Comet NEOWISE seems to beckon a fellow space explorer heavenward in a gorgeous new photo.
The rocket won't be there much longer. It's poised to launch Anasis 2, South Korea's first military satellite, this evening during a four-hour window that opens at 5:30 p.m. EDT (2130 GMT). You can watch the liftoff live here at Space.com, courtesy of SpaceX.
This will be the second flight for the first stage of this particular Falcon 9. On May 30 of this year, the booster helped launch SpaceX's historic Demo-2 test mission, which sent NASA astronauts Bob Behnken and Doug Hurley to the International Space Station aboard a Crew Dragon capsule.
Comet NEOWISE is the brightest comet to grace Earth's skies since Hale-Bopp back in the mid-1990s. NEOWISE is currently naked-eye visible to observers under clear, dark skies in the Northern Hemisphere; look just above the northwestern horizon, under the Big Dipper, shortly after sunset.
The 3-mile-wide (5 kilometers) NEOWISE was discovered on March 27 by NASA's Near-Earth Object Wide-field Infrared Survey Explorer spacecraft (hence the name). The comet made its closest approach to the sun on July 3 and is now zooming back toward the outer solar system, where it spends most of its time.
Comet NEOWISE will make its closest approach to Earth on Wednesday (July 22), coming within 64 million miles (103 million km) of our planet. NEOWISE will likely be visible through the end of July, experts say. But they also stress how unpredictable comets are and how difficult it is to forecast their behavior.
So go out and look at NEOWISE whenever conditions allow. We don't know how long the comet will keep putting on this sky show, and it won't be back in our neighborhood for another 6,800 years!
Mike Wall is the author of "Out There" (Grand Central Publishing, 2018; illustrated by Karl Tate), a book about the search for alien life. Follow him on Twitter @michaeldwall. Follow us on Twitter @Spacedotcom or Facebook.