EarthSky News - Sept 3 - Top Stories This Week

September 3 Top Stories This Week by:

September guide to the bright planets Which planets to look for in your night sky this month, and when. Alien seekers report 15 more fast radio bursts Breakthrough Listen used the Green Bank Telescope to observe the bursts from the mysterious object known as FRB 121102. First hints of water on TRAPPIST-1 planets Hubble study suggests there might be water on the outer planets orbiting nearby dwarf star TRAPPIST-1. Cassini plunges into Saturn September 15 Mission milestones before the spacecraft plunges into Saturn. Dark for 2 years after dino-killing asteroid? Can you imagine a sky so laden with soot that all of Earth stayed dark for 2 years? Biblical signs in the sky? As we edge toward September 23, 2017, more and more people are visiting this post. Mystery of high-energy cosmic rays Hold out your hand for 10 seconds. A dozen electrons and muons just zipped through your palm. Before dawn now … Orion's Belt points to Sirius Sirius is the brightest star in the sky. You don't need Orion's Belt to find it. But, right now, Venus is also up before dawn. If you get confused, use this trick to be sure you've identified Sirius.

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Before dawn now … Orion's Belt points to Sirius It's one of the neatest tricks in all the heavens.

Autumn is coming! The start of September means that autumn is just around the corner. Manish Mamtani took this shot in September 2016 in Grand Teton National Park in Wyoming. Submit your photo to EarthSky here!

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