EarthSky News - Oct 18 - Seeking Planet 9

October 18 Seeking Planet 9 by:

More evidence for a Planet 9 No new large planet on the outskirts of our solar system has yet been discovered, although evidence is building, astronomers say. By the way, if Planet 9 does exist … it's definitely not headed our way. Traveling to Mars? Top 6 health challenges NASA aims to have humans on Mars by the 2030s. People making the long space journey will experience health risks they've never faced before. See it! Moon passes Venus and Mars Did you see the moon sweep past the planets this week? Spectacular images from EarthSky friends here. Thanks to all who submitted! Tonight … Bright star Deneb transits at nightfall When the sun or a star transits, it's at its highest in the sky. Deneb's transit at nightfall marks a shift toward winter - or summer - depending on where you are.

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Tonight … Bright star Deneb transits at nightfall Deneb is one of 3 bright stars in the famous Summer Triangle asterism.

See it! Moon passes Venus and Mars Moon above bright Venus, on Tuesday morning. In this image from Hope Carter in Martin, Michigan, you can see 2 fainter "stars" to the right of the moon. The upper one is really another planet, Mars, and the lower one is a true star, Zavijava in the constellation Virgo. Submit your photo to EarthSky here!

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