New superhighway system discovered in the Solar System — ScienceDaily

https://www.sciencedaily.com/releases/2020/12/201209094216.htm

A thing we could use more around here on The Science Probe is audience partipation. A friend of mine named “Gisiom” sent me a link to this article because as far as travel in our own Solar System can take months and years to transverse. Space is HUGE! Much gratitude to my friend for sharing.

Date: December 9, 2020

Source:
University of California – San Diego

Summary:
Researchers have discovered a new superhighway network to travel through the Solar System much faster than was previously possible. Such routes can drive comets and asteroids near Jupiter to Neptune’s distance in under a decade and to 100 astronomical units in less than a century. They could be used to send spacecraft to the far reaches of our planetary system relatively fast, and to monitor and understand near-Earth objects that might collide with our planet.

Stylized illustration of Solar System (stock image).
Credit: © Mopic / stock.adobe.com

Researchers have discovered a new superhighway network to travel through the Solar System much faster than was previously possible. Such routes can drive comets and asteroids near Jupiter to Neptune’s distance in under a decade and to 100 astronomical units in less than a century. They could be used to send spacecraft to the far reaches of our planetary system relatively fast, and to monitor and understand near-Earth objects that might collide with our planet.


Description

Superhighway network to travel through the Solar System much faster than was previously possible. Such routes can drive comets and asteroids near Jupiter to Neptune’s distance in under a decade and to 100 astronomical units in less than a century. Accordingly, they could be used to send spacecraft to the far reaches of our planetary system relatively fast, and to monitor and understand near-Earth objects that might collide with our planet. This video shows the global arch-like

structure of space manifolds in the Solar System. The map shows the region between the outer edge of the main asteroid belt at 3 AU to just beyond the semi-major axis of Uranus at 20 AU. Orbits located on stable manifolds appear in a lighter color.

In their paper, published in the Nov. 25 issue of Science Advances, the researchers observed the dynamical structure of these routes, forming a connected series of arches inside what’s known as space manifolds that extend from the asteroid belt to Uranus and beyond. This newly discovered “celestial autobahn” or “celestial highway” acts over several decades, as opposed to the hundreds of thousands or millions of years that usually characterize Solar System dynamics.

The most conspicuous arch structures are linked to Jupiter and the strong gravitational forces it exerts. The population of Jupiter-family comets (comets having orbital periods of 20 years) as well as small-size solar system bodies known as Centaurs, are controlled by such manifolds on unprecedented time scales. Some of these bodies will end up colliding with Jupiter or being ejected from the Solar System.

The structures were resolved by gathering numerical data about millions of orbits in our Solar System and computing how these orbits fit within already-known space manifolds. The results need to be studied further, both to determine how they could be used by spacecraft, or how such manifolds behave in the vicinity of the Earth, controlling the asteroid and meteorite encounters, as well as the growing population of artificial human-made objects in the Earth-Moon system.

Christmas Star 2020: How to view ‘great conjunction’ in Houston

The shortest day/longest night of the year is here for the people of Southern California, which would mean, usually, a trek up to Griffith Observatory for local astro-aficionados.

But the hill-topping titan of cosmic knowledge is currently closed, at least temporarily, a pandemic safety measure. Which means that keeping our eye on the heavens, from our own home base, is the way to go as 2020 makes its exit.

There is a nifty route, however, to finding more information on the winter solstice, and the big show that’s a go on the evening of Dec. 21: The Great Conjunction of Jupiter and Saturn.

How it Works.

By keeping taps on Griffith Observatory’s Sky Report, a free and info-rich summary of what Southern Californians can expect to see after the sun goes down, if they should step outside and look up.

Planetarium engineer David Nakamato has kindly provided what you need to know for the “meet-up” between the Solar System’s sizable superstars in the December Sky Report.

“On the evening of December 21st, the separation between Jupiter and Saturn reduces to one-tenth of a degree, one-fifth the width of the full moon. They have not been this close since 1623!”

Saturn Jupiter and the four Galilean moons, Io, Europa, Ganymede and Callisto.
Just look at how close Saturn and Jupiter were on Saturday night:
And on Sunday the 20th

“A telescope will show a wonderful sight, with details on both planets visible with suitable magnification. This is the only evening when they’ll be this close. The Moon can’t help in locating them; it’s too far to the east,” shared Mr. Nakamato.

As for seeing the gibbous moon in the vicinity of the Red Planet? That will be a sight to see on the evening of Christmas.

If you’re missing solstice-cool talks at the observatory, those free and informative talks that happen twice in a day whenever a new season begins, the online Sky Report will help keep you connected to the 85-year-old landmark.

A landmark that is physically closed, yes, but still has an eye on the sky, all to help local astronomy buffs catch the coolest stuff happening in this neck of the cosmos.

And this is how it looks from outer space.