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NASA’s Parker Solar Probe has just completed its 23rd close approach to the Sun, once again flying through the solar corona at a blistering 430,000 miles per hour. Credit: Johns Hopkins University/APL/Steve Gribben ================================================================================== NASA’s Parker Solar Probe once again dived deep into the Sun’s atmosphere, matching its own record for speed and proximity. Racing at 430,000 mph and skimming just 3.8 million miles from the solar surface, the probe gathered rare data from within the Sun’s corona. On March 22, NASA’s Parker Solar Probe completed its 23rd close encounter with the Sun, reaching a distance of just 3.8 million...

Billings, Mont. -- Most elk, bison and trumpeter swans are unfazed by the presence of snowmobiles in Yellowstone National Park, a new study suggests. Researchers from the park and Montana State University observed more than 2,100 interactions between snowmobiles and wildlife last winter. In 81 percent of the interactions, the animals either had no apparent response, or they looked and then resumed what they were doing, the study said. The study, commissioned by the National Park Service and conducted between December 2004 and March 2005, is one of several that park officials say they will take into account as they...