Thursday, October 31, 2019

NASA Just Picked New Planetary Missions to Study. Here Are The Most Exciting Ones

Look, Mars is great. It's full of great rocks , and those blue sunsets are just top-notch. But there's no denying it: Mars definitely gets way more attention than other planets! NASA Just Picked New Planetary Missions to Study. Here Are ...www.sciencealert.com/ nasa - ...new - planetary - ...be-studied...NASA Just Picked New Planetary Missions to Study. Here Are The Most Exciting Ones . MICHELLE STARR . 24 OCT 2019 . Look, Mars is great. It's full of great rocks, and those blue sunsets are just top-notch. But there's no denying it: Mars definitely gets way more attention than other planets. At time of writing, there are eight active probes on ...!! At time of writing, there are eight active probes on or orbiting Mars.

Other Solar System planets have their secrets too, and NASA has just funded a bunch of planetary mission concept studies to see what's feasible to explore in the near future.

These studies will be published in the 2023 Planetary Science Decadal Survey, a US National Research Council publication produced every 10 years or so, identifying key issues and outlining recommendations for the coming decade in planetary science.

Not all of the concept studies will be selected to be developed into full missions; and then, not all the selected missions will end up being fully developed! NASA just picked new planetary missions to study. Here are ...www.nexus new ...nasa - just - picked - new - planetary ...NASA just picked new planetary missions to study. Here are the most exciting ones. Look, Mars is great. It's full of great rocks, and those blue sunsets are just top-notch. But there's no denying it: Mars definitely gets way more attention than other planets. At time of writing, there are eight active probes on or orbiting Mars.!! A Mars mission concept from the 2013 survey, for instance, was cancelled .

Publisher: ScienceAlert
Date: Look, Mars is great. It
Author: Michelle Starr
Twitter: @ScienceAlert
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And here's another article:

This is the closest solar system to Earth containing multiple planets - CNN

(CNN) Just 11 light years from earth is the GJ 15 A star system with two planets orbiting a red-dwarf star. This makes it the closest solar system to Earth that contains multiple planets.

Publisher: CNN
Date: 2019-10-16T22:26:17Z
Author: Ashley Strickland CNN
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Simulations explain giant exoplanets with eccentric, close-in orbits -- ScienceDaily

As planetary systems evolve, gravitational interactions between planets can fling some of them into eccentric elliptical orbits around the host star, or even out of the system altogether! NASA Just Picked New Planetary Missions to Study. Here Are ...galacticconnection.com/ ...study-here...This, according to planetary physicist Abigail Rymer of Johns Hopkins University and colleagues, is an issue that needs to be addressed. They propose a flagship mission to the outer Solar System to study not just Neptune, but its moon Triton – the only moon in the Solar System to orbit its planet against the planet 's rotation.!! Smaller planets should be more susceptible to this gravitational scattering, yet many gas giant exoplanets have been observed with eccentric orbits very different from the roughly circular orbits of the planets in our own solar system.

Surprisingly, the planets with the highest masses tend to be those with the highest eccentricities, even though the inertia of a larger mass should make it harder to budge from its initial orbit! NASA Just Picked New Planetary Missions to Study. Here Are ...scienceglobal new s.com/space/ ...are...NASA Just Picked New Planetary Missions to Study. Here Are The Most Exciting Ones. October 24, 2019 by admin 0 Comments. Share on Facebook. Share on Twitter. Share on Google+. Share on Pinterest. Share on LinkedIn. Share on Facebook. Share on Twitter. Share on Google+. Share on Pinterest.!! This counter-intuitive observation prompted astronomers at UC Santa Cruz to explore the evolution of planetary systems using computer simulations! Flipboard: NASA Just Picked New Planetary Missions to ...study...NASA Just Picked New Planetary Missions to Study. Here Are The Most Exciting Ones. ScienceAlert - Michelle Starr. Look, Mars is great. It's full of great rocks, and those blue sunsets are just top-notch. But there's no denying it: Mars definitely gets way more …!! Their results, reported in a paper published in Astrophysical Journal Letters , suggest a crucial role for a giant-impacts phase in the evolution of high-mass planetary systems, leading to collisional growth of multiple giant planets with close-in orbits.

Publisher: ScienceDaily
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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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And here's another article:

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.

* * *

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. 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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Another Pluto? What the discovery of a new dwarf planet means to astronomy | Salon.com

Ceres, Eris, Makemake, Haumea, and Pluto are expected to have a new friend, Hygiea, inducted into our solar system’s dwarf planet club. Hygiea was long believed to be a large asteroid in the asteroid belt, but has met all the requirements needed to become a dwarf planet thanks to new observations made by Chile’s Very Large Telescope (VLT).

The findings and new images that suggest Hygiea is actually a dwarf planet were published in Nature Astronomy by astronomer Pierre Vernazza of the Laboratoire d’Astrophysique de Marseille in France and his team of researchers.

“Thanks to the unique capability of the SPHERE instrument on the VLT , which is one of the most powerful imaging systems in the world, we could resolve Hygiea’s shape, which turns out to be nearly spherical,” Vernazza  said in a media statement . “Thanks to these images, Hygiea may be reclassified as a dwarf planet, so far the smallest in the Solar System.”

Publisher: Salon
Date: 2019-10-29 18:42:38
Twitter: @Salon
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