First Orbital Rocket Launch from European Soil Delayed Due to Winds
The first attempt to launch an orbital rocket from European soil has been postponed due to high winds. Isar Aerospace, a Germany-based private space company, had planned to launch its Spectrum rocket from Andøya Spaceport in Norway on March 24. The three-hour launch window was set between 7:30 a.m. EST and 10:30 a.m. EDT. Strong winds at the launch site, however, led to the cancellation of the attempt. No damage or technical issues were reported with the rocket or the launch infrastructure. The company has stated that a new launch window is being determined in coordination with the spaceport.
Mission Details and Technical Aspects
According to reports, Spectrum is a two-stage launch vehicle developed entirely by Isar Aerospace. Standing 28 metres tall, the rocket is designed to carry payloads of up to 1,000 kilograms into low-Earth orbit. Its main stage is powered by nine turbopump liquid oxygen/propane engines, while a single Aquila engine is used for orbital manoeuvres. The launch site at Andøya Spaceport, which was built specifically to support Spectrum, has been operational since 2023. The maiden flight does not include customer payloads, as the company aims to collect flight data for future missions.
Commercial Contracts and Future Plans
Isar Aerospace has secured a contract with the Norwegian Space Agency for the launch of Arctic Ocean Surveillance satellites by 2028. Christian Hauglie-Hanssen, Director General of the Norwegian Space Agency, stated in an official release that the upcoming launches would be a significant step for Norwegian space initiatives. Despite the current delay, the company remains focused on achieving key mission milestones. A revised launch schedule is expected to be announced soon.
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A stunning solar eruption captured on video on the night of May 12-13 has revealed a 600,000-mile-long filament blasting away from the sun’s northern hemisphere. The outburst occurred around 8 p.m. EDT (0000 GMT) and spanned a distance more than twice that between Earth and the moon. A massive solar filament suspended above the sun’s surface became unstable and erupted, blasting a CME into space along with a cloud of plasma and magnetic energy. Preliminary models show Earth is nowhere in the firing range of this fiery ejection, but researchers are still watching the phenomenon closely.
Sun’s 600,000-Mile-Long ‘Angel-Wing’ Eruption Stuns Skywatchers, Signals Rising Solar Activity
As per the Space.com report, the eruption originated from a filament structure composed of dense, cooler solar plasma held aloft by magnetic fields. These structures often appear as dark ribbons across the sun’s disk and can become unstable without warning. Solar observers noted that this latest eruption dwarfed similar recent events, both in scale and intensity. Aurora chaser Jure Atanackov remarked that the CME from the blast was among the most spectacular seen this year, although fortunately, it is headed north and will miss Earth.
The event, dubbed the “angel-wing” or “bird-wing” eruption by observers online, was widely shared among solar watchers. Vincent Ledvina, another aurora chaser, noted its incredible visual impact, describing it as a sight worth watching on loop. The eruption is, in fact, so long, by more than a million kilometres, that it is of scientific interest and visually striking as well. Geomagnetic storms resulting from this kind of CME can affect satellites, communication systems, and even Earth.
Although it foreshadows the unpredictable nature of our host star, this particular CME does not pose a threat to Earth at the moment. Solar activity is ramping up as we approach the peak of Solar Cycle 25 in 2025. What’s more, more — and maybe more Earth-threatening — solar explosions could follow.
As a reminder of the formidable and delicate forces at play relatively close by on Earth, the sun remains a source of wonder for astronomers and skywatchers alike.
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Over 80 years, dark matter has been a great mystery for the researchers. Elusive of direct observation, it has made its existence known only by the gravitational impacts it makes on cosmic structures. Even though there is a lot of indirect evidence of its existence, the real nature of dark matter is still unknown. An important attribute of its particle is mass. While past studies have constrained the mass of fermionic dark matter using quantum principles like Pauli’s exclusion principle, bosonic dark matter remained less constrained. In a recent study, scientists have estimated a new lower bound on the mass of ultra-lightweight bosonic dark matter particles.
About the study
According to the study published in Physical Review Letters, the mass of ultralight bosonic dark matter must be more than 2 × 10-21 electron volts (eV), 100 times more than previous estimates using Heisenberg’s uncertainty principle.
The team of researchers, led by the first author of the study, Tim Zimmermann, a Ph.D. candidate at the Institute of Theoretical Astrophysics, University of Oslo, focused their method on the data of Leo II, the Milky Way’s satellite galaxy. It is a dwarf galaxy 1,000 times smaller than the Milky Way. By analyzing the internal motions of stars within Leo II—heavily influenced by dark matter—the team derived 5,000 possible dark matter density profiles using a tool called GRAVSPHERE.
They compared these with profiles generated by quantum wave functions of various dark matter particle masses. If the particle is too light, quantum fuzziness spreads it too thinly, preventing it from forming the observed structures. The study concluded that the dark matter particle must have a mass greater than 2.2 × 10⁻²¹ electron volts (eV)—over 100 times more than previous lower estimates.
Impact on dark matter studies
The findings have significant implications for popular ultralight dark matter models, particularly fuzzy dark matter, which typically proposes particles with masses around 10-22 ev.
Looking ahead, the team plans to extend their methodology to mixed dark matter scenarios, where dark matter is composed of particles with different masses.
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