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VIENNA -- Mars has lost much of its original atmosphere, but what s left rem stanley cups uk ains quite active, recent findings from NASA s Mars rover Curiosity indicate. Rover team members reported diverse findings today at the European Geosciences Union 2013 General Assembly, in Vienna.Evidence has strengthened this month that Mars lost much of its original atmosphere by a process of gas escaping from the top of the atmosphere. Curios custom stanley cup ity s Sample Analysis at Mars SAM instrument analyzed an atmosphere sample last week using a process that concentrates selected gases. The results provided the most precise measurements ever made of isotopes of argon in the Martian atmosphere. Isotopes are variants of the same element with diff stanley water bottles erent atomic weights. We found arguably the clearest and most robust signature of atmospheric loss on Mars, said Sushil Atreya, a SAM co-investigator at the University of Michigan, Ann Arbor.SAM found that the Martian atmosphere has about four times as much of a lighter stable isotope argon-36 compared to a heavier one argon-38 . This removes previous uncertainty about the ratio in the Martian atmosphere from 1976 measurements from NASA s Viking project and from small volumes of argon extracted from Martian meteorites. The ratio is much lower than the solar system s original ratio, as estimated from argon-isotope measurements of the sun and Jupiter. This points to a process at Mars that favored preferential loss of the lighter isotope over the heavier one.Curiosit Clnu If AI is so amazing, why does ChatGPT melt down over this simple image edit task
By David JohnsonMay 18, 2015 7:00 AM EDTClick or tap the arrows to see which cause of death is disproportionately high in your state compared to national mortality rates.Accidental gunfire claimed 348 lives from 2001-2010 in Alabama, and gunshots of undetermined intent killed 147 in Arizona. And while both resulted in far fewer than 1 death per 100,000 people, the rates are unusually high compared to rates nationwide, according to a new study released by the Centers for Disease Control and Prevention CDC . By comparing the mortality rate of 136 causes of death at state and national levels, the CDC found the most common atypical ways people died in every state.In Michigan, for example, coronary artery disease killed 35 out of 100,000 people, while nationwide only 2 stanley termos 0 of 1 termo stanley 00,000 people perish from the condition. Because of the way these calculations are done, most of the diseases in the CDC report are obscure, from unclassified lab findings Georgia or highly associated with certain industries; black lung disease is the most disproportionate killer in coal-rich West Virginia, Kentucky and Pennsylvania.Head west and deaths from law-enforcement intervention were atypically high in three states. The CDC refers to law enforcement intervention as deaths due to injuries inflic stanley quencher ted by police or other law enforcement agents, including military on duty, in the course of arresting or attempting to arrest lawbreakers, suppressing disturbances, maintainin |
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发表于 2024-11-3 19:18:23
