Space. Weather. com - - News and information about meteor showers, solar flares, auroras, and near- Earth asteroids. Lights Over Lapland is excited to announce that our Customizable Aurora Adventures are available for immediate booking! Reserve your adventure of a lifetime in Abisko National Park, Sweden today! SOLAR SECTOR BOUNDARY CROSSING: On Nov.

Earth will cross a fold in the heliospheric current sheet- -a vast wavy structure in interplanetary space separating regions of opposite magnetic polarity. This is called a "solar sector boundary crossing," and it could trigger geomagnetic activity around Earth's poles. Arctic sky watchers should be alert for auroras when the crossing occurs. Free: Aurora Alerts. GEOMAGNETIC STORM PREDICTED (G1- CLASS): Earth's crossing of the heliospheric current sheet on Nov. Nov. 7th. That's when a high- speed solar wind stream is expected to reach our planet.

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Its source is a large northern hole in the sun's atmosphere: This is a "coronal hole"- -a region where the sun's magnetic field peels back and allows solar wind to escape. NOAA forecasters say there is a 4.

G1- class geomagnetic storms on Nov. Earth. There is a similar chance of storms on Nov. This is going to be a high- latitude event. Arctic sky watchers will almost certainly see auroras mixed with moonlight on Nov. Faint auroras may be seen as well from the northernmost tier of US states- -e. Maine, the northern tip of Michigan, and Washington. Free: Aurora Alerts. Realtime Aurora Photo Gallery.

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GLOBAL RADIATION MONITORING: Since 2. Spaceweather. com and the students of Earth to Sky Calculus have conducted an ambitious, ongoing campaign to measure atmospheric radiation around our planet.

So far we have flown more than 2. US states. This plot shows sample atmospheric radiation profiles from Norway, Chile, California, Oregon and Washington: The horizontal axis is altitude.

Typical profiles range from ~sea level to more than 1. The vertical axis is X- ray/gamma- ray dose rate between 1. V and 2. 0 Me. V. These energies span the range of medical X- ray machines and airport security scanners. Latitudes noted in parentheses are magnetic, not geographic. Most of the radiation we detect comes from deep space in the form of cosmic rays- -but we are always on the alert for other sources, too, such as atmospheric nuclear tests or leaks from power plants.

Frequent flights allow us to not only map the geographical distribution of radiation, but also to monitor how it changes with time. We're about to add a new country to our network: Mexico. On Nov. 8th we will travel to Mexico City to launch space weather balloons in collaboration with Prof. Juan Sumaya and students from the Universidad Autonoma del Estado de México.

Stay tuned for reports from Mexico later this week. Realtime Space Weather Photo Gallery.

THIS WATCH FLEW TO SPACE .. AND KEPT ON TICKING: On Aug. Great American Solar Eclipse, the students of Earth to Sky Calculus launched 1.

They soared into the stratosphere, photographing the shadow of the Moon more than 1. Earth's surface. As a fundraiser, one of the balloons carried this wristwatch: With the sun, Earth, and Moon perfectly aligned, the watch entered the space- cold shadow of the Moon … and kept on ticking! Watch the video. It survived temperatures lower than - 4. C and cosmic ray dose rates more than 1. You can have one for $9. Each timepiece comes with a unique gift card showing the watch floating at the top of Earth's atmosphere and touching the shadow of the Moon. The interior of the card tells the story of the flight and confirms that this gift has been to the edge of space and back again.

Far Out Gifts: Earth to Sky Store. All proceeds support hands- on STEM education Every night, a network. NASA. all- sky cameras scans the skies above the United. States for meteoritic fireballs.

Automated software. NASA's Meteoroid Environment Office. Earth's atmosphere and many other characteristics. Daily results are presented here on Spaceweather. On Nov. 5, 2. 01. 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). Earth than 0. 0. 5 AU. None of the. known PHAs is on a collision course with our planet. On. November 6, 2. Notes: LD means. "Lunar Distance." 1 LD = 3. Earth and the Moon.

LD also equals 0. AU. MAG is the visual magnitude of the asteroid on. Cosmic Rays in the Atmosphere.

Readers, thank you for your patience while we continue to develop this new section of Spaceweather. 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 2. At 4. 0,0. 00 feet, the multiplier is closer to 5.

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. 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. Watch Against The Sun Online Forbes.

Our latest measurements show that cosmic rays are intensifying, with an increase of more than 1. 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 1. V to 2. 0 Me. V. 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 6. 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 1. The. official U. S.

The. first place to look for information about sundogs. Researchers. call it a "Hubble for the sun." SDO. D. views of the sun from NASA's Solar and Terrestrial.

Relations Observatory Realtime. Sun from SOHO. from. NOAA Space Environment Center 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. These links help Spaceweather.

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Apple Watch Buying Guide 2. Best Model, Size, Material and Strap. Watch Till We Meet Again HD 1080P. Which Apple Watch should you buy? The range of models, materials, colours and straps was baffling enough even before the new Apple Watch 3 was unveiled, which has made things even more complicated. Here, we help you choose between Apple Watch Series 1,2, and 3, and which models within those will be best for you. The Apple Watch made a big splash when it launched in 2.

Christmas presents that year. It later saw a major software update with watch.

OS 2, and will soon be running watch. OS 4. There have also been plenty of new straps, and some new colour options along the way too. Watch Manhattan Online Facebook. For those without an Apple Watch or those ready to buy a new one, the big new arrival came in September of 2. Apple released the Apple Watch Series 3 range, including the first cellular model - find out more in our Series 3 preview.

But which model of Apple Watch is right for you, your needs and your budget? Which edition, size, case material, colour and strap should you go for? Which is the best value- for- money choice? With dozens of combinations available, the choice can be overwhelming.

In our Apple Watch buying guide, we explain all the options and help you decide a) which Apple Watch you want, b) which Apple Watch will suit you, c) which Apple Watch you can afford, and d) where to buy your Apple Watch from. Where can I buy an Apple Watch? You can now pick up the Watch Series 1 from an Apple Store (or order one online), where you can also buy the very expensive Apple Watch Edition, with pre- orders for the Series 3 launching on 1. September, with watches in stores from 2. September. Prices range from £2.

Note that Apple is no longer selling the Gold models of Apple Watch Edition, which were available for up to £1. Apple Watch series was launched. You can also buy the Apple Watch from third- party retailers, including John Lewis, Currys, and Very, where you may still be able to find the Series 2 models for a while yet even though Apple itself has stopped selling them. For more information on picking up the latest model, check out our dedicated guide to where to buy the Apple Watch 3. The latest models. Apple now sells the Apple Watch Series 1, Apple Watch Series 3, Apple Watch Nike+, Apple Watch Hermès and Apple Watch Edition (the latter three are all part of Series 3, too).

With five different watches to choose from, or six if you include the Series 2 that is still on sale at some third- party retailers, it is really tricky to know where to start. Do I need cellular? If you want to buy a Series 3 model, the first big choice is between the regular GPS watch and the more expensive cellular model, which uses an electronic SIM card to be able to make phone calls and get online independently of your i. Phone. The cellular model also comes with a red accent on the crown to differentiate it, and costs £7.

EE, currently the only UK network to offer the cellular Apple Watch. Whether you opt for the regular or cellular (GPS or GPS + cellular to use Apple's terms) mostly depends on your likely usage. If you're always likely to have both your i.

Phone and Watch on you at the same time, you really won't see any benefit from the cellular connectivity, so it won't be worth the cost. However, if you like the idea of being able to leave your phone at home and still take calls and check emails - say when you're exercising - then you could benefit from the new version's improved independence. The final factor is that red crown. It's only included on the cellular models, so if you're not a fan of the design tweak you might want to steer clear.

Special editions. The Apple Watch Nike+, Apple Watch Hermès and the Apple Watch Edition all have the same internals and specifications as the Apple Watch Series 3, but have distinct aesthetic appearances. And you can choose between aluminium and stainless steel for the case of the Apple Watch Series 3. The Apple Watch Nike+, which is made from aluminium, is aimed at those who love running and are looking for a sport- orientated smartwatch. We see the Nike+ as an Apple Watch Sport replacement. The Apple Watch Hermès and the Apple Watch Edition are both aesthetically different to the standard Series 3 watch, too.

The Hermès is made with stainless steel, with a unique strap and a Hermès stamp on the back, while the Apple Watch Edition is made with white ceramic, giving it a unique design. Both of these watches start at more than £1,0. Apple Watch Series 1 vs Apple Watch Series 3. If you're not looking for the latest model, there's the Apple Watch Series 1, which is a rebadged version of the original Apple Watch that has a new upgraded processor. The Apple Watch Series 3 features built- in GPS, optional cellular internet, a faster processor, a faster wireless chip, IP6. Series 1. Both the Series 1 and Series 3 come with a dual- core processor. It's important to note, though, that the Series 1 comes with a S1.

P dual- core (not to be confused with the single- core S1), while the Series 3 houses an S3 dual- core processor, which should deliver substantially faster performance. Looking at the materials used, the stainless steel version of the Series 3 has the sturdier sapphire glass screen, while the Series 1 is protected with Ion- X glass.

It should be noted that the aluminium models of the Series 3 use the same Series 1 glass material. Price- wise, the Series 1 starts at £2.

Series 3 starts at £3. Prices increase when you start changing size, straps and materials, though it's worth noting that it's only available in Silver or Space Grey aluminium. There is only the Sport Band available for Series 1 models, but if you want a different strap you can purchase it separately, but that will of course cost you a few more pennies - all the same straps are compatible regardless of your watch model. Given the price difference of just £8. Series 1 and the base Series 3, it's hard not to recommend the later model.

It's not only faster, but has several features the older model is lacking, is available in more colours, and will enjoy Apple software support for longer - it's a better bet unless you really can't stretch your budget beyond £2. Should I upgrade from the original Apple Watch? If you've already got an Apple Watch, it's worth considering whether it's really necessary to upgrade to Apple Watch Series 1 or Series 3. Bear in mind too that recently it was reported that Apple has extended the usual 1 year warranty of first- gen Apple Watches to three years following reports of swelling and expanding batteries. If you think yours is affected, it might be worth checking your warranty before upgrading. The answer is yes if you are super- excited about the idea of built- in GPS, cellular connection, water resistance and a brighter screen, all of which are most useful for sporty types.

If those things sound appealing but nothing special, it's then worth considering whether the speedier dual- core processor is really worth the extra investment. The dual- core S1. P processor is up to 5.

Apple Watch, while Apple claims the S3 processor is another 7. This will make a difference when considering the speed at which apps are launched. The chips also feature a better GPU, making images look better and render faster. So it all depends on how sluggish you feel your current Apple Watch is. We think it's worth popping into an Apple Store if you can to test the speed of the Series 1 and Series 3 to see if the difference is noticeable enough to you personally. If you haven't already done so, we'd recommend updating your Apple Watch to watch.

OS 3 - and watch. OS 4 when it comes out on 1.

September - before you consider upgrading too, as it brings a healthy boost to the user interface and the speed of the watch and its apps. Should you buy the 3. The Apple Watch comes in two sizes of case: 3.