astronomy
A Bizarre Repeating Radio Signal from Space Perplexes Astronomers
Mysterious radio signal from space defies explanation, cycling through three states every hour. Aliens not likely, scientists suggest neutron star or white dwarf.
Our vast universe never ceases to amaze, and astronomers have recently stumbled upon yet another cosmic enigma. An article published on the website “New Atlas” discusses the discovery of a peculiar radio signal that repeats every hour, oscillating between three distinct states. This signal, officially designated ASKAP J1935+2148, defies current scientific explanations, offering a tantalizing mystery that has captured the attention of researchers worldwide.
The Elusive Signal:
The radio signal was initially detected by the ASKAP radio telescope in Australia as part of its mission to monitor transient pulses across the sky. What makes ASKAP J1935+2148 particularly intriguing is its cyclical nature, displaying three different emission states. At times, it emits brilliant flashes lasting 10 to 50 seconds, characterized by radio waves pointing in the same direction (linear polarization). Alternatively, the pulses become weaker, lasting only 370 milliseconds, and exhibit circular polarization. On occasion, the signal remains silent, missing its customary cue.
Unraveling the Mystery:
Lead author of the study, Dr. Manisha Caleb, shared her fascination with the signal’s distinct states, remarking, “What is intriguing is how this object displays three distinct emission states, each with properties entirely dissimilar from the others.” The MeerKAT radio telescope in South Africa played a vital role in discerning these unique characteristics. If the emissions did not originate from the same point in the sky, the link between these different signals would be less apparent.
Non-Alien Origins:
Although scenarios involving extraterrestrial life often capture our imagination, the scientists behind this discovery assure us that aliens are an unlikely explanation (probably). Instead, the most plausible hypothesis suggests that the signal originates from either a neutron star or a white dwarf. However, neither of these explanations fits perfectly within our current understanding of the physics governing these cosmic entities.
Neutron Stars and White Dwarfs:
Neutron stars, known for their regular emission of radio waves, are strong candidates to account for this unusual signal. The interplay between their powerful magnetic fields and complex plasma flows might justify the signal’s diversity. However, the significant stumbling block lies in the spin rate. Neutron stars typically rotate at speeds of seconds or fractions of a second per revolution, making it seemingly impossible for one to rotate as slowly as once every 54 minutes. While white dwarfs could potentially explain the slow rotation, the team admits that they lack knowledge of any mechanism capable of generating the observed radio signals.
Challenging Our Understanding:
The enigmatic nature of this repeating radio signal beckons further observation and analysis. Caleb postulates that the findings may prompt astronomers to reevaluate their long-held scientific knowledge surrounding neutron stars and white dwarfs, as well as their radio wave emissions and prevalence within the Milky Way galaxy. This discovery compounds the mystery, further testing existing theories and pushing scientific boundaries.
As humanity continues to unravel the secrets of the universe, discoveries like the repeating radio signal designated ASKAP J1935+2148 remind us of the vastness and complexity of cosmic phenomena. While the source of this signal remains unknown, speculation surrounding neutron stars, white dwarfs, and even unconventional possibilities, adds excitement to the scientific pursuit of knowledge. As astronomers eagerly await additional observations and investigations, the hope is that this cosmic riddle will ultimately shed new light on our understanding of the cosmos and its diverse wonders.
Sources:
- University of Sydney: https://www.sydney.edu.au/news-opinion/news/2024/06/05/slow-spinning-radio-neutron-star-breaks-all-the-rules.html
- The Conversation: https://theconversation.com/a-strange-intermittent-radio-signal-from-space-has-astronomers-puzzled-231385
- New Atlas: https://newatlas.com/space/radio-signal-space-repeats-hour-neutron-star-white-dwarf/
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Author
Science
Seeing an eclipse from Earth is awe‑inspiring – for astronauts seeing one from space, the scene was even more grand
Discover the stunning eclipse seen by Artemis II astronauts during their 2026 Moon mission. A truly extraordinary spectacle awaits.
Deana L. Weibel, Grand Valley State University
The astronauts on Artemis II’s trip to the Moon in April 2026 didn’t just have an amazing journey through space. They also saw something extraordinary. They were the first humans to see a total solar eclipse from space.
A solar eclipse happens when the Moon moves in front of the Sun. In a total eclipse, the Sun’s central disc is covered completely.
From Earth, the circle of the Sun is about the same size as the circle of the Moon. With the bright circle blocked, you can see the undulating rays of the Sun’s corona, or outer atmosphere, that are normally too dim to be observed.
I’m a cultural anthropologist who studies awe-inspiring aspects of space exploration. I have been lucky enough to have seen two total solar eclipses. The first one was in Nebraska in 2017, the second in Indiana in 2024.
During my second total eclipse, the period of totality – that short span when you can remove your protective glasses and look directly at the eclipse – lasted close to 4 minutes. I saw waves of diffuse light snaking around an ink-black hole in the sky. It looked very wrong – almost alien.
On Aug. 12, 2026, there will be another total solar eclipse, visible only from Greenland, Iceland, Spain and the Balearic Islands of the Mediterranean. Some fortunate viewers in Spain and nearby islands may see the eclipse just before sunset, low on the horizon. The Moon illusion, a phenomenon where the Moon looks bigger when it’s near the horizon, might make this eclipse look unusually large.
Unusual eclipse perspectives
Astronauts will occasionally also have less common eclipse experiences. I interviewed one I call by the pseudonym “Jackie” in my research about astronauts’ experiences of awe. She was part of an astronaut training group that did a flight exercise during a total solar eclipse.
Jackie and her squad flew their jets in the shadow of the Moon. This lengthened their time in totality because they could follow and stay within the shadow. Jackie was most impressed with how the Sun’s corona seemed to shift and ripple.
“It’s not static … it’s alive,” she told me.
On April 6, 2026, the astronauts of NASA’s Artemis II mission saw another kind of unusual eclipse as they flew around the Moon. At one point during their flight, the Moon and the spacecraft aligned so that the Moon was directly between them and the Sun, blocking the Sun’s disk in a way that looks very different from what we see on Earth.
Astronaut Victor Glover said it felt like they “just went sci-fi.” https://www.youtube.com/embed/YLjPci5bo1k?wmode=transparent&start=0 ‘An impressive sight’: The Artemis II crew were the first humans to observe a solar eclipse from near the Moon.
The astronauts were so close to the Moon that the Moon looked bigger than the Sun and hid more of its bright circle. Earth was also in view, and sunlight reflected from the Earth onto the Moon in a phenomenon NASA calls “earthshine.” This dim light is very similar to the moonlight that shines on the Earth at night.
Imagine the Sun hidden behind the Moon, creating a hazy halo around the Moon’s edges. At the same time, faint light reflected from Earth softly illuminates the Moon, revealing mountains and craters in a dim twilight. Now imagine this striking scene lasting 54 minutes.
This sight was, without a doubt, one of the most unusual eclipses ever seen by human eyes.
Although Artemis’ astronauts are trained to think scientifically, this experience propelled them into a state of awe. They talked openly about how their brains were “not processing” what they observed. While NASA kept them busy with a variety of tasks, the sound of emotion and excitement in their voices as they broadcast live from their lunar flyby was unmistakable.
The psychology of awe
Researchers have studied the effects of awe on the human brain, including awe felt during solar eclipses. Moments of wonder like these can transform how you feel and even how you think, making you more thoughtful and open-minded.
In my own work I’ve found these experiences can change how astronauts understand their own place in the universe.
One astronaut said she gained an awareness of the fragility of our planet that now shapes everything she does, while another described becoming more curious after returning to Earth. A third said the awe he experienced in lunar orbit changed his understanding of time and infinity.
Space travel creates many opportunities for awe, but a solar eclipse from behind the Moon, as Mission Commander Reid Wiseman put it, required “20 new superlatives.”
It’s an experience most of the earthbound eclipse-chasers heading to Greenland or Iceland or Spain this summer will only dream about. Whether eclipses happen in space or on Earth, though, close encounters with the grandeur of our universe can make you feel profoundly human.
Deana L. Weibel, Professor of Anthropology, Grand Valley State University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Science
After the Blood Moon: Scientists and Skywatchers React to the March 3, 2026 Total Lunar Eclipse
The March 3, 2026 total lunar eclipse amazed skywatchers worldwide. Scientists and amateur astronomers share reactions and photos from the dramatic blood moon event.
Last Updated on March 5, 2026 by Daily News Staff
Millions of people around the world looked to the sky in the early hours of March 3, 2026 to witness one of the most striking astronomical events of the year — a total lunar eclipse, often referred to as a “Blood Moon.” As the Moon passed completely into Earth’s shadow, it transformed from its familiar silver glow into a deep copper-red color, captivating observers from North America to Asia and across the Pacific.
Blood Moon Aftermath: Scientists and Skywatchers React to the March 3, 2026 Total Lunar Eclipse
For viewers in the western United States, including Arizona and California, the eclipse occurred just before sunrise. The timing created a dramatic scene as the reddish Moon hovered low in the western sky while the eastern horizon began to brighten with dawn.
A Global Skywatching Event
Total lunar eclipses occur when the Sun, Earth, and Moon align so that Earth’s shadow completely covers the Moon. During the March 3 event, the Moon spent nearly an hour fully inside the darkest part of Earth’s shadow, known as the umbra. During this phase, sunlight filtered through Earth’s atmosphere projected reddish light onto the Moon’s surface, creating the dramatic “blood moon” effect.
Astronomers noted that the event was particularly significant because total lunar eclipses are relatively infrequent. While partial eclipses occur more often, a full eclipse visible across large portions of the globe remains a memorable experience for both scientists and casual observers.
Scientists Explain the Phenomenon
According to researchers at NASA, the reddish color seen during totality occurs because Earth’s atmosphere scatters shorter wavelengths of sunlight — such as blue — while allowing longer red wavelengths to pass through. This filtered light is then bent, or refracted, into Earth’s shadow and projected onto the Moon.
Planetary scientists say lunar eclipses provide a powerful visual demonstration of the geometry of the Earth–Moon–Sun system. The curved shadow moving across the Moon also historically served as one of the earliest pieces of evidence that Earth is spherical.
Researchers also point out that lunar eclipses offer opportunities to study Earth’s atmosphere. Variations in dust, volcanic particles, and atmospheric conditions can influence how dark or red the Moon appears during totality.
Amateur Astronomers Share Their Views
While professional observatories monitored the eclipse with precision instruments, amateur astronomers and astrophotographers helped document the event from countless locations worldwide. Social media platforms and astronomy forums quickly filled with images showing the Moon’s color shifting from pale gray to orange and deep red.
Many skywatchers in the southwestern United States described the experience as particularly dramatic because the eclipse occurred just before moonset. Observers reported seeing the Moon glowing red above desert landscapes and city skylines before gradually fading into the brightening morning sky.
Astrophotographers also emphasized that lunar eclipses are among the easiest astronomical events to capture. Unlike solar eclipses, they can be photographed safely without special filters, making them accessible to beginners using smartphones as well as professionals using telescopes and high-end cameras.
A Rare Pre-Dawn Sight
In parts of the western United States, some observers were able to witness a rare atmospheric phenomenon known as a selenelion, when both the eclipsed Moon and the rising Sun appear in the sky at the same time due to atmospheric refraction. The effect added an unusual visual element to an already impressive celestial event.
The combination of a deep red Moon and the approaching dawn created striking photographic opportunities and memorable moments for early-morning skywatchers.
When Is the Next Total Lunar Eclipse?
Although partial eclipses occur periodically, the next widely visible total lunar eclipse will not occur until late 2028. That makes the March 2026 eclipse one of the most notable skywatching events of the decade.
For many observers, the event served as a reminder that some of the most spectacular astronomical experiences require nothing more than stepping outside, looking up, and taking a moment to appreciate the universe above.
References and Further Reading
- NASA – Lunar Eclipse Science Overview
- Time and Date – March 3, 2026 Total Lunar Eclipse Details
- Sky & Telescope – Astronomy News and Observing Guides
- Space.com – Guide to Lunar Eclipses
- STM Daily News – Science Coverage
Author
Last Updated on March 2, 2026 by Daily News Staff
Early risers in Arizona are in for a celestial show.
On Tuesday, March 3, 2026, a total lunar eclipse will be visible across much of North America — including Phoenixand the Valley. During this event, the Moon will pass completely into Earth’s shadow, turning a deep copper-red color often called a “Blood Moon.”
Here’s what you need to know.
🌍 What Is a Total Lunar Eclipse?
A total lunar eclipse happens when the Sun, Earth, and Moon align perfectly, with Earth positioned directly between the Sun and the Moon. As the Moon moves into Earth’s darkest shadow (the umbra), it doesn’t disappear — instead, it glows red.
That reddish color comes from sunlight filtering through Earth’s atmosphere — essentially, we’re seeing all the world’s sunrises and sunsets projected onto the Moon at once.
🕒 Phoenix Viewing Times (MST)
Arizona does not observe Daylight Saving Time in March, so these times are in Mountain Standard Time (MST).
- 1:44 a.m. – Penumbral eclipse begins (subtle dimming begins)
- 2:50 a.m. – Partial eclipse begins (Earth’s shadow becomes clearly visible)
- 4:04 a.m. – Totality begins 🌕
- 4:34 a.m. – Greatest eclipse
- 5:03 a.m. – Totality ends
- 6:18 a.m. – Partial eclipse ends
- 7:20 a.m. – Penumbral eclipse ends
The most dramatic portion — totality — lasts nearly one hour.
🌅 Where to Look in Phoenix
The eclipse happens in the pre-dawn hours, so the Moon will be low in the western sky as it sets.
For the best view:
- Find a location with a clear western horizon
- Avoid city light glare if possible
- Consider desert viewpoints, parks, or elevated areas around the Valley
Because the Moon will be setting as the Sun begins to rise, the backdrop of early morning twilight could make for stunning photography.
🔭 Do You Need Special Equipment?
No.
Unlike a solar eclipse, lunar eclipses are completely safe to view with the naked eye. However:
- Binoculars enhance color detail
- A small telescope reveals subtle shadow gradients
- A tripod and DSLR or smartphone with night mode can capture impressive images
🌎 Why This Eclipse Matters
This will be one of the most accessible celestial events of 2026 for Arizona residents. Total lunar eclipses don’t happen every year in the same location, and the timing — just before sunrise — adds dramatic visual contrast.
If skies are clear, Phoenix could have a spectacular view.
📌 Quick Viewing Reminder for Phoenix
Set your alarm for around 3:45 a.m.
Step outside by 4:00 a.m.
Look west
Watch the Moon turn red
No tickets. No crowds. Just the sky putting on a show.
For more science, space, and Arizona skywatching coverage, visit STM Daily News.
Related Coverage
- NASA: What Is a Lunar Eclipse?
- Time and Date: March 3, 2026 Total Lunar Eclipse Details
- Sky & Telescope: How to Watch the March 2026 Lunar Eclipse
- Space.com: Where and When to See the 2026 Blood Moon
- STM Daily News – Science & Space Coverage
