![]() ![]() The sun's strengthening and increasingly tangled magnetic field repels cosmic rays from deep space. Solar Cycle 25 has roared to life faster than forecasters expected. What's going on? Ironically, the radiation drop is caused by increasing solar activity. Our latest measurements in July 2022 registered a 6-year low: Latest results (July 2022): Atmospheric radiation is decreasing in 2022. Our monitoring program has been underway without interruption for 7 years, resulting in a unique dataset of in situ atmospheric measurements. 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. SPACE WEATHER BALLOON DATA: Almost once a week, and the students of Earth to Sky Calculus fly space weather balloons to the stratosphere over California. "Lunar Distance." 1 LD = 384,401 km, the distanceīetween Earth and the Moon. Each one comes with a greeting card showing the ornament in flight and extra materials decoding the markings on the disk.Īll sales support hands-on STEM education The students are selling these unique ornaments to support their cosmic ray ballooning program. Having touched the edge of space, it's the closest thing on Earth to an actual Golden Record. The 4-inch aluminum disk is imprinted with instructions intended for extraterrestrials, telling them how to play the phonographs now sailing through interstellar space onboard NASA's Voyager probes. 15th, the students of Earth to Sky Calculus launched it to the stratosphere onboard a cosmic ray research balloon: VOYAGER GOLDEN RECORD ORNAMENT: This is a must-have Christmas ornament for space fans: The Voyager Golden Record. At closest approach to the sun, Venus sometimes transforms itself from a simple crescent into a complete 360-degree annulus-a ghostly ring of light caused by sunlight filtering through the planet's cloudtops. If you do see Venus today, you'll be glad you did. ![]() Suggestion: Read Sky & Telescope's observing tips before attempting any photography. Bright, blinding rays of sunlight can enter your telescope with only a slight accidental nudge of the tripod. "Be careful not to accidentally look at the sun without a solar filter." "Venus was next to the sun in broad daylight," he says. Sebastian Voltmer took the picture from a beach in Sardegna, Italy. Today, Venus is passing almost directly between Earth and the sun-an event astronomers call "inferior conjunction." This is turning the planet into a whisper-thin crescent:ĭr. "I caught in late evening twilight over the Mither Tap, the most prominent summit of the Bennachie range in Aberdeenshire." "Here is one of the brighter meteors from last night's Perseid shower," reports Graeme Whipps from Scotland. Relatively high activity should persist for another 12 to 24 hours: Observing tips. International observers are reporting more than 60 Perseids per hour (ZHR) from dark sky sites-a typical hourly rate for this reliable annual shower. The Perseid meteor shower is peaking now. 28, 2023, as a show of thanks for years of service and hope for future daisies: Until then, we will maintain AIM's iconic "daily daisy," frozen at Feb. ![]() There may be some hope of a recovery as AIM's orbit precesses into full sunlight in 2024. As a result AIM is offline, perhaps permanently. What happened to NASA's AIM spacecraft, which has been monitoring NLCs since 2007? Earlier this year, the spacecraft's battery failed. As the season progresses, these dots will multiply in number and shift in hue from blue to red as the brightness of the clouds intensifies. For the rest of the season, daily maps from NOAA 21 will be presented here:Įach dot is a detected cloud. An instrument onboard NOAA 21 ( OMPS LP) is able to detect NLCs (also known as "polar mesospheric clouds" or PMCs). The first clouds were detected inside the Arctic Circle by the NOAA 21 satellite. The northern season for NLCs began on May 26th. There are no significant equatorial coronal holes on the Earthside of the sun. Switch to: Europe, USA, New Zealand, Antarctica Neutron counts from the University of Oulu's Sodankyla Geophysical Observatory show that cosmic rays reaching Earth are slowly declining-a result of the yin-yang relationship between the solar cycle and cosmic rays. Credit: SDO/HMIĬosmic Rays Solar Cycle 25 is intensifying, and this is reflected in the number of cosmic rays entering Earth's atmosphere. Sunspot AR3395 has a 'beta-delta' magnetic field that harbors energy for strong M-class solar flares. ![]()
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