This graphic shows the position of the Voyager 1 and Voyager 2 probes relative to the heliosphere, a protective bubble created by the sun that extends well past the orbit of Pluto. Voyager 1 crossed the heliopause, or the edge of the heliosphere, in 2012. Voyager 2 is still in the heliosheath, or the outermost part of the heliosphere. Image via NASA/JPL-Caltech.
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Tonight, look for Arcturus, 1 of 3 stars noticeable for flashing in colors at this time of year. You should be able to see it in the west at dusk or nightfall. Read more.
