🚀 Fascinating Frontiers - Space & Astronomy News
| Astronomers are pushing back against a plan to launch mirrors that would brighten the night sky from orbit. |
- Astronomers Question Space Mirror Plan — Science News
Astronomers including Jonathan McDowell are skeptical of ReflectOrbital's plan to launch satellites that would reflect sunlight and brighten the night sky. The proposal would destroy the natural darkness of the night for observers on the ground. Concerns center on increased light pollution from orbit and interference with astronomical observations. The Science News article outlines the technical and environmental objections raised by the community. McDowell and colleagues highlight how the satellites would alter the visibility of stars for both professional and amateur observers. Ground-based telescopes would face new challenges in calibration and data collection as a result. Source: sciencenews.org - ESA Opens ESTEC Facility to Journalists — European Space Agency
Journalists are invited to the ESTEC Open Day in Noordwijk, Netherlands on September twenty seven. Attendees can meet ESA experts and astronauts while exploring technology behind European space missions. Accreditation closes on September twenty two at seventeen hundred CEST. The event offers a behind-the-scenes look at ongoing projects. Visitors will gain access to facilities normally restricted to mission teams. The open day is designed to showcase hardware and software used in current ESA programs. Source: x.com - ESA Awards Earth Observation Contracts — European Space Agency
Contracts were awarded to ICEYE and LDO Space to study options for the future Earth Observation Governmental Service. The studies will examine satellites, ground infrastructure, data processing, and user delivery. Work falls under ESA’s ERS-EO programme and supports security, preparedness, and crisis response capabilities. The two companies will deliver separate analyses of full system architectures. Results are expected to guide future procurement decisions within the programme. This marks the start of detailed planning for a dedicated governmental observation service. Source: x.com - NASA Awards SpaceX Additional Crew Missions — Teslarati
NASA awarded SpaceX a nine hundred forty six million dollar contract for three more astronaut missions through twenty thirty. The deal brings the total station contract value to five point nine billion dollars. SpaceX will continue flying Crew Dragon vehicles while Boeing’s Starliner remains grounded. The additional flights ensure continued crew rotation capability to the International Space Station. NASA selected SpaceX after reviewing technical and schedule performance data from prior missions. The contract covers launch services, vehicle processing, and mission operations. Source: teslarati.com - China Offers Seven Hundred Sixty Thousand Dollar Space Trip — VnExpress International
China’s largest online travel agency is offering a seven hundred sixty thousand dollar trip to space. The package targets wealthy customers seeking orbital experiences. Details on the operator and timeline remain limited in the announcement. The offering reflects growing commercial interest in human spaceflight within China. Potential travelers would experience several days in orbit aboard a yet-to-be-named vehicle. Pricing places the trip among the most expensive private space experiences currently advertised. Source: e.vnexpress.net - BepiColombo Measures Mercury Particle Bombardment — Universe Today
BepiColombo recorded particle bombardment at Mercury during a close flyby. The measurements will help assess how space storms affect Mercury’s surface and Earth’s atmosphere. Data come from instruments aboard the joint ESA-JAXA mission. The spacecraft passed through regions where solar wind interacts directly with the planet’s exosphere. Scientists will compare these readings with models of surface sputtering and atmospheric loss. Similar processes occur at Earth but on a different scale due to Mercury’s lack of a global magnetic field. Source: universetoday.com - Curiosity Rover Creates Five New Mars Craters — ScienceAlert
NASA’s Curiosity rover created five new impact craters on Mars during drilling operations. The craters revealed unexpected subsurface materials that surprised the science team. Analysis of the exposed layers is ongoing. The drill holes reached depths sufficient to expose material not previously sampled by the rover. Team members are examining mineral compositions that differ from surface regolith. The findings may revise understanding of how the Martian crust formed and evolved. Source: sciencealert.com - XRISM Observatory Captures Stellar Wind — NASA
The NASA-JAXA XRISM mission directly observed a giant star’s stellar wind being captured by its compact companion. The captured material powers strong X-ray flares from the system. The observation provides new insight into accretion processes around compact objects. XRISM’s high-resolution spectrometer isolated the velocity structure of the inflowing gas. The data show how the wind is funneled toward the compact object before releasing energy as X-rays. This marks one of the clearest views yet of wind capture in a high-mass X-ray binary. Source: science.nasa.gov - Europe’s New Spacesuit Needs Further Development — Space.com
French ISS astronaut Thomas Pesquet stated that Europe’s new spacesuit still requires significant work. He described the project as being at the very beginning of its journey. The comments highlight ongoing technical challenges in the development program. Pesquet spoke from direct experience with current suit systems during multiple station expeditions. Engineers must address mobility, thermal control, and life-support integration before flight hardware can be finalized. The timeline for operational use remains under review by ESA. Source: space.com - Planets May Scatter in Warm Jupiter Systems — AAS Nova
New models suggest planets in warm Jupiter systems can scatter one another during formation. The scattering process alters orbital architectures over time. Simulations show how initial disk conditions influence final planet positions. The work focuses on systems where giant planets orbit closer to their stars than Jupiter does to the Sun. Scattering events can eject smaller bodies or shift orbits into resonant configurations. The models incorporate both gas-disk interactions and gravitational encounters between planets. Source: aasnova.org - ISS Crew Prepares for Cargo Arrival — NASA Science
Expedition seventy five completed lead-free soldering experiments and lunar landing simulations this week. The crew also prepared for an upcoming cargo mission arrival. Housekeeping and exercise routines continued alongside the research activities. The soldering work tested techniques for future spacecraft repairs in microgravity. Lunar simulations used virtual-reality tools to rehearse landing procedures. Cargo preparations include inventory checks and berthing mechanism tests ahead of the vehicle’s arrival. Source: nasa.gov - Time Running Out to Observe Strange Exoplanet Orbit — EurekAlert
Astronomers warn that the window to observe a giant planet’s unusual orbit is closing rapidly. The planet’s path deviates from standard formation expectations. Follow-up observations are needed before the geometry changes. The orbit shows signs of past dynamical interactions that may have altered its inclination and eccentricity. Current telescope schedules are being adjusted to capture the remaining favorable viewing periods. Without new data the system’s formation history may remain poorly constrained. Source: eurekalert.org - Roman Space Telescope Detects First Starlight — Mashable
NASA’s Nancy Grace Roman Space Telescope has captured its first starlight during testing. The milestone confirms the telescope’s optical system is functioning as designed. Further calibration steps remain before science operations begin. Light from a single star passed through the full optical chain and reached the detectors. Engineers are now using the data to verify focus and throughput across the wide-field instrument. The telescope is scheduled for additional alignment checks in the coming months. Source: mashable.com - Space Shuttle Enterprise Anniversary Honored — SCV News
A congressional resolution marks the fiftieth anniversary of the Space Shuttle Enterprise rollout. The event recognizes the test vehicle’s role in the shuttle program’s early development. Public events are planned at the space history museum. Enterprise performed the first approach and landing tests that validated the orbiter design. The resolution highlights contributions from engineers and pilots who prepared the vehicle for flight. Museum exhibits will feature artifacts from the original test campaign. Source: scvnews.com - Mars Shows Purple Regions in New Images — Universe Today
Mars Express images reveal purple areas on the Red Planet under certain lighting conditions. The coloration results from different surface materials and illumination angles rather than uniform iron oxides. The High-Resolution Stereo Camera captured the variations. The purple hues appear when sunlight strikes regions with specific mineral mixtures at low angles. These observations add detail to existing maps of surface composition. The camera continues to return high-resolution stereo pairs for ongoing geological analysis. Source: universetoday.com
Cosmic Spotlight
The Roman Space Telescope’s first starlight detection marks a quiet but critical engineering checkpoint. Light from a single star passed through the full optical chain and reached the detectors, confirming alignment after years of assembly and testing. This step precedes the more demanding wide-field surveys the mission will conduct once fully commissioned. Engineers will now use the data to fine-tune focus and throughput before moving to the next calibration phase. The telescope’s eventual infrared surveys are expected to complement existing facilities by mapping large sky areas in ways current instruments cannot match.
Cosmic Deep Dive: How Light Travels Across the Universe
Light from the most distant galaxies we can see has been traveling for over thirteen billion years, a span that would take a commercial jet roughly one hundred fifty million years to cross at typical cruising speed. That same photon left its source when the universe was only a few hundred million years old and has been stretched by cosmic expansion into the infrared wavelengths our telescopes now detect. Along the way it passed through regions where neutral hydrogen absorbed certain colors, creating the absorption lines we use to map the early intergalactic medium. We can measure the exact stretch factor by comparing the observed wavelength to the wavelength the light had when it was emitted, giving us a direct record of how much the universe has grown since then. Yet we still cannot explain why the expansion rate measured from these ancient photons differs slightly from the rate measured in the nearby universe using supernovae and Cepheids. The mismatch leaves open the question of whether an unknown form of energy or a revision to our understanding of gravity is required to reconcile the two measurements.
That's it for today's space and astronomy developments. |
