Astronomers Map Most Extended Galaxy

🌌 Imaging the largest known galaxy

🤖 First AI-driven telescope goes live

⭐ Metal-rich white dwarfs discovered

🚀 NASA opens flight dynamics facility

🌙 SpaceX rocket headed for the moon

Astronomers using ultra-deep imaging techniques investigated the most spatially extended galaxy ever identified, probing its faint outer regions to understand its unusual structural properties and formation history.

The team's observations revealed extremely low surface brightness features extending far beyond typical galactic boundaries, requiring specialized image processing to detect structures previously hidden in observational noise levels.

According to the researchers, understanding such extreme galaxies challenges existing models of galaxy formation and provides crucial insights into how dark matter halos influence stellar distribution at cosmic scales.

Northwestern University, University of Chicago, and Fermilab scientists developed an autonomous scheduling system through the NSF (National Science Foundation)-Simons Foundation AI Institute for the Sky, training it on historical telescope observations.

The deep-learning system controlled the 570-megapixel Dark Energy Camera mounted on the Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory in Chile, adapting observations in real time.

Per co-lead Alex Drlica-Wagner, the system currently matches human scheduling performance, with plans to exceed it as next-generation facilities like Vera C. Rubin Observatory demand intelligent automation.

Researchers using the DESI (Dark Energy Spectroscopic Instrument) survey identified twelve white dwarf stars showing spectroscopic signatures of heavy element pollution from accreted rocky planetary material in their atmospheres.

The DESI spectrograph detected calcium and magnesium absorption lines in these stellar atmospheres, indicating ongoing accretion of debris from disrupted asteroids or planetary bodies orbiting the dead stars.

According to the research team, polluted white dwarfs provide unique windows into exoplanetary compositions, revealing the chemical makeup of rocky worlds that once orbited these now-extinct stellar systems.

NASA opened the Flight Dynamics Research Facility at Langley Research Center in Hampton, Virginia, marking the agency's first major new wind tunnel construction in over forty years.

The 25,000-square-foot facility features a 20-foot diameter test chamber powered by four 750-horsepower motors driving carbon fiber fan blades, achieving top airspeeds of 117 miles per hour.

According to NASA Administrator Jared Isaacman, the facility will support Artemis lunar vehicle testing, X-plane development, and Mars aircraft design, ensuring continued American aerospace leadership for decades ahead.

Space tracking expert Bill Gray predicted a discarded SpaceX upper stage will unintentionally strike the Moon near Einstein Crater, following its January 2025 launch of Firefly's Blue Ghost and ispace lunar landers.

The 40-foot rocket segment weighing approximately 10,000 pounds will impact at 5,400 mph, creating a crater nearly 90 feet across and 16 feet deep according to Los Alamos calculations.

According to retired astrophysicist Jonathan McDowell, while this impact poses no immediate threat, future lunar bases will require improved debris monitoring to prevent similar chaotic orbit collisions.