Spaceport, a first for European soil.
2026 Eclipse Webcams(jonty.github.io)
502 points by zoenolan | 135 comments
An interactive Leaflet map plotting public webcams along the path of totality of the August 2026 solar eclipse across Iceland and Spain, with a countdown timer.
NASA figured out how to keep its Voyager 2 probe running for another year(space.com)
327 points by wglb | 72 comments
Space.com news article on how NASA made power changes so Voyager 2 can keep one of its last instruments running for another year.
Stowaway – Take the window seat on any plane or satellite overhead(stowaway.live)
417 points by thunderbong | 50 comments
Stowaway is a web app that lets users view the simulated window-seat perspective from any plane or satellite currently overhead.
Show HN: Physically accurate black hole you can put in your room(blackhole.plav.in)
449 points by aplavin | 161 comments
Interactive browser app rendering a physically accurate black hole with relativistic ray bending and Doppler boosting, viewable on screen, in AR/VR, or lensing your camera feed.
India's first privately-developed rocket reaches orbit on debut launch(arstechnica.com)
662 points by sohkamyung | 198 comments
Ars Technica article reporting that India's first privately developed rocket reached orbit on its debut launch.
First atmosphere found on Earth-like planet in habitable zone of distant star(bbc.com)
506 points by neversaydie | 292 comments
BBC News article by Pallab Ghosh reporting the first detection of an atmosphere on an Earth-like planet in the habitable zone of a distant star.
Rocketlab acquires Iridium(investors.rocketlabcorp.com)
456 points by everfrustrated | 296 comments
Rocket Lab investor relations press release announcing its deal to acquire satellite communications company Iridium.
Astronauts told to return to ISS after sheltering over air leak repairs(bbc.com)
415 points by janpot | 256 comments
BBC News live coverage of astronauts being told to return to the International Space Station after sheltering during air leak repairs.
Tracing a powerful GNSS interference source over Europe(arxiv.org)
405 points by mimorigasaka | 211 comments
arXiv paper analyzing and identifying a space-based GNSS interference source causing wide-area interference events over Europe, Greenland, and Canada since 2019.
Blue Origin's New Glenn blows up during static fire test(twitter.com)
453 points by enraged_camel | 489 comments
An X post from NASASpaceflight reporting, with video, that Blue Origin's New Glenn rocket exploded at LC-36 during a static fire test ahead of NG-4.
SpaceX launches Starship v3 rocket(space.com)
390 points by busymom0 | 255 comments
News coverage of SpaceX launching the first test flight of its third-generation Starship v3 megarocket, with an NBC News video of the launch.
Project Hail Mary – Stellar Navigation Chart(valhovey.github.io)
1146 points by speleo | 230 comments
An interactive 3D stellar navigation chart built from Gaia DR3 data, showing nearby stars and the Earth-to-Tau Ceti trajectory from Project Hail Mary.
SpaceX S-1(sec.gov)
360 points by cachecow | 279 comments
SpaceX's Form S-1 registration statement filed with the U.S. SEC on May 20, 2026, for its initial public offering.
Artemis II Photo Timeline(artemistimeline.com)
353 points by geerlingguy | 26 comments
An interactive timeline of photos and videos from NASA's Artemis II crewed lunar flyby mission, March–April 2026, filterable by camera and crew-taken shots.
All 12 moonwalkers had "lunar hay fever" from dust smelling like gunpowder (2018)(esa.int)
429 points by cybermango | 243 comments
ESA article on the toxicity of lunar dust, which caused Apollo moonwalkers 'lunar hay fever' symptoms and smelled like spent gunpowder.
Artemis II safely splashes down(cbsnews.com)
1235 points by areoform | 402 comments
CBS News live updates on NASA's Artemis II crew splashing down in the Pacific off San Diego after their crewed moon mission.
How NASA built Artemis II’s fault-tolerant computer(cacm.acm.org)
571 points by speckx | 215 comments
Communications of the ACM news article on how NASA engineered a fail-silent, fault-tolerant computer architecture for the Artemis II crewed Moon mission.
Lunar Flyby(nasa.gov)
910 points by kipi | 222 comments
NASA image gallery titled Lunar Flyby showing photos of the Moon's surface, Earthrise, and an eclipsed Moon from a lunar flyby.
![Screenshot of bbc.com: Artemis II crew see first glimpse of far side of Moon [video]](https://hn.urlbox.com/shots/renders/2026/4/5/ccda23da-ef7a-49f7-b0f8-f4fd2c5d8f62.jpg)
Artemis II crew see first glimpse of far side of Moon [video](bbc.com)
491 points by mooreds | 375 comments
BBC News video showing the Artemis II crew getting their first view of the far side of the Moon.
Artemis II crew take “spectacular” image of Earth(bbc.com)
1016 points by andsoitis | 352 comments
BBC News article about the Artemis II crew capturing a striking photograph of Earth during their mission.
Artemis computer running two instances of MS outlook; they can't figure out why(bsky.app)
425 points by mooreds | 315 comments
A Bluesky post claiming astronauts called Houston because a spaceship computer was running two instances of Microsoft Outlook and NASA planned to remote in.
SpaceX files to go public(nytimes.com)
322 points by nutjob2 | 442 comments
New York Times article reporting that SpaceX has filed to go public; the page loaded as a captcha human-verification challenge.
Artemis II Launch Day Updates(nasa.gov)
1046 points by apitman | 905 comments
NASA live blog providing launch day updates for the crewed Artemis II mission around the Moon, with a live stream of the four-astronaut crew.
Artemis II is not safe to fly(idlewords.com)
755 points by idlewords | 481 comments
Idle Words essay by Maciej Cegłowski arguing that NASA's Artemis II crewed lunar mission is unsafe due to unresolved Orion heat shield problems.
Voyager 1 runs on 69 KB of memory and an 8-track tape recorder(techfixated.com)
656 points by speckx | 241 comments
Tech Fixated article about Voyager 1, launched in 1977, still operating with 69 KB of memory and an 8-track tape recorder for data storage.
My astrophotography in the movie Project Hail Mary(rpastro.square.site)
859 points by wallflower | 197 comments
An astrophotographer's blog post about how his astrophotography images were used in the movie Project Hail Mary.
Data centers in space makes no sense(civai.org)
1035 points by ajyoon | 1222 comments
A CivAI blog post by Andrew Yoon arguing that proposals by SpaceX/xAI, Google and startups to put AI data centers in orbit make no sense.
xAI joins SpaceX(spacex.com)
847 points by g-mork | 1875 comments
SpaceX updates page announcing that xAI is joining SpaceX, shown with an email signup form for SpaceX updates.
Europe’s next-generation weather satellite sends back first images(esa.int)
639 points by saubeidl | 91 comments
ESA article announcing the first images returned by Europe's next-generation Meteosat Third Generation weather satellite.
![Screenshot of youtube.com: The engineer who invented the Mars rover suspension in his garage [video]](https://hn.urlbox.com/shots/renders/2026/1/30/6607b2df-fc14-4649-8ed3-7c37b29c3882.jpg)
The engineer who invented the Mars rover suspension in his garage [video](youtube.com)
369 points by UltraSane | 54 comments
A 1 hour 40 minute YouTube video from GearSkeptic about the engineer who invented the Mars rover suspension in his garage.
Level S4 solar radiation event(swpc.noaa.gov)
594 points by WorldPeas | 197 comments
NOAA Space Weather Prediction Center news alert that G4 (severe) geomagnetic storm levels were reached on 19 January 2026, with aurora forecast and guidance.
Datacenters in space aren't going to work(taranis.ie)
434 points by mindracer | 367 comments
Blog post arguing that AI companies' plans to build datacenters in space with satellite launch partners are impractical and won't work.
Voyager 1 is about to reach one light-day from Earth(scienceclock.com)
1020 points by ashishgupta2209 | 353 comments
Article link about Voyager 1 nearing a distance of one light-day from Earth; the page returned a 503 Service Unavailable error.
Astrophotographer snaps skydiver falling in front of the sun(iflscience.com)
443 points by doener | 86 comments
IFLScience article about an astrophotographer's image capturing a skydiver silhouetted against the sun, titled 'The Fall of Icarus'.
Blue Origin lands New Glenn rocket booster on second try(techcrunch.com)
403 points by perihelions | 234 comments
TechCrunch article reporting that Blue Origin landed its New Glenn booster for the first time on its second flight while launching a NASA spacecraft.
X5.1 solar flare, G4 geomagnetic storm watch(spaceweatherlive.com)
383 points by sva_ | 109 comments
SpaceWeatherLive news post from 11 November 2025 reporting an X5.1 solar flare and a G4 geomagnetic storm watch.
Greenland’s national telco, Tusass, signs new agreement with Eutelsat(dagens.com)
370 points by saubeidl | 202 comments
Dagens.com news article reporting that Greenland's national telco Tusass chose French operator Eutelsat over Starlink for satellite connectivity.
NASA chief suggests SpaceX may be booted from moon mission(cnn.com)
385 points by voxleone | 1020 comments
CNN article reporting that NASA's acting chief Sean Duffy suggested SpaceX could lose its moon lander contract, saying NASA won't wait for one company.
Space Elevator(neal.fun)
1665 points by kaonwarb | 379 comments
Neal.fun interactive page where users scroll upward in an elevator through the atmosphere into space, seeing objects and phenomena at each altitude.
Airliner hit by possible space debris(avbrief.com)
372 points by d_silin | 196 comments
AvBrief news article reporting a United Boeing 737 MAX whose windshield was cracked by a falling object, possibly space debris, at 36,000 feet.
Jim Lovell, Apollo 13 commander, has died(nasa.gov)
549 points by LorenDB | 109 comments
NASA news release in which the acting NASA Administrator reflects on the legacy of Apollo 13 commander Jim Lovell following his death.
Project Hyperion: Interstellar ship design competition(projecthyperion.org)
337 points by codeulike | 277 comments
Project Hyperion website presenting the results of a design competition for crewed interstellar generation ships.
4k NASA employees opt to leave agency through deferred resignation program(kcrw.com)
415 points by ProAm | 521 comments
NPR article republished by KCRW reporting that nearly 4,000 NASA employees chose to leave the agency through a deferred resignation program.
Proposed NOAA Budget Kills Program Designed to Prevent Satellite Collisions(skyandtelescope.org)
336 points by bikenaga | 197 comments
Sky & Telescope news article on how the proposed NOAA budget would eliminate TraCSS, the Traffic Coordination System for Space meant to prevent satellite collisions.
JWST reveals its first direct image discovery of an exoplanet(smithsonianmag.com)
319 points by divbzero | 138 comments
Smithsonian magazine article on the James Webb Space Telescope's first exoplanet discovery via direct imaging, made by blocking the host star's glare.
Vera C. Rubin Observatory first images(rubinobservatory.org)
551 points by phsilva | 152 comments
Vera C. Rubin Observatory's First Look page presenting an interactive zoomable image called "The Cosmic Treasure Chest" from its first observations.
Honda conducts successful launch and landing of experimental reusable rocket(global.honda)
1217 points by LorenDB | 384 comments
Honda press release announcing a successful launch and landing test of its experimental 6.3 m reusable rocket, which reached an altitude of 300 meters.
If the moon were only 1 pixel: A tediously accurate solar system model (2014)(joshworth.com)
854 points by sdoering | 248 comments
An interactive horizontally scrolling scale model of the solar system where the Moon is one pixel wide, by Josh Worth.
Research suggests Big Bang may have taken place inside a black hole(port.ac.uk)
705 points by zaik | 563 comments
University of Portsmouth blog post in which Professor Enrique Gaztanaga proposes a theory that the Big Bang may have occurred inside a black hole.
Old Soviet Venus descent craft nearing Earth reentry(leonarddavid.com)
390 points by Wingman4l7 | 245 comments
Leonard David blog post on the Soviet Cosmos 482 Venus descent craft nearing Earth reentry and what new tracking imagery suggests about it.
“Most promising signs yet” of alien life on a planet beyond our Solar System(skyatnightmagazine.com)
338 points by fuidani | 265 comments
BBC Sky at Night Magazine news article on astronomers detecting possible biosignature dimethyl sulfide on exoplanet K2-18b, called the most promising signs yet of alien life.
How many supernova explode every year?(badastronomy.beehiiv.com)
348 points by rbanffy | 170 comments
Issue #447 of Phil Plait's Bad Astronomy Newsletter estimating how many supernovae explode in the universe every year.
James Webb Space Telescope reveals that most galaxies rotate clockwise(smithsonianmag.com)
333 points by instagraham | 276 comments
Smithsonian Magazine Smart News article on a JWST-based study finding most distant galaxies rotate clockwise, with possible explanations including a black-hole universe.
Botswana launches first satellite BOTSAT-1 aboard SpaceX Falcon 9(spaceinafrica.com)
376 points by vinnyglennon | 204 comments
Space in Africa news article reporting Botswana's successful launch of its first satellite, BOTSAT-1, on March 15, 2025.
Crew-9 Returns to Earth(spacex.com)
405 points by saikatsg | 534 comments
SpaceX mission page with video of the Crew-9 Dragon capsule's parachute splashdown return to Earth from the International Space Station.
Firefly ‘Blue Ghost’ lunar lander touches down on the moon(cnn.com)
722 points by complexpass | 180 comments
CNN live updates page covering Firefly Aerospace's Blue Ghost robotic lunar lander successfully touching down on the moon on March 2, 2025.
Asteroid Impact on Earth 2032 with Probability 1% and 8Mt Energy(cneos.jpl.nasa.gov)
463 points by 2-3-7-43-1807 | 321 comments
NASA JPL CNEOS Sentry page giving Earth impact risk details for near-Earth asteroid 2024 YR4, including Torino and Palermo scale values and impact probability.
IAC confirms existence of a Super-earth in the habitable zone of a Sun-like Star(iac.es)
407 points by ohjeez | 265 comments
Press release from the Instituto de Astrofísica de Canarias announcing confirmation of a super-Earth orbiting in the habitable zone of a Sun-like star.