AI writing is everywhere -- except here. This website is written by Dr. Tony Phillips, a carbon-based lifeform with 30 yrs of forecasting experience. Our guarantee: If you find a mistake, it was made by a real human being.
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WAS THAT A CANNIBAL CME? A dense CME hit Earth on Oct. 10th. It was so dense, it might have actually been two CMEs. The technical term is "Cannibal CME." This is when a fast CME overtakes and "snowplows" a slower CME in front of it. Two closely-spaced CMEs left the sun last week; they may have merged en route to Earth.
When the suspected Cannibal struck on Oct. 10th, the plasma density around Earth jumped 10-fold to more than 100 protons/cc. The weighty blow caused an explosion of auroras around the Arctic Circle:
"The colors were visible to the naked eye--simply stunning!" says photographer Karsten Berger of Levi, Finland. "Even rare blue auroras were present."
At the time she took the picture, a strong (G3-class) geomagnetic storm was underway. It lasted for almost 6 hours, eventually fading as night fell across North America. Sky watchers in the USA saw only a faint echo of the initial outburst.
Now, in the wake of the CME, solar wind is blowing faster than 600 km/s. This could spark a minor G1-class geomagnetic storm with high-latitude auroras on Oct. 11th. Aurora alerts: SMS Text
Realtime Aurora Photo Gallery
Free: Spaceweather.com Newsletter
ANOTHER SIGNIFICANT SOLAR FLARE--UPDATED: Sunspot 4549 erupted again on Oct. 10th (1515 UTC), producing an M6.4-class solar flare and a widespread shockwave in the sun's atmosphere:
Above: A difference movie from NOAA's GOES-19 Extreme UV imager
This eruption hurled a CME into space, and it may have an Earth-directed component. A preliminary NASA model suggests a near miss or glancing blow on Oct. 13th. Stay tuned for an improved forecast. CME impact alerts: SMS Text
Realtime Space Weather Photo Gallery
Free: Space Weather Newsletter
SHATTERED PLANETESIMAL METEORITE PENDANT: When meteorites land on Earth, they usually stay on Earth. This one went back to space. On Sept. 16, 2026, we flew this genuine iron meteorite pendant to the stratosphere onboard a cosmic ray research balloon:
You can have it for $278.95. Thought to be the remnant of a shattered planetesimal, the original meteorite crashed to Earth in northern Sweden where it was preserved in glacial ice. Jewelers mounted this polished spherical fragment in a sterling silver "planetary rings" frame.
You can tell it's real just by looking. The surface of the sphere is covered with Widmanstätten patterns--interlocking crystals of iron-nickel alloy that grew inside the core of an ancient planetesimal as it cooled over millions of years.
The students of Earth to Sky Calculus are selling space pendants to pay the helium bill for their high-altitude balloon program. Each one comes with a full-color greeting card showing the jewelry in flight.
Far Out Gifts: Earth to Sky Store
All sales support hands-on STEM education
Realtime Space Weather Photo Gallery
Free: Space Weather Newsletter
Realtime Aurora Photo Gallery
Free: Spaceweather.com Newsletter
Every night, a network
of
NASA
all-sky cameras scans the skies above the United
States for meteoritic fireballs. Automated software
maintained by NASA's Meteoroid Environment Office
calculates their orbits, velocity, penetration depth
in Earth's atmosphere and many other characteristics.
Daily results are presented here on Spaceweather.com.
On October 10, 2026, the network reported 7 fireballs.
(6 sporadics, 1 Southern Taurid)
In this diagram of the inner solar system, all of the fireball orbits intersect at a single point--Earth. The orbits are color-coded by velocity, from slow (red) to fast (blue).
[Larger image] [movies]
Potentially Hazardous Asteroids (
PHAs)
are space rocks larger than approximately 100m that
can come closer to Earth than 0.05 AU. None of the
known PHAs is on a collision course with our planet,
although astronomers are finding
new
ones all the time.
On October 11, 2026 there were 2349 potentially hazardous asteroids.
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Recent
& Upcoming Earth-asteroid encounters:
| Asteroid |
Date(UT) |
Miss Distance |
Velocity (km/s) |
Diameter (m) |
| 2026 TD1 |
2026-Oct-05 |
6.7 LD |
6.8 |
13 |
| 2026 SA17 |
2026-Oct-05 |
10 LD |
11.3 |
22 |
| 2026 TU2 |
2026-Oct-05 |
3.7 LD |
8.2 |
7 |
| 2026 TP2 |
2026-Oct-05 |
0.6 LD |
9.7 |
16 |
| 2026 TX1 |
2026-Oct-05 |
12.9 LD |
9 |
33 |
| 2026 TA2 |
2026-Oct-05 |
6.6 LD |
11.8 |
39 |
| 2026 TR |
2026-Oct-05 |
19.1 LD |
8 |
29 |
| 2026 TH1 |
2026-Oct-05 |
12.2 LD |
7.1 |
10 |
| 2026 TP1 |
2026-Oct-06 |
16.5 LD |
6.5 |
24 |
| 2026 TS2 |
2026-Oct-06 |
1.3 LD |
4.3 |
5 |
| 2026 TY3 |
2026-Oct-06 |
15.5 LD |
8.9 |
10 |
| 2026 TW1 |
2026-Oct-06 |
9.1 LD |
12.1 |
17 |
| 2026 TZ4 |
2026-Oct-06 |
1.4 LD |
17.4 |
6 |
| 2026 TE6 |
2026-Oct-06 |
1.7 LD |
10.3 |
11 |
| 2026 TU3 |
2026-Oct-07 |
0.8 LD |
14.3 |
5 |
| 2026 TC2 |
2026-Oct-07 |
2.8 LD |
21.6 |
24 |
| 2024 TD16 |
2026-Oct-07 |
14.2 LD |
11.8 |
17 |
| 2026 TY1 |
2026-Oct-07 |
3.1 LD |
4.4 |
6 |
| 2026 TN8 |
2026-Oct-07 |
2.4 LD |
23.9 |
21 |
| 2026 TQ2 |
2026-Oct-07 |
6.3 LD |
9 |
14 |
| 2026 TV2 |
2026-Oct-07 |
2.7 LD |
7 |
7 |
| 2026 TX |
2026-Oct-08 |
2.2 LD |
10.3 |
10 |
| 2026 TD6 |
2026-Oct-08 |
7.2 LD |
4.1 |
10 |
| 2026 TY5 |
2026-Oct-08 |
12.8 LD |
16.7 |
42 |
| 2026 TA6 |
2026-Oct-08 |
3 LD |
3.4 |
6 |
| 2026 TH2 |
2026-Oct-08 |
3.9 LD |
28 |
19 |
| 2026 TQ1 |
2026-Oct-08 |
2.2 LD |
9 |
8 |
| 2026 TK4 |
2026-Oct-08 |
10.4 LD |
13.3 |
14 |
| 2026 TW7 |
2026-Oct-08 |
2.8 LD |
16.8 |
7 |
| 2015 TS238 |
2026-Oct-08 |
4.7 LD |
15.8 |
30 |
| 2026 TB5 |
2026-Oct-08 |
1.4 LD |
11.5 |
8 |
| 2026 TR3 |
2026-Oct-09 |
4.7 LD |
14.9 |
10 |
| 2026 TB3 |
2026-Oct-09 |
1.7 LD |
11.1 |
7 |
| 2026 TJ4 |
2026-Oct-09 |
6 LD |
17.2 |
31 |
| 2026 TU8 |
2026-Oct-09 |
0.7 LD |
10.2 |
6 |
| 2026 TO |
2026-Oct-09 |
8.6 LD |
6.9 |
17 |
| 2026 TG2 |
2026-Oct-09 |
19.5 LD |
8.9 |
29 |
| 2026 TN4 |
2026-Oct-10 |
8.2 LD |
9.7 |
12 |
| 2019 SD8 |
2026-Oct-10 |
18.7 LD |
9.5 |
12 |
| 2026 TL6 |
2026-Oct-10 |
0.7 LD |
11.8 |
4 |
| 2026 TB6 |
2026-Oct-10 |
5.4 LD |
11.9 |
11 |
| 2026 TO8 |
2026-Oct-11 |
3.5 LD |
9 |
10 |
| 2026 TC6 |
2026-Oct-12 |
9.8 LD |
10.3 |
21 |
| 2026 TX3 |
2026-Oct-12 |
18.9 LD |
8.7 |
26 |
| 2026 TV3 |
2026-Oct-12 |
9.2 LD |
9 |
21 |
| 2026 TQ8 |
2026-Oct-12 |
11 LD |
23 |
45 |
| 2026 TS3 |
2026-Oct-12 |
12.1 LD |
9.4 |
27 |
| 2026 TC1 |
2026-Oct-13 |
16.1 LD |
13.2 |
31 |
| 2026 TJ |
2026-Oct-13 |
19.7 LD |
7.3 |
120 |
| 2026 TR8 |
2026-Oct-13 |
8.9 LD |
9.1 |
18 |
| 2026 TG6 |
2026-Oct-13 |
12.6 LD |
15.4 |
28 |
| 2026 TP6 |
2026-Oct-14 |
0.6 LD |
10.3 |
11 |
| 2026 TF4 |
2026-Oct-15 |
7.1 LD |
4.9 |
12 |
| 2022 UP6 |
2026-Oct-15 |
2.6 LD |
9 |
8 |
| 2000 SZ162 |
2026-Oct-16 |
19.9 LD |
5.7 |
12 |
| 2026 TE2 |
2026-Oct-16 |
6 LD |
14.7 |
22 |
| 2026 TB2 |
2026-Oct-16 |
5 LD |
8.8 |
32 |
| 2026 TS |
2026-Oct-18 |
2.4 LD |
10.3 |
54 |
| 2026 TD2 |
2026-Oct-20 |
7.3 LD |
12.3 |
43 |
| 2026 TP |
2026-Oct-20 |
12.2 LD |
9.9 |
51 |
| 2020 FN3 |
2026-Oct-20 |
12.4 LD |
5.8 |
45 |
| 2026 TU1 |
2026-Oct-22 |
12.8 LD |
7.9 |
26 |
| 2026 TV8 |
2026-Oct-22 |
4.8 LD |
9.2 |
25 |
| 2017 UX7 |
2026-Oct-22 |
17 LD |
10.3 |
27 |
| 2026 TT3 |
2026-Oct-24 |
12.8 LD |
12.8 |
48 |
| 2026 TB8 |
2026-Oct-25 |
7.1 LD |
7.8 |
56 |
| 2018 GS1 |
2026-Oct-28 |
11.1 LD |
9.3 |
108 |
| 2022 UV21 |
2026-Oct-29 |
14.8 LD |
9.6 |
13 |
| 2025 UK9 |
2026-Oct-31 |
0.8 LD |
7.8 |
4 |
| 524522 |
2026-Nov-02 |
15.7 LD |
8.7 |
277 |
| 2021 VC4 |
2026-Nov-03 |
6 LD |
11.2 |
15 |
| 2017 WJ2 |
2026-Nov-05 |
15.6 LD |
11.8 |
118 |
| 2016 VZ1 |
2026-Nov-05 |
20 LD |
13.5 |
21 |
| 2001 KF54 |
2026-Nov-06 |
18.9 LD |
16.4 |
391 |
| 2025 UF5 |
2026-Nov-09 |
18.9 LD |
1.9 |
10 |
| 2015 VH65 |
2026-Nov-10 |
9.7 LD |
8 |
10 |
| 2012 YD7 |
2026-Nov-10 |
18.6 LD |
7.5 |
49 |
| 2023 VF3 |
2026-Nov-11 |
8.5 LD |
8.8 |
19 |
| 2022 MP2 |
2026-Nov-13 |
19.8 LD |
3.8 |
23 |
| 2025 VG5 |
2026-Nov-13 |
18.2 LD |
4.9 |
16 |
| 2023 VE6 |
2026-Nov-17 |
18.4 LD |
10.1 |
13 |
| 2019 WT1 |
2026-Nov-18 |
19.7 LD |
9.7 |
16 |
| 2018 NE1 |
2026-Nov-19 |
16.7 LD |
13.3 |
74 |
| 2025 CP1 |
2026-Nov-30 |
12.9 LD |
10.8 |
6 |
| 2019 XF2 |
2026-Dec-04 |
3.1 LD |
10.2 |
14 |
| 2023 XH3 |
2026-Dec-06 |
18.7 LD |
16.5 |
14 |
| 2020 XC3 |
2026-Dec-08 |
14.5 LD |
14.3 |
110 |
| 2016 NV |
2026-Dec-08 |
14.3 LD |
10.4 |
379 |
Notes: LD means
"Lunar Distance." 1 LD = 384,401 km, the distance
between Earth and the Moon. 1 LD also equals 0.00256
AU.
| |
Cosmic Rays in the Atmosphere |
SPACE WEATHER BALLOON DATA: Almost once a week, Spaceweather.com and the students of Earth to Sky Calculus fly space weather balloons to the stratosphere over California. These balloons are equipped with sensors that detect secondary cosmic rays, a form of radiation from space that can penetrate all the way down to Earth's surface. Our monitoring program has been underway without interruption for 10 years, resulting in a unique dataset of in situ atmospheric measurements.
Latest results (Nov. 2024): Atmospheric radiation is sharply decreasing in 2024. Our latest measurements in November registered a 10-year low:
What's going on? Ironically, the radiation drop is caused by increasing solar activity. Solar Cycle 25 has roared to life faster than forecasters expected. The sun's strengthening and increasingly tangled magnetic field repels cosmic rays from deep space. In addition, solar coronal mass ejections (CMEs) sweep aside cosmic rays, causing sharp reductions called "Forbush Decreases." The two effects blend together to bring daily radiation levels down.
.Who cares? Cosmic rays are a surprisingly "down to Earth" form of space weather. They can alter the chemistry of the atmosphere, trigger lightning, and penetrate commercial airplanes. According to a study from the Harvard T.H. Chan school of public health, crews of aircraft have higher rates of cancer than the general population. The researchers listed cosmic rays, irregular sleep habits, and chemical contaminants as leading risk factors. A number of controversial studies (#1, #2, #3, #4) go even further, linking cosmic rays with cardiac arrhythmias and sudden cardiac death.
Technical notes: The radiation sensors onboard our helium balloons detect X-rays and gamma-rays in the energy range 10 keV to 20 MeV. These energies span the range of medical X-ray machines and airport security scanners.
Data points in the graph labeled "Stratospheric Radiation" correspond to the peak of the Regener-Pfotzer maximum, which lies about 67,000 feet above central California. When cosmic rays crash into Earth's atmosphere, they produce a spray of secondary particles that is most intense at the entrance to the stratosphere. Physicists Eric Regener and Georg Pfotzer discovered the maximum using balloons in the 1930s and it is what we are measuring today.
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The
official U.S. government space weather bureau |
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The
first place to look for information about sundogs,
pillars, rainbows and related phenomena. |
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Researchers
call it a "Hubble for the sun." SDO
is the most advanced solar observatory ever. |
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3D
views of the sun from NASA's Solar and Terrestrial
Relations Observatory |
| |
Realtime
and archival images of the Sun from SOHO. |
| |
information about sunspots based on the latest NOAA/USAF Active Region Summary |
| |
current counts of failed and deployed Starlink satellites from Jonathan's Space Page. See also, all satellite statistics. |
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Authoritative predictions of space junk and satellite re-entries |
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from
the NOAA Space Environment Center |
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fun to read, but should be taken with a grain of salt! Forecasts looking ahead more than a few days are often wrong. |
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from the NOAA Space Environment Center |
| |
the
underlying science of space weather |
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Got a chipped or cracked windshield that prevents you from seeing space weather events while driving? Get windshield replacement from SR Windows & Glass with free mobile auto glass service anywhere in the Phoenix area. |
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