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Politecnico di Milano and Georgia Tech unveil new scenarios for asteroid deflection

Researchers from Politecnico di Milano and Georgia Tech analyzed NASA's DART mission to asteroid Dimorphos, revealing a viable mechanism for ejecta evolution and understanding the impact of an asteroid's shape on deflection. The studies suggest that sending multiple smaller impactors can increase the asteroid push while reducing costs.

SourcePolitecnico di Milano·JournalNature Communications·TypeObservational study·DateFeb 20, 2025

Panorama of our nearest galactic neighbor unveils hundreds of millions of stars

The Hubble Space Telescope has captured a panoramic view of the Andromeda Galaxy, unveiling hundreds of millions of stars and providing new clues to its evolutionary history. The galaxy's unique structural features, such as coherent streams of stars, suggest a more active recent star formation and interaction history than the Milky Way.

SourceUniversity of Washington·JournalThe Astrophysical Journal·TypeObservational study·DateJan 17, 2025

A Sustainable Development Goal for space?

Experts propose an 18th SDG to protect Earth's orbit from accumulating debris, citing the need for global consensus and mechanisms for enforcement. The proposal builds on earlier calls for a legally-binding treaty to safeguard the planet's orbital environment.

SourceUniversity of Plymouth·JournalOne Earth·TypeSystematic review·DateJan 9, 2025

James Webb space telescope offers best glimpse ever into the icy planetesimals of the early solar system

Researchers at the University of Central Florida used the James Webb Space Telescope to analyze trans-Neptunian objects, revealing a clearer picture of how the outer solar system formed and evolved. The study found three distinct compositional groups among TNOs, shaped by ice retention lines that existed in the era when the solar syste...

SourceUniversity of Central Florida·JournalNature Astronomy·TypeObservational study·DateDec 19, 2024

Superflares once per century

A new study reveals that sun-like stars experience superflares approximately once per century, releasing massive amounts of energy in short periods. This finding suggests that the Sun's long-term behavior may be more frequent than previously thought, with implications for forecasting dangerous space weather.

SourceMax Planck Institute for Solar System Research·JournalScience·TypeObservational study·DateDec 12, 2024

Astronomers discover first pairs of white dwarf and main sequence stars in clusters, shining new light on stellar evolution

The discovery provides a unique way to investigate the extreme phase of stellar evolution, bridging the gap between the earliest and final stages of binary star systems. This breakthrough could help explain cosmic events like supernova explosions and gravitational waves.

SourceUniversity of Toronto·JournalThe Astrophysical Journal·TypeData/statistical analysis·DateNov 19, 2024

NASA’s Hubble finds that a black hole beam promotes stellar eruptions

Astronomers using NASA's Hubble Space Telescope discovered that the blowtorch-like jet from a supermassive black hole at the core of a huge galaxy causes stars to erupt along its trajectory. The finding suggests that there is something missing from our understanding of how black hole jets interact with their surroundings.

SourceNASA/Goddard Space Flight Center·JournalThe Astrophysical Journal·TypeObservational study·DateSep 26, 2024

Webb finds early galaxies weren’t too big for their britches after all

Recent discoveries from the James Webb Space Telescope's Cosmic Evolution Early Release Science Survey have cast doubt on the crisis in cosmology. Astronomers found that early galaxies were not as massive as initially thought due to the presence of black holes, which made them appear brighter and more massive than they actually are.

SourceNASA/Goddard Space Flight Center·JournalThe Astrophysical Journal·TypeNews article·DateAug 26, 2024