There have been many substorms over the past nights as well. In fact, we may have experienced a "sawtooth event" last night which can happen under steady Bz south conditions. Learn more about this special magnetospheric mode: go.theauroraguy.com/october2024s...

A #solarstorm, likely a CME flank hit, is causing geomagnetic disturbances (current Dst = -118 nT). Bz dropped to -17 nT but has since turned northward ➡️ probably no aurora in Europe tonight. Hoping high-latitude regions still in darkness get a good show! 💫🌌

An M2.6 solar flare along with a prominence eruption off the southwest limb on Tuesday morning. Image by GOES-19 SUVI. SolarHam.com

All is going well! 👍 🚀 ❗ First and second stage separation successful and reentry of the stage 1 with burn. Wow! 😱

A large prominence is currently liftoff near the northeast limb. Image by GOES-19 SUVI. SolarHam.com

Asteroid 2025 FA22 will safely pass Earth on 18 September 2025 at 07:41 UTC (09:41 CEST). It is between 130 and 290 m across and at its closest point to our planet, it will be just over twice as far away as the Moon. www.esa.int/ESA_Multimed...

Experiments on Earth indicate some common species of bacteria and fungi could survive for several days on the moon's surface, suggesting missions must take stronger precautions to avoid contamination

The Cassini Saturn mission ended with its "Grand Finale" #OTD in 2017. To avoid the possibility of colliding with and possibly contaminating one of Saturn’s moons, the probe incinerated itself by plunging into the planet's atmosphere. 🧪 🔭 Video: Artist's conception, from a NASA/JPL-Caltech video

"Ride 'em cowboy," said Gemini XI command pilot Pete Conrad as pilot Dick Gordon attaches a tether from the Agena target vehicle to his spacecraft. This view was taken on September 13, 1966, over the Atlantic Ocean at approximately 160 miles above Earth. contactlight.de

🔭 The Umbra of Earth Image Credit & Copyright: Wang Letian (Eyes at Night) apod.nasa.gov/apod/ap25091...

An important part of this story (which I am not expecting the NASA live stream to mention) is that the sample return mission that could potentially answer the question of life on Mars is being threatened by budget cuts from the Trump administration www.newscientist.com/article/2495...

This story began with a JPL press release in July 2024, soon after the #Mars rock was discovered. www.jpl.nasa.gov/news/nasas-p... Today is the publication of the peer-reviewed paper describing what's in it. That @nature.com paper is here www.nature.com/articles/s41... 🧪

#OTD in 1977, the Voyager 1 spacecraft was launched towards Jupiter and Saturn. It flew by Jupiter in March 1979 and Saturn in November 1980. In August 2012, Voyager 1 left the Sun's heliosphere and is now traversing the interstellar medium as the most distant human-made object in history.

#OnThisDay in 1977, NASA launched the Voyager 1 probe on its journey to study the outer solar system. After 46 years of operation, the probe is still transmitting data, and at over 15.2 billion miles, is the most distant man-made object from Earth. #SpaceExploration

This week has been tough. We've had to say bye to many colleagues To them: You were fantastic! Your dedication and service to our research community and our country have been valuable and valued. You are, and will always be, part of the amazing history of NASA. open.substack.com/pub/plasmane...

let’s hope scientists can restore access to DSCOVR at some point since having reliable solar wind information is very important for monitoring space weather conditions.

On July 1, 2025, NASA reported the discovery of a new comet, called 3I/ATLAS. It is only the third known object outside our solar system ever to be observed. THIS IS REALLY COOL. Here’s why: 🧵⬇️

Erin strengthens, becoming the first hurricane of the 2025 Atlantic Season. This hi-res view shows several lightning flashes within an intensifying storm.

2019: "NASA is one of the most recognised, revered and iconic brands in the world" (davidsonbranding.com.au/nasa-modern-...). 2025: >1000 NASA mission-support staff (and 2800 other NASA employees) have left under the current administration.

Trying to choose the cover for my 2026 Aurora Calendar. Which one do you like more: left or right? Make sure to tap and expand both images. Thanks!

Mark diaries: 1 yr from today! 12th Aug 2026: total solar eclipse🌞🌚🌍 for Northern Spain, Greenland and West Iceland. Where's the best spot? Well eclipsophile.com has kindly calculated the average Aug cloud cover & Spain looks v promising 🧪🔭 📷: M Tomasso ℹ️: www.timeanddate.com/eclipse/sola...

This image from India's Chandrayaan-2 orbiter from 7 March 2025 shows Intuitive Machines' IM-2 lunar lander lying on its side in a crater. On the left rim is the shadow of one of the legs sticking up into space. Long gouges at right show how the lander dragged across the surface before tipping.

July 2025 comes in third hottest for NASA's GISTEMP surface instrumental record, behind only 2024 and 2023. 🧪⚒️ Data freely available from GISS: data.giss.nasa.gov/gistemp/

On Aug. 10, 1969, Apollo 11 astronauts Neil A. Armstrong, Michael Collins, and Edwin E. “Buzz” Aldrin completed their 21-day quarantine after returning from the Moon. cerebral-overload.com/?p=114735

#OTD August 10, 1966 Lunar Orbiter 1, was launched from Cape Kennedy to photograph possible Apollo landing sites from lunar orbit. Www.contactlight.de

Ad Astra, Commander Jim Lovell.

Guten Morgen zusammen - wie immer mit einem aktuellen Bild der Sonne via Satellit SDO, hier mal wieder kräftig reingezoomt (und im ALT-Text beschrieben und kurz erklärt).

13 years of roving Mars had taken its toll! Image captured 12 hours ago by Curiosity. #Mars Aug. 6, 2025 - Sol 4621 🧪🔭 Credits: NASA/JPL-Caltech/MSSS

Close-up detail of Comet 67P/Churyumov-Gerasimenko. This image was taken by Rosetta’s OSIRIS narrow-angle camera and downloaded #OTD 6 August in 2014. www.esa.int/ESA_Multimed...

Confirmed: July average of atmospheric CO2 at Mauna Loa was ~2.3 ppm higher than last year, at 427.9 ppm. Overall, we're still speeding in the wrong direction!

M4.4 solar flare from sunspot region 4168 Read the complete news item on https://www.spaceweatherlive.com/l/news/584

The STS-113 crewmembers used a 35mm still camera to record this image of Mt. #Etna #Volcano erupting on the island of Sicily. US SPACE PROGRAM STS-113 mission #Space #Shuttle #Endeavour Launched: November 23, 2002 wikiarchives.space/picture.php?... NASA/j. Roger

Tremendo trabajo de divulgación de EPO @comunidadecusa.bsky.social del trabajo de desarrollo de instrumentación espacial que hacemos!! Gracias ECUSA!!

New Comic Strip found: Arctic Circle by Alex Hallatt for Tue, 29 Jul 2025 https://www.arcamax.com/thefunnies/arcticcircle/s-3787933 #comicstrip #arcticcirclestrip

If you're having a rough day, remember that in 1991 Tim Berners-Lee's paper for the World Wide Web was rejected and he was relegated to the poster session.

🔭 Coronal Loops on the Sun Image Credit & Copyright: Andrea Vanoni apod.nasa.gov/apod/ap25073...

On January 15, 2022, the Hunga Tonga-Hunga Ha‘apai volcano violently erupted, sending massive amounts of ash and water vapor high into the sky. This near-limb view showcases impressive detail within the large plume. (2/4)

UK gets first female Astronomer Royal in 350 years

July 30, 1971 - 54 years ago #OTD: David Scott and James Irwin became the seventh and eighth astronauts to land on the Moon with #Apollo15. David Scott and James Irwin deployed experiments & made the first-ever drives in the Lunar Roving Vehicle contactlight.de

Apollo 15, LM "Falcon" on the Moon, Hadley Rille/Apennine Mountains , #OTD 30 July 1971 contactlight.de

“Okay, Houston. As I stand out here in the wonders of the unknown at Hadley, I sort of realize there's a fundamental truth to our nature. Man must explore. And this is exploration at its greatest.” – David Scott #Apollo15 | July 30, 1971 contactlight.de

X-37B is getting ready for its next flight. Launch NET August 21. boeing.mediaroom.com/2025-07-28-B...

Skylab 3 Launch by #NASA on the #Commons

The Moon is receding from Earth at 3.8 cm per year. The Earth is drifting away from the Sun at 1.5 cm/year. The Sun is expanding over time too. The perfect alignment that gives us our current eclipses is a unique convergence in time and will be gone in the future.

Confirmed: another big jump in atmospheric CO2 concentration. The June average at Mauna Loa was 429.6 ppm, that's 2.7 ppm more than last year! #co2 #emissions #climatechange

Hey! Lookie what PUNCH (@punch-mission.bsky.social) just saw! Two different solar storms crossing the entire inner solar system! NASA's site doesn't thumbnail well, so click the link for the movie and other images. ☀️🔭🛰️🧪 science.nasa.gov/blogs/punch/...