Space Weather News for July 24, 2025
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EQUATORIAL PLASMA BUBBLES ARE COMING FOR YOUR GPS: Earth’s ionosphere is a bit like Swiss cheese. It contains holes called “equatorial plasma bubbles.” If any of these bubbles drift across your sky–grip the steering wheel–your GPS might go haywire.

That’s exactly what happened during a geomagnetic storm in March 2023. A new study published in the research journal Space Weather recounts how  GPS radio signals began to rapidly flicker, akin to the twinkling of a star, causing positioning errors across a wide swath of the Americas.

GPS satellites transmitting through a bubbly ionosphere. Inset: a simulation of equatorial plasma bubbles. Video.

“This is the most intense event we have analyzed,” says Fabiano Rodrigues, a physics professor at the University of Texas at Dallas and one of the paper’s lead authors. “It produced extremely intense disruptions at low latitudes for more than 10 hours and was even detectable by our mid-latitude sensor in Dallas (UTD in the diagram below), which is unusual.”

Completely surrounding Earth, the ionosphere is a shell of ionized gas created by the sun. Solar ultraviolet radiation ionizes air near the edge of space, creating a dynamic layer of plasma that varies with solar activity, time of day, and latitude. The ionosphere plays a critical role in GPS systems by reflecting or distorting radio waves passing through it.

When the sun sets, the ionosphere becomes unstable. This happens because the sun’s ionizing radiation suddenly disappears. A Rayleigh-Taylor instability takes hold, and bubbles of low-density plasma begin to rise, much like blobs in a lava lamp.

These structures are especially common near the magnetic equator, where electric and magnetic fields enhance the effect. That’s why they’re called equatorial plasma bubbles.

The March 23-24, 2023, event was remarkable because the bubbles were so widespread. They are normally confined within +/- 20  degrees of the magnetic equator, but during this storm, they spread at least twice as far, affecting population centers at middle latitudes. Peak position errors were wider than urban roadways.

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Space Weather News for June 30, 2025
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RARE DOUBLE NAKED-EYE NOVA EVENT: An extremely rare event is underway in the southern hemisphere. Two stars have exploded at the same time, producing simultaneous naked-eye novas (V462 Lupi and V572 Velorum). Full story @ Spaceweather.com.

Above: Eliot Herman photographed V572 Velorum on June 28th using a robotic telescope in Chile.

Here’s finally some good news! Astronomers and sky enthusiasts have been waiting a long time for the Vera Rubin to come on line. The resolution of this camera is such that it can see a golf ball on the moon!  — CPL

First celestial image unveiled from revolutionary telescope

Ione Wells, South America correspondent
Georgina Rannard, Science correspondent

A powerful new telescope in Chile has released its first images, showing off its unprecedented ability to peer into the dark depths of the universe.

In one picture, vast colourful gas and dust clouds swirl in a star-forming region 9,000 light years from Earth.

The Vera C Rubin observatory, home to the world’s most powerful digital camera, promises to transform our understanding of the universe.

If a ninth planet exists in our solar system, scientists say this telescope would find it in its first year.
RubinObs Three large white buildings stand on top of a dry mountain in a desert. One has a domed roof. In the background the sky is blue and looks dry. A yellow crane is in front of the three white buildings which are the Vera Rubin observatory. A dusty road leads up to the buildings.RubinObs
Rubin Observatory and the Rubin Auxiliary Telescope in Cerro Pachón in Chile

It should detect killer asteroids in striking distance of Earth and map the Milky Way. It will also answer crucial questions about dark matter, the mysterious substance that makes up most of our universe.

In a press conference on Monday, the observatory revealed that in 10 hours, the telescope detected 2,104 new asteroids and 7 space objects close to Earth.

All other space and ground surveys combined usually find about 20,000 asteroids in a year.

This once-in-a-generation moment for astronomy is the start of a continuous 10-year filming of the southern night sky.

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