All articles tagged with #impact
An amateur in Quebec spotted a circular feature on Google Maps that led scientists to confirm Uhackatik, a roughly 15.5-mile-wide meteorite impact crater dating to about 390 million years ago in Quebec’s Côte-Nord. Fieldwork uncovered shatter cones and impact-melt rock, making it one of the largest crater discoveries in recent years; researchers plan to present results at the Meteoritical Society meeting.
Geologists analyzing 21 baddeleyite grains in lunar breccia NWA 12593 found evidence of a separate, ultra-high-temperature impact around 3.486 billion years ago, implying a prolonged bombardment of the inner Solar System after the Late Heavy Bombardment and aligning with Earth and Vesta records; the findings offer clues about how such catastrophic events may have influenced the environment when life was emerging on Earth.
A new presentation argues Venus’s slow retrograde rotation could result from a high-angle, moon-sized impact in its first 50 million years, triggering a magma ocean and melting most of the mantle; depending on the impact specifics, this could evolve into the current rotation while leaving open questions about interior water and Venus’s lack of plate tectonics.
Seismic data and rock cuttings confirm the Silverpit Crater off Yorkshire formed 43–46 million years ago when a ~160-meter asteroid struck the shallow North Sea, vaporizing rock and water and spawning a tsunami over 100 meters tall; two shocked mineral grains in nearby samples settled the long-running debate and establish Silverpit as a rare marine impact crater.
NASA's Lunar Reconnaissance Orbiter captured before-and-after images of a 225‑meter crater formed in spring 2024 by a fast-moving space rock, making it the largest crater formed during the LRO mission and providing rare, high-resolution data to refine crater-formation models for the Moon and other rocky worlds.
NASA’s Lunar Reconnaissance Orbiter identified a new 225-meter crater on the Moon, formed in 2024 in a rare event (about once every 139 years), with ejecta spreading hundreds of meters and debris detectable up to 120 kilometers away, signaling ongoing surface hazards for future lunar missions.
Scientists have identified hundreds of tektites—glass droplets formed when a meteorite melted surface rock—over a 900-km region in Brazil, named geraisites. Dating places the material up to about 6.3 million years old and reveals an ancient crustal source from the São Francisco Craton. No nearby crater has been found, but the discovery expands Brazil's impact history and suggests tektites may be more common than previously thought.
Brazilian researchers have identified the country’s first tektite field, Geraisites, a collection of glassy fragments spread across Minas Gerais and adjacent states that indicate a substantial ancient impact. Dating with 40Ar/39Ar places the event at about 6.3 million years ago, during the Miocene, with isotopic signatures pointing to a very old continental crust source in the São Francisco craton. The field now spans over 900 km, and while no crater is yet known, the data imply a powerful impact with dispersed molten material; researchers plan aerogeophysical surveys and modeling to estimate the event’s energy, velocity, and crater geometry. This discovery expands South America’s sparse tektite record and suggests tektites may be more common than previously thought.
A significant number of Gen Z graduates are entering teaching, driven by a desire for impact and purpose, despite challenges like low pay and burnout, with many motivated by the opportunity to make a difference and bring new approaches to education.
The article discusses the potential consequences of a hypothetical scenario where the United States implements zero immigration, highlighting how such policies could affect various sectors like healthcare, education, and community life, based on current trends and recent crackdowns.
A large butterfly-shaped impact crater on Mars, created by a low-angle asteroid collision, shows signs of having been influenced by water, providing insights into the planet's watery past and impact history.
Sydney Sweeney stars in and produces the boxing film 'Christy,' about Christy Martin, which had a poor box office debut but she emphasizes its emotional and social impact, highlighting its message of survival and hope, and her personal dedication to the project.
Sydney Sweeney addressed the poor box office performance of her film 'Christy,' emphasizing that the movie's impact and message about survival and domestic violence are more important than commercial success, despite its disappointing $1.3 million opening.
A Tesla in South Australia was struck by a mysterious object, possibly a meteorite, causing the windscreen to melt and leaving experts skeptical about its space origin, with investigations ongoing to determine the true nature of the impact.
The ongoing federal government shutdown has led to missed paychecks for federal workers, potential loss of food and nutrition benefits like SNAP and WIC, and the suspension of programs such as Head Start, with impacts varying across states. Key issues include funding lapses, legal actions, and regional differences in how communities are coping with the shutdown's effects.