EarthSky News - Sept 13 - Life from Interstellar Space?

September 13 Life from Interstellar Space? by:

Does organic material in comets predate our solar system? "If cometary organic molecules were indeed produced in interstellar space—and if they played a role in the emergence of life on our planet—might they not also have seeded life on many other planets of our galaxy?" Farthest lunar perigee today The moon reaches perigee - its closest point to Earth - once each month. Today's perigee is the most distant one of 2017. Andromeda galaxy: Milky Way's next-door neighbor The Andromeda galaxy is the closest spiral galaxy to our Milky Way and the most distant thing you can see with your eye alone. Find it in your night sky! Openings in Antarctic sea ice affect global climate Heat escaping through openings in sea ice influences sea and atmospheric temperatures and wind patterns around the globe - even rainfall around the tropics, says new study.

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Use Cassiopeia to find Andromeda galaxy Note the M or W shape of Cassiopeia. Note that one half of the W is more deeply notched than the other half. This deeper V is your "arrow" in the sky, pointing to the Andromeda galaxy. Here's how you find Cassiopeia.

Use Great Square to find Andromeda galaxy Imagine the Great Square of Pegasus as a baseball diamond. Think of the star Alpheratz as 3rd-base. An imaginary line from the 1st-base star through Alpheratz points in the galaxy's general direction. Here's how you find the Great Square. Submit your photo to EarthSky here!

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