Tuesday, January 16, 2018

Jan 16 - Milky Way as Melting Pot

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Our Milky Way as a "melting pot"

Where do stars we see at night come from? Newly confirmed streams of stars - thought to be coming to our Milky Way from other galaxies - suggest not all Milky Way were born here.

New moon is January 16-17

This new moon is most nearly between the Earth and sun for this month. It crosses the sky with the sun during the day.

Lengths of lunar months in 2018  

This new moon ends the longest lunar month of the 21st century and begins the longest lunar month of 2018.

Tonight … Contemplate the apex of the sun's way

Our sun moves around the center of the galaxy, toward the star Vega. Astronomers call this motion the apex of the sun's way. One circuit - about 230 million years - is called a cosmic year.
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Help us keep presenting your world, and cosmos, to you.

Contemplate the apex of the sun's way

We move toward this star, the blue-white star Vega, in our journey around the galaxy. Photo via Fred Espenak. Used with permission.

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Farewell, old moon

Juan Manuel Pérez Rayego in Mérida, Mexico wrote Monday morning: "Mercury down, moon and Saturn above, before a cold dawn." More photos of morning planets here.

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