Tuesday, January 22, 2019

Jan 22 - No More Planet 9?

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Artist's concept of small bodies in the far outer solar system. Some of their orbits are strange, and that strangeness has caused astronomers to search for another undiscovered, large planet in our solar system. Image via University of Cambridge.
Mystery orbits not caused by Planet 9, researchers say
Here's an alternative explanation to the Planet 9 hypothesis, the idea that a large undiscovered planet in the outer solar system is pulling on some small outer worlds, distorting their orbits. Read more.
Plants sprout - and die - on the moon
For the first time ever, planets were sprouted on the moon - but didn't survive long - as part of a biosphere experiment on China's Chang'e-4 lander. Read more.
Stargazing destinations: Alberta
Skywatchers! Check out this first video in the Chasing Darkness series, a stargazing destination guide. This episode: dark sky preserves in Alberta, Canada. Watch video.

View larger.| Jasper National Park Dark-Sky Preserve, Alberta, Canada’s first dark sky preserve. Image and video series via Jack Fusco.

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Tonight … Moon pairs with Regulus
The waning moon - fresh from Sunday's eclipse - and the bright star Regulus in the constellation Leo the Lion will rise over your eastern horizon in the hours after sunset tonight.
See it! Venus and Jupiter before sunrise
View larger at EarthSky Community Photos. | Our friend Tom Wildoner in Weatherly, Pennsylvania, wrote this morning: "What a pleasant sight to wake up to a day after the lunar eclipse! The planets Venus and Jupiter rising in the eastern skies over my leafless winter trees. Currently, a balmy 6 degrees Fahrenheit (-14 Celsius), still not cold enough to prevent me from getting this shot." See more photos.
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