Lights Over lapland is excited to announce that Autumn Aurora Adventures are available for immediate booking! Reserve your adventure of a lifetime in Abisko National Park, Sweden today!
| || |
JUNO PLUNGES TOWARD THE GREAT RED SPOT: Later today, July 10th at 6:55 pm PDT, NASA's Juno spacecraft will fly directly over the biggest storm in the solar system: Jupiter's Great Red Spot. Wide enough to swallow Earth twice, the swirling anticylone is at least 150 years old and Juno will come closer to it than any spacecraft in history. Scientists aren't sure what Juno's high resolution cameras and cloud-piercing sensors will see when they swoop just 9,000 km above the cloudtops. Stay tuned for something new!
RECTANGULAR MOON: When the full Moon rose over Casco Bay in Maine on July 9th, longtime skywatcher John Stetson expected to see the usual lunar disk. Instead, he photographed a strange lunar rectangle. "The rising Moon looked like an iceberg ... faint and shaped like a giant block of ice," he says.
What happened? Atmospheric optics expert Les Cowley explains:
"John says '..the Moon looked like an iceberg.' That's appropriate because this mirage is a result of cold water. The cold sea offshore of Maine cooled the air above it. Above that was warmer air – a temperature inversion and the stuff of mock-mirages. The Moon's rays passing through it bend and twist into several moon images, some upright some inverted. They combine together into the rectangular 'iceberg.'"
Realtime Space Weather Photo Gallery
SOLAR ECLIPSE SPACE PENDANTS: Would you like to support our Solar Eclipse Balloon Network? Here's one way: Buy a space pendant. This solar eclipse-themed necklace flew to the stratosphere on July 2, 2017, attached to the payload of an Earth to Sky Calculus space weather balloon:
The payload contained more just like it. If you buy one now for $79.95, we will fly it back to the stratosphere during the Great American Solar Eclipse on August 21, 2017, where it will be enveloped by the Moon's cool shadow above our launch site in Oregon. No additional charge! Just make a note in the COMMENTS BOX of the shopping cart: "Please fly my pendant into the eclipse!" Each pendant comes with a greeting card showing the jewelry in flight and telling the story of its journey to the stratosphere and back again.
More items from the edge of space may be found in the Earth to Sky Store. All proceeds support atmospheric radiation monitoring and hands-on STEM education.
Far Out Gifts: Earth to Sky Store
All proceeds support hands-on STEM education
SOLAR FLARE AND RADIO BLACKOUT: Sunspot AR2665 has grown into a behemoth almost as wide as the planet Jupiter: movie. Stretching more than 125,000 km from end to end and containing dozens of dark cores, the active region is an now easy target for backyard solar telescopes. Amateur astronomer Peter Desypris sends this July 9th photo from Syros island, Greece:
"This is the biggest sunspot of 2017 so far," says Desypris. "I photographed it using an 8'inch LX200 telescope and a safe solar filter."
On July 9th at 0318 UT the big sunspot erupted, producing an M1.3-class solar flare. Telescopes onboard NASA's Solar Dynamics Observatory recorded the explosion's extreme ultraviolet flash:
A pulse of UV and X-radiation from the flare ionized the top of Earth's atmosphere. This, in turn, altered the normal propagation of shortwave radio transmissions on the dayside of our planet. A map from NOAA shows the geographical regions affected: mostly Australia and east Asia. People who might have noticed blackouts, fades, and other transmission irregularities include aviators, mariners, and ham radio operators.
Considering its extreme size, AR2665 has been relatively calm so far. Stronger flares and CMEs could be in the offing, however, as the sunspot continues to grow and turns toward Earth. Stay tuned for updates. Free: Solar Flare Alerts
Realtime Space Weather Photo Gallery
Realtime Noctilucent Cloud Photo Gallery
Realtime Aurora Photo Gallery
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 Jul. 10, 2017, the network reported 5 fireballs.
(4 sporadics, 1 July Pegasid)
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 July 10, 2017 there were 1803 potentially hazardous asteroids.
| |Recent & Upcoming Earth-asteroid encounters:
|Asteroid || |
|2017 MB5 || |
|2017 MQ7 || |
|2017 MA5 || |
|2017 MP7 || |
|2017 MC4 || |
|2017 NH || |
|2017 MR8 || |
|2007 MB4 || |
|2017 BS5 || |
|2014 OA339 || |
Notes: LD means "Lunar Distance." 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU. MAG is the visual magnitude of the asteroid on the date of closest approach.
|3122 || |
| ||Cosmic Rays in the Atmosphere |
Readers, thank you for your patience while we continue to develop this new section of Spaceweather.com. We've been working to streamline our data reduction, allowing us to post results from balloon flights much more rapidly, and we have developed a new data product, shown here:
This plot displays radiation measurements not only in the stratosphere, but also at aviation altitudes. Dose rates are expessed as multiples of sea level. For instance, we see that boarding a plane that flies at 25,000 feet exposes passengers to dose rates ~10x higher than sea level. At 40,000 feet, the multiplier is closer to 50x. These measurements are made by our usual cosmic ray payload as it passes through aviation altitudes en route to the stratosphere over California.
What is this all about? Approximately 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 radiation sensors that detect cosmic rays, a surprisingly "down to Earth" form of space weather. Cosmic rays can seed clouds, trigger lightning, and penetrate commercial airplanes. Furthermore, there are studies ( #1, #2, #3, #4) linking cosmic rays with cardiac arrhythmias and sudden cardiac death in the general population. Our latest measurements show that cosmic rays are intensifying, with an increase of more than 13% since 2015:
Why are cosmic rays intensifying? The main reason is the sun. Solar storm clouds such as coronal mass ejections (CMEs) sweep aside cosmic rays when they pass by Earth. During Solar Maximum, CMEs are abundant and cosmic rays are held at bay. Now, however, the solar cycle is swinging toward Solar Minimum, allowing cosmic rays to return. Another reason could be the weakening of Earth's magnetic field, which helps protect us from deep-space radiation.
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.
The data points in the graph above correspond to the peak of the Reneger-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 Reneger and Georg Pfotzer discovered the maximum using balloons in the 1930s and it is what we are measuring today.
| ||The official U.S. government space weather bureau |
| ||The first place to look for information about sundogs, pillars, rainbows and related phenomena. |
| ||Researchers call it a "Hubble for the sun." SDO is the most advanced solar observatory ever. |
| ||3D views of the sun from NASA's Solar and Terrestrial Relations Observatory |
| ||Realtime and archival images of the Sun from SOHO. |
| ||from the NOAA Space Environment Center |
| ||a proud supporter of science education and Spaceweather.com |
| ||fun to read, but should be taken with a grain of salt! Forecasts looking ahead more than a few days are often wrong. |
| ||from the NOAA Space Environment Center |
| ||the underlying science of space weather |
| ||Beautyz for top beauty products reviews and their buying guides |
| ||Reviews here can help you to pick up best memory foam mattresses. |
| ||These links help Spaceweather.com stay online. Thank you to our supporters! || || |
| || || || |