solar system tagged posts

New Superhighway System discovered in the Solar System

Maps of the superhighway between the outer edge of the main asteroid belt at 3 AU – that is three times the distance between the Sun and thee Earth – to just beyond Uranus at 20 AU

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.

In their paper, published in the Nov...

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Solar System Formed in Less than 200,000 Years

solar system formation
Artist’s conception of the dust and gas surrounding a newly formed planetary system. Image courtesy of NASA

A long time ago—roughly 4.5 billion years—our sun and solar system formed over the short time span of 200,000 years. That is the conclusion of a group of Lawrence Livermore National Laboratory (LLNL) scientists after looking at isotopes of the element molybdenum found on meteorites.

The material that makes up the sun and the rest of the solar system came from the collapse of a large cloud of gas and dust about 4.5 billion years ago...

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The Collective Power of the Solar System’s Dark, Icy Bodies

Image:
Scientists have long struggled to explain the existence of the solar system’s “detached objects,” which have orbits that tilt like seesaws and often cluster in one part of the night sky. (Credit: Steven Burrows/JILA)

Two new studies by researchers at the University of Colorado Boulder may help to solve one of the biggest mysteries about the dark, icy bodies of the outer solar system: why so many of them don’t circle the sun the way they should.

The outermost reaches of our solar system are a strange place – filled with dark and icy bodies with nicknames like Sedna, Biden and The Goblin, each of which span several hundred miles across.

The orbits of these planetary oddities, which scientists call “detached objects,” tilt and buckle out of the plane of the solar system, amon...

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How the Solar System got its ‘Great Divide,’ and why it matters for Life on Earth

An orrery, a type of device once used to track the movements of the planets, sitting above an infrared image of a hypothetical "protoplanetary" disk that may have divided the solar system early in its history.
An orrery, a type of device once used to track the movements of the planets, sitting above an infrared image of a hypothetical “protoplanetary” disk that may have divided the solar system early in its history. (Credit: K. Ebert/Innovative Ideas & Methods)

Scientists, including those from the University of Colorado Boulder, have finally scaled the solar system’s equivalent of the Rocky Mountain range. In a study published in Nature Astronomy, researchers from the United States and Japan unveil the possible origins of our cosmic neighborhood’s “Great Divide.” This well-known schism may have separated the solar system just after the sun first formed.

The phenomenon is a bit like how the Rocky Mountains divide North America into east and west...

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