Asteroid Impact Carves 'Grand Canyons' on Moon in Just Minutes

USUnited States|

Recent research published in Nature Communications reveals that two grand canyons on the moon, located in the Schrödinger impact basin, were formed by an asteroid impact approximately 3.8 billion years ago. The canyons, Vallis Planck and Vallis Schrödinger, are comparable in size to Earth's Grand Canyon, measuring 280 kilometers and 270 kilometers in length, respectively. "The asteroid’s impact unleashed energy equivalent to 130 times the current global nuclear arsenal," stated David Kring, a geologist at the Lunar and Planetary Institute.

The impact occurred during a period of heavy bombardment in the inner solar system, believed to be caused by gravitational shifts among the giant planets. The process of canyon formation was rapid, taking less than ten minutes as debris was ejected into space before showering back down. This geological event has implications for future lunar exploration, particularly for NASA's Artemis mission, as it could provide easier access to some of the oldest lunar rocks near the south pole, enhancing our understanding of the moon's history.

Weekly Newsletter

Loading...

More from United States

US Scientists Face Funding Crisis Amid Trump Administration's Executive Orders

Scientists across the United States are encountering significant disruptions to their research funding as a result of recent executive orders issued by former President Donald Trump. The National Science Foundation (NSF), which administers approximately $10 billion in annual research funding, experienced a shutdown of its payment gateway that left millions in federal grants on hold for five days. Although the gateway resumed operations on Sunday, concerns remain high regarding the future of funding amid new political scrutiny. Many researchers reported difficulties in processing funding requests and expressed alarm over potential changes impacting grants related to diversity, equity, and inclusion. According to a report by Nature, around 10,000 existing grants were flagged by NSF staff for possible cancellation. A California-based psychologist described the chilling effect these policies have on scholars' ability to voice political opinions, stating, "the administration is using unclear political criteria." As a result, researchers have begun forming private communication networks to safeguard academic freedom and exchange ideas to navigate these challenges, reflecting growing apprehension in the academic community.
USUnited States

Trump Imposes Tariffs Amid Rising Fentanyl Crisis

President Donald Trump has enacted significant tariffs on Chinese goods, attributing the move to China's alleged failure to halt the export of chemicals used in fentanyl production. This comes as the U.S. grapples with a serious opioid crisis, with over 74,000 overdose deaths linked to fentanyl reported in 2023 by the U.S. Centers for Disease Control and Prevention. Trump has also criticized Canada and Mexico for not preventing smuggling activities but temporarily suspended tariffs against these nations following negotiations for enhanced border security. Fentanyl, a potent synthetic opioid, is primarily sourced from China, with its precursor chemicals trafficked through Mexico, where organizations such as the Sinaloa Cartel are heavily involved in production and distribution. According to U.S. Customs and Border Patrol, nearly all fentanyl seizures—approximately 4,500 lbs since September—occurred at the U.S.-Mexico border, while only 0.2% were intercepted at the Canadian border. Calls for accountability have intensified, with the Trump administration accusing Mexican authorities of colluding with drug cartels, a claim Mexico's President Claudia Sheinbaum dismissed as "slander." As the fentanyl supply chain expands, both U.S. and international efforts to curb its flood remain critically challenged.
USUnited States

Lawsuit Filed After Young Man Dies Due to Asthma Medication Access Issues

The parents of Cole Schmidtknecht, a 22-year-old from Appleton, Wisconsin, have initiated a federal lawsuit against Walgreens and OptumRx, claiming negligence that contributed to their son's death from an asthma attack. According to the lawsuit, Schmidtknecht could not afford a life-saving inhaler priced at $539.19 after his insurance coverage was dropped. His parents argue that both companies failed to provide alternative options during his prescription refill request on January 10, 2024. Schmidtknecht had relied on his inhaler, Advair Diskus, since childhood but was left without it when it was excluded from OptumRx's formulary. His family contends that he was not given sufficient notice of this change, violating Wisconsin law. Five days after leaving the pharmacy without the inhaler, Schmidtknecht suffered a severe attack, leading to his death on January 21. The family seeks financial compensation and aims to spark reforms in the health care system, highlighting issues around pharmaceutical pricing and access to essential medications. Walgreens has not commented on the matter due to ongoing litigation, while OptumRx expressed sorrow over Schmidtknecht's death and stated they followed industry practices.
USUnited States