Sun’s activity is ramping up with more solar flares expected

The sun has been particularly active recently, and this weekend the Earth experienced the effects of a solar storm. The sun recently unleashed a coronal mass ejection (CME) on July 21 that has been traveling through the solar system and created a minor geomagnetic storm as it arrived at Earth.

The Solar Ultraviolet Imager (#SUVI) aboard @NOAA's #GOES16? saw a stormy Sun on July 21! You can see a #CoronalMassEjection just above the middle of the Sun near the end of this animation (arrow). @NWSSWPC says a G2 (moderate) geomagnetic storm is likely on July 23. pic.twitter.com/bOTt88kg6k

— NOAA Satellites – Public Affairs (@NOAASatellitePA) July 22, 2022

This kind of solar activity is unlikely to affect most people’s everyday lives, but it can affect satellites and make auroras visible in further parts of the globe than is typical. These kinds of solar events are likely to become more frequent in the coming months, according to the National Oceanic and Atmospheric Administration (NOAA) due to the sun’s cycle of activity.

G1 (Minor) geomagnetic storming was observed at 23/0359 UTC. A G1 warning is in effect until 23/1800 UTC. pic.twitter.com/93MxPUoTHS

— NOAA Space Weather (@NWSSWPC) July 23, 2022

“The sun’s 11-year activity cycle is ramping back up, meaning phenomena such as CMEs and solar flares are increasing in frequency,” NOAA writes. “Depending on the size and the trajectory of solar eruptions, the possible effects to near-Earth space and Earth’s magnetosphere can cause geomagnetic storms, which can disrupt power utilities and communication and navigation systems. These storms may also cause radiation damage to orbiting satellites and the International Space Station.” We do now have a new instrument for observing such outbursts, in the form of NOAA’s GOES-18 satellite.

Launched by NASA in March this year, this weather observation satellite has already sent back stunning views of our planet taken using its Advanced Baseline Imager instrument. But it also has other instruments on board for observing the sun, including an X-ray and extreme-ultraviolet (EUV) camera. This camera can observe the extremely high temperatures of the sun’s corona to see events like CMEs and solar flares.

First images of the sun captured by GOES-18's SUVI Instrument on July 10, 2022, showing a coronal mass ejection at six different wavelengths.First images of the sun captured by GOES-18’s SUVI Instrument on July 10, 2022, showing a coronal mass ejection at different wavelengths. NOAA

NOAA recently shared the first images from GOES-18’s Solar Ultraviolet Imager instrument, or SUVI, showing the sun in various extreme ultraviolet channels during a similar coronal mass ejection on July 10.

You can see the CME most clearly in the bottom right image, and if you head to NOAA’s website you can see video of the event as well.

GOES-18 is currently undergoing post-launch testing, including checking its instruments before they begin full operations.

The satellite is expected to be ready for its operational role in early 2023.

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