July 31 - Tracking Near-Earth Objects

July 31 Tracking Near-Earth Objects by:

20 years of tracking Near-Earth Objects Asteroid on a collision course with Earth? These astronomers will likely see it first. NASA's Center for Near-Earth Object Studies - now entering its 3rd decade - makes over 90 percent of near-Earth asteroid and comet discoveries.  Here's how and why they do their work. Today … Mars closest to Earth Closest since 2003!  How far is a light-year? How can we comprehend the distances to the stars? This post explains light-years in terms of a scale of miles and kilometers. Which lizards can outlast a hurricane? In the wake of hurricanes Irma and Maria, researchers document how catastrophic storms can be agents of natural selection, influencing how species evolve.

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Reaching to the stars   Via Miska Saarikko Photography/Timelapse.

Today ... Mars closest to Earth Red Mars, red moon. Yadi Suryadi in West Java, Indonesia, wrote: "The moon became red when it began to reach the peak of the total lunar eclipse (right), and the red planet Mars around its opposition (left)." Submit your photo to EarthSky here! Did a friend forward EarthSkyNews to you? Click here to get your own subscription!

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