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Was Our Sun A Twin? If So Then 'Planet 9' Could Be One Of Many Hidden Planets In Our Solar System
Published today in The Astrophysical Journal Letters , the paper by Dr. Avi Loeb, Professor of Science at Harvard and Harvard undergraduate student Amir Siraj goes against the dominate "lone star" thinking about the Sun's origin.
Their radical-sounding theory that the Solar System may have once been a binary star system—so consisting of two stars orbiting a common point in space—perhaps shouldn't come as a surprise. "Most Sun-like stars are born with binary companions," said Siraj.
The Sky This Week: Planets galore in the late summer skies | Astronomy.com
All The Planets In The Solar System Are In Our Night Sky This Week. Here's How You Can See Them
The planets are all on one side of the Solar System, with Earth somewhere in the "middle" of the cluster.
While this is normal, natural and nothing to worry about (no, the Solar System won't get lop-sided!), it could cause you to ask a question:
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Yes! However, you're going to have to be quick if you want to see them since Mercury—the closest planet to the Sun, which whips around our star once every 88 days—won't be easy to see for long.
This may worth something:
Planets Saturn and Jupiter getting closer together than any time since 1623
This month's column is kind of a drum roll to introduce an event that doesn't happen until December: the Great Conjunction of Jupiter and Saturn.
The first thing we need is a definition: In astronomy, a conjunction is when two celestial objects temporarily appear to be close together — and Jupiter and Saturn will be very close together on Dec. 21, which also happens to be the winter solstice.
We're bringing up the Great Conjunction three months early because watching the two planets slowly approach each other will be as fascinating as the conjunction itself. It's the anticipation, like the Times Square New Year's Eve ball drop: At midnight, everybody goes crazy when the ball reaches the end of its journey to mark the beginning of the new year, but it's every bit as much fun watching the ball descend as it ticks off the last 60 seconds of the old year.
Astronomers Mystified by Eerie Phenomenon on Mars: Ultraviolet "Nightglow" Spreads Across the
This is an image of the ultraviolet “nightglow” in the Martian atmosphere over the south pole. Green and white false colors represent the intensity of ultraviolet light, with white being the brightest. The nightglow was measured at about 70 kilometers (approximately 40 miles) altitude by the Imaging UltraViolet Spectrograph instrument on NASA’s MAVEN spacecraft.
An astronaut standing on Mars couldn’t see this “nightglow”—it shows up only as ultraviolet light. But it may one day help scientists to better predict the churn of Mars’ surprisingly complex atmosphere.
Why Aren't There More Earth-Like Planets in… | The Planetary Society
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Soyuz 23 performed the only completely unintended splashdown of a spacecraft carrying humans, and it wasn't fun.
Mat Kaplan: NASA's OSIRIS REx successfully completed a final practice session for its descent to asteroid Bennu in October. The spacecraft team believes they are now ready to collect a precious sample for return to earth. Then there's the bad news about the giant Arecibo observatory in Puerto Rico, which has certainly seen more than its share of challenges in recent years. A snapped cable damaged a significant portion of the great dish and the dome that is suspended high above.
I Was The Sun... And The Kids Were My Planets | TAPinto
Republished with permission from the author, this piece was originally posted in The Boston Globe in 2006
I wasn’t wrong about their leaving. My husband kept telling me I was. That it wasn’t the end of the world when first one child, then another, and then the last packed their bags and left for college.
“They’ll be back,” my husband said. And he was right. They came back. But he was wrong, too, because they came back for intervals, not for always, not planets anymore, making their predictable orbits, but unpredictable, like shooting stars.
Happening on Twitter
Did you know there are planets beyond our solar system wandering the galaxy alone? These worlds are unbound to any… https://t.co/2MQPDEEtnL NASAExoplanets (from Beyond) Fri Aug 21 17:10:11 +0000 2020
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