Tuesday, October 29, 2019

It's an asteroid! No, it's the new smallest dwarf planet in our solar system - CNN

(CNN) A large asteroid could be reclassified as a dwarf planet -- which could make it the smallest in the solar system -- after new research revealed its shape, astronomers said on Monday.

Publisher: CNN
Date: 2019-10-28T16:00:06Z
Author: Ashley Strickland and Amy Woodyatt CNN
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While you're here, how about this:

Why a rocky planet with three suns has astronomers' attention

"We can stare at it using a spectrograph," said Winters, lead author on "Three Red Suns in the Sky: A Transiting, Terrestrial Planet in a Triple M Dwarf System at 6.9 Parsecs," published in the Astronomical Journal . "It's one of the best examples of a rocky planet that might have an atmosphere that we can study to see what it's made of."

For the next few months, before the planet is hidden from our view behind the sun, Winters and her collaborators will gather data and monitor it. Using data from the Giant Magellan Telescope in Chile, as well as NASA's Hubble and Spitzer space telescopes, the team will try to measure the planet's mass and determine whether it is indeed a rocky, as opposed to gaseous, planet! It's an asteroid! No, it's the new smallest dwarf planet ...www.cnn.com ...A large asteroid could be reclassified as a dwarf planet -- which could make it the smallest in the solar system -- after new research revealed its shape, astronomers said on Monday.!! The mass of the new find matters, she explained, because it correlates with how thick any atmosphere is expected to be. And if there is none—if, perhaps, one has been burned off by radiation—scientists will see whether one is sprouting, perhaps replenished by gases emitted by the crust.

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Lessons from scorching hot weirdo-planets

Illustration of a hot Jupiter planet in the Messier 67 star cluster. Hot Jupiters are so named because of their close proximity — usually just a few million miles — to their star, which drives up temperatures and can puff out the planets.

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Hot Jupiters were the first kind of exoplanet found. A quarter-century later, they still perplex and captivate — and their origins hold lessons about planet formation in general.

In 1995, after years of effort, astronomers made an announcement: They'd found the first planet circling a sun-like star outside our solar system! It's an asteroid! No, it's the new smallest dwarf planet ...fox6now.com /2019/10/28/ ...A large asteroid could be reclassified as a dwarf planet -- which could make it the smallest in the solar system -- after new research revealed it's shape, astronomers said on Monday. Nestled in ...!! But that planet, 51 Pegasi b, was in a quite unexpected place — it appeared to be just around 4.8 million miles away from its home star and able to dash around the star in just over four Earth-days. Our innermost planet, Mercury, by comparison, is 28.6 million miles away from the sun at its closest approach and orbits it every 88 days.

Date: Thursday, October 10, 2019 - 08:00
Twitter: @knowablemag
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NASA chief says 'Pluto should be a planet' | Fox News

“I am here to tell you, as the NASA Administrator, I believe Pluto should be a planet,” he said, to applause during a wide-ranging speech at the International Astronautical Congress in Washington D.C. Friday.

Bridenstine later responded to a question on his Pluto stance by citing its buried ocean , its moons and its multilayered atmosphere. “I like there being nine planets, how about that?” he added.

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Pluto lost its planet status in 2006 when it was controversially demoted to “dwarf planet” by the International Astronomical Union.

This is not the first time that Bridenstine has voiced his desire to see Pluto become a planet again. "You can write that the NASA administrator declared Pluto a planet once again! It's an asteroid! No, it's the new smallest dwarf planet ...earthmystery new s.com/2019/10/29/ ...A large asteroid could be reclassified as a dwarf planet -- which could make it the smallest in the solar system -- after new research revealed it's shape, astronomers said on Monday. Source: CNN Nestled in the asteroid belt between Mars and Jupiter is an object that may have been overlooked.!! I’m sticking by that, it’s the way I learned it and I’m committed to it,” he said during a recent speech at the University of Colorado.

Publisher: Fox News
Date: 2019-10-25
Twitter: @foxnews
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In case you are keeping track:

Understanding of How Planets Form Challenged by Giant Exoplanet Around Tiny Star

This illustration shows a red dwarf star orbited by a hypothetical exoplanet. Credit: NASA/ESA/G. Bacon (STScI)

An international team of researchers with participation from the University of Göttingen has discovered the first large gas giant orbiting a small star. The planet was found orbiting the nearby red dwarf star GJ 3512. This discovery challenges scientists’ very understanding of how planets form: low-mass stars should have less available material to form planets! It's an asteroid! No, it's the new smallest dwarf planet ...techupdatess.com/ ...Nestled in the asteroid belt between Mars and Jupiter is an object that may have been overlooked. They believe the asteroid Hygiea should actually be classified as a dwarf planet. There aren't many dwarf planets in our solar system. The five classified as dwarf planets include Pluto (although some still regard it as the ninth …!! Moreover, this new gas giant is on an eccentric orbit, which suggests the presence of another massive planet, which may have been ejected from the system in a chaotic interaction! It's a comet! No, it's an asteroid! No, it's an alien ...www.washingtonpost.com / new ...comet- no ...No one can say precisely what the dimensions are, but the best estimate is that it's half a mile long and only a 10th of that in diameter, according to Meech.!! The results were published in Science .

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The Institute for Astrophysics at the University of Göttingen calibrated the data, a task that is fundamental to understanding the minute affect the motion of the planet or planets exert on a star. The Institute is also responsible for the analysis of the enormous amount of complex data sent from the observatory. Every day, fresh information arrives at the institute and is converted into numbers that the CARMENES consortium scientists can then interpret as stellar motion.

Publisher: SciTechDaily
Date: 2019-10-27T12:37:59-07:00
Author: Mike O
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What moons in other solar systems reveal about planets like Neptune and Jupiter

Bradley Hansen does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

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What is the difference between a planet-satellite system as we have with the Earth and Moon, versus a binary planet – two planets orbiting each other in a cosmic do-si-do?

In 2018, two astronomers from Columbia University reported the first tentative observation of an exomoon – a satellite orbiting a planet that itself orbits another star. One curious feature was that this exomoon Kepler-1625b-i was much more massive than any moon found in our solar system. It has a mass similar to Neptune and orbits a planet similar in size to Jupiter.

Astronomers expect moons of planets like Jupiter and Saturn to have masses only a few percent of Earth. But this new exomoon was almost a thousand times larger than the corresponding bodies of our solar system – moons like Ganymede and Titan which orbit Jupiter and Saturn, respectively. It is very difficult to explain the formation of such a large satellite using current models of moon formation.

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Publisher: The Conversation
Date: 20191002
Author: Bradley Hansen
Twitter: @ConversationUS
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