Free Republic

A narrow-band image of the Sun at a wavelength of λ=588.9nm, that of a well known solar sodium line also known as the “NaD line.” The image was acquired during recent first light efforts with the VTF at the Inouye, and shows how precisely the structures within a sunspot are resolved. Each pixel in the original version of the image corresponds to 10 km (or 6.2 miles) on the Sun. (Credit: VTF/KIS/NSF/NSO/AURA) *********************************************************************** In a nutshell * The Daniel K. Inouye Solar Telescope’s new Visible Tunable Filter (VTF) instrument has achieved “first light,” capturing detailed images of sunspots at an...

The sunspot group is now facing Earth. The sunspot group is more than 15 times the diameter of Earth. (Image credit: NASA/SDO and the AIA, EVE, and HMI science teams) A sunspot so large it was seen from the surface of Mars is now facing Earth. The gargantuan sunspot group AR3576 from end to end stretches for more than 124,274 miles (200,000 kilometers) and contains at least four dark cores each larger than Earth, according to Spaceweather.com. It was imaged by NASA's Perseverance Rover from the surface of Mars just last week. The sunspot is so big it can be...

Experts have warned that the dark region, which is cooler than the surrounding area, could release energetic explosions capable of knocking out our planet's power grids. The exact measurements of the sunspot are unknown, but NASA's Perseverance rover snapped images of the spot as it sits more than 152 million miles from the sun. The rover observed the sunspot on August 17 through August 20 while exploring the Jezero Crater on the Red Planet.

Scientists reveal the potential for massive, and potentially destructive, eruptions from the sun. On May 1, 2019, the star next door erupted. In a matter of seconds, Proxima Centauri, the nearest star to our sun, got thousands of times brighter than usual — up to 14,000 times brighter in the ultraviolet range of the spectrum. The radiation burst was strong enough to split any water molecules that might exist on the temperate, Earth-sized planet orbiting that star; repeated blasts of that magnitude might have stripped the planet of any atmosphere. It would be bad news if the Earth’s sun ever...

According to space and weather experts, a recent development regarding the appearance of two new sunspots on the Sun has sparked a wave of concern, with the expectation that a global blackout can be hitting the Earth anytime soon. The National Oceanic and Atmosphere Administration (NOAA) has recently issued a warning about an upcoming solar storm, which can cause major electricity and signal blackouts soon. This comes as two unstable sunspots are visible on the side of the Sun which is facing the earth. According to experts, a solar storm sparked by a massive solar flare explosion on Earth can...

On Tuesday morning, solar activity news website Spaceweather.com reported: "There are two sunspots on the farside of the sun so large they are affecting the way the sun vibrates." The study of the sun's vibrations is known as helioseismology, and it's a key area of solar science. Helioseismology involves studying sound waves from inside the sun, which can give clues as to what's happening on parts of the sun we can't see. It's similar to regular seismology here on Earth, in which scientists can work out what's going on inside our planet by studying sound waves that travel through our...

Yet another series of solar flares(opens in new tab) series shimmied out from the sun on Friday (Aug. 26) after a dazzling show of green-hued auroras(opens in new tab) crashed through the atmosphere just days ago. "Sunspot AR3089 is crackling with a series of intensifying M-class [moderate] solar flares," SpaceWeather.com(opens in new tab) said in a Friday update. NASA's Solar Dynamics Observatory captured an especially powerful flare at 7:16 a.m. EDT (1116 GMT) as populations in Europe and Africa experienced a brief radio blackout. A huge ejection of charged particles from the sun(opens in new tab), known as a coronal...

The sunspot, known as AR3085, has also been shooting off several minor solar flares, though nothing strong enough to be disruptive on Earth. The sunspot, known as AR3085, has also been shooting off several minor solar flares, though nothing strong enough to be disruptive on Earth. Sunspots are regions on the sun where magnetic fields are so intense that some heat is prevented from reaching the sun's surface. As such, sunspots may appear as dark patches. Due to the intense magnetic fields, sunspots are known sources of solar activity. When these magnetic field lines suddenly shift, a vast amount of...

The spot is so big it's changing the way the sun vibrates, according to spaceweather.com. If the dark spot hurls a blob of plasma at Earth, it could disrupt our magnetic field, affecting GPS and communication satellites orbiting close to Earth as well as airplane navigation systems. The National Oceanic and Atmospheric Administration (NOAA) Space Weather Prediction Center issued a forecast for an unsettled geomagnetic field around Earth on Aug. 6 and 7, which could means auroras, though whether it becomes a full-blown solar storm is not yet clear. The telltale vibrational changes showed up in a helioseismic map near...

A massive sunspot has been spotted on our sun that looks directly at Earth The sunspot doubled in size over just a 24-hour period Experts say it could possibly send out medium-class flares in the near future. A dark sunspot that is facing directly toward Earth doubled in size in just a 24-hour period and could possibly send out medium-class flares in the near future. Tony Phillips, the author of SpaceWeather.com, wrote on Wednesday: ‘Yesterday, sunspot AR3038 was big. Today, it's enormous.’ And it is now said to measure three times the size of Earth.

Did you know that Kansas is known as “the Wheat State”? In 2021, it produced nearly one-fourth of all wheat that was harvested in the United States. Needless to say, we really need Kansas to come up big again this year because the war in Ukraine and a number of other factors have combined to bring us to the precipice of an absolutely horrifying global food crisis. Unfortunately, things are not going well in Kansas this year. In fact, wheat crops in much of the state are failing on a massive scale… This time of year, the wheat growing in...

A HUGE sunspot which doubled in size over a 24-hour period is now directly facing Earth, meaning a large solar flare could strike the planet. The sunspot, known as AR3038, doubled in size between Sunday and Monday night. Now, it has turned to face the Earth, sparking concerns that rapid solar winds could pelt towards the Blue Planet. And stunning footage from NASA's Solar Dynamics Observatory on Sunday shows how the huge sunspot has been evolving. Experts at Spaceweather.com explained: "Yesterday, sunspot AR3038 was big. "Today, it's enormous. The fast-growing sunspot has doubled in size in only 24 hours. "AR3038...

The sunspot that has been growing in size recently is known as AR3038. Footage from NASA's Solar Dynamics Observatory on Sunday shows how the sunspot has evolved over the past day or so, twisting and contorting. "Yesterday, sunspot AR3038 was big. Today, it's enormous," reads the SpaceWeather.com website. "The fast-growing sunspot has doubled in size in only 24 hours." The magnetic field associated with the sunspot means it could potentially send an M-class solar flare at Earth—the second-strongest type. However, it is not known whether this will be the case. As of Monday morning the National Oceanic and Atmospheric Administration's...

A sunspot that "awoke from the dead" last week and erupted with a medium-size solar flare, along with a mass ejection of plasma, also lit up the northern skies in glowing lights. One stunning image of the effect showed the aurora seeming to rain through the clouds above Iceland. Rays from this aurora shone near Goðafoss Waterfall, which is about about 45 minutes from Akureyri, the second-largest city in Iceland. The shining northern lights were generated by a moderate-sized solar storm, associated with an explosion of solar particles witnessed by satellites. The sunspot that exploded was poetically dubbed "dead" because...

The explosion comes courtesy of a dead sunspot called AR2987.... The sunspot explosion released loads of energy in the form of radiation, which also led to a coronal mass ejection (CME) — explosive balls of solar material — both of which could spur more intense northern lights in Earth's upper atmosphere. The material in that CME is likely to impact Earth on April 14... The idea of a "dead" sunspot is more poetic than scientific, said Philip Judge, a solar physicist at the High Altitude Observatory at the National Center for Atmospheric Research (NCAR), but the convection of the sun...

A powerful solar storm is set to hit Earth on Thursday (March 31) with spectacular aurora displays accompanying it after the sun fired nearly 20 flares from a single sunspot in just two days. The U.S. National Oceanic and Atmospheric Administration (NOAA) warned that two coronal mass ejections (CMEs), spat out from the overactive sunspot AR2975, on Monday (March 28), are heading toward our planet and might trigger a geomagnetic storm rated as G3 on NOAA's five-point scale.

Just days after the Sun blasted Earth with an M-Class solar flare which created an unexpected G1-Class Geomagnetic Storm, the sun erupted another M-class solar flare towards the Earth earlier today. Today’s flare blasted the Earth with X-rays and UV radiation, triggering a shortwave radio black out over portions of the globe. On Saturday, NOAA forecasters said there was a risk of additional solar flares through today and as predicted, it occured. While Saturday’s solar flare erupted from sunspot Active Region-2911; today’s flare came from Active Regions 2908. In a statement released by NOAA’s Space Weather Prediction Center today, they...

NASA satellites have observed a large sunspot forming on the surface of the Sun. The sunspot is twice as wide as Earth and it is facing away from us, for now. However, as Earth moves around the host star, the sunspot could fire a solar flare right at us. Astronomy site Space Weather said: “A new sunspot is emerging over the sun’s northeastern limb, and it’s a big one. “The sunspot’s primary core is twice as wide as Earth, and it is accompanied by two Moon-sized companion spots – dimensions which make it an easy target for amateur solar telescopes....

Amateur astronomer and Florida resident Howard Eskildsen snapped an image of the "light bridge"—which has a length that's roughly equal to the diameter of Mars—in a recently formed sunspot dubbed AR2770, spaceweather.com reported. These phenomena are caused by strong magnetic field concentrations, which inhibit convection—the transfer of heat from one place to another within gases and liquids. This process heats the solar surface. Hot "bubbles" of plasma—charged particles that are one of the four fundamental states of matter—are transported from deeper, hotter layers to the surface, whereas cooler plasma is transported back to the interior... According to Felipe, light bridges...

A massive sunspot on the Sun is turning towards our planet and this could result in strong solar flares. The sunspot AR2770 was detected earlier this week and is expected to grow in size in the upcoming days. A report by SpaceWeather.com - a space weather forecasting website - said that multiple minor flares have been emitted by the sunspot already as it faced towards the earth. These flares have caused "minor waves of ionization to ripple through Earth's upper atmosphere" but nothing major yet. A clear picture of the AR2770 has also surfaced that gives a better idea into...