The standard model of how the universe works involves the widely accepted theory that dark energy is a fundamental constant ...

NASA expects to soon launch a mission to create the most colorful 3D map of the entire sky yet. Known as SPHEREx, it will analyze every pixel to see what's there, what it's made of, and how far away ...

Matt Nelson, executive director of the Arizona Trail Association ... "If you look at a map of the state of Arizona. It's public land. It's ours. It's yours it's mine. It's future generation's ...

you'll have to pay more to reach scenic views at Arizona State Parks because Arizona State Parks and Trails are raising fees at more than 30 parks to support park operations. The price of an ...

More than 2,000 trail riders on horseback and in carriages are making their way to Memorial Park in Houston. They are part of 11 trail rides that begin across Southeast Texas. They will ride in the ...

Matt Nelson, executive director of the Arizona Trail Association ... “If you look at a map of the state of Arizona. It’s public land. It’s ours. It’s yours it’s mine.