Search results for asteroid belt

Astronomy Jan 28, 2021

What did the solar system look like before all the planets migrated?

Early planetary migration in the solar system has been long established, and there are myriad theories that have been put forward to explain where the planets were coming from. Theories such as the Grand Tack Hypothesis an ...

Space Exploration Jan 20, 2021

Physicist proposes human-populated mega-satellite orbiting Ceres

Physicist Pekka Janhunen with the Finnish Meteorological Institute has developed a novel idea to colonize a place other than the Earth—and it is not the moon or Mars. Instead, Janhunen is suggesting in a paper posted on ...

Astronomy Jan 12, 2021

Reconstructing the solar system's original architecture

As the solar system was developing, the giant planets (Jupiter and Saturn) formed very early, and as they grew, they migrated both closer to and further away from the sun to stay in gravitationally stable orbits.

Astronomy Dec 21, 2020

Study finds meteoric evidence for a previously unknown asteroid

A Southwest Research Institute-led team of scientists has identified a potentially new meteorite parent asteroid by studying a small shard of a meteorite that arrived on Earth a dozen years ago. The composition of a piece ...

General Physics Dec 9, 2020

Accessing the arches of chaos in the solar system for fast transport

Space manifolds form the boundaries of dynamic channels to provide fast transport to the innermost and outermost reaches of the solar system. Such features are an important element in spacecraft navigation and mission design, ...

Space Exploration Dec 7, 2020

Asteroid Ryugu dust delivered to Earth; NASA astrobiologists prepare to probe it

On Dec. 6 local time (Dec. 5 in the United States), Japanese spacecraft Hayabusa2 dropped a capsule to the ground of the Australian Outback from about 120 miles (or 200 kilometers) above Earth's surface. Inside that capsule ...

Astronomy Dec 4, 2020

Researchers uncover key clues about the solar system's history

In a new paper published in the journal Nature Communications Earth and Environment, researchers at the University of Rochester were able to use magnetism to determine, for the first time, when carbonaceous chondrite asteroids—asteroids ...

Astronomy Nov 30, 2020

Fast-moving gas flowing away from young star caused by icy comet vaporisation

A unique stage of planetary system evolution has been imaged by astronomers, showing fast-moving carbon monoxide gas flowing away from a star system over 400 light years away, a discovery that provides an opportunity to study ...

Astronomy Nov 3, 2020

Mars plays shepherd to our moon's long-lost twin, scientists find

An international team of planetary scientists led by astronomers at AOP have found an asteroid trailing behind Mars with a composition very similar to the moon's. The asteroid could be an ancient piece of debris, dating back ...

Astronomy Nov 3, 2020

How did the Earth get its water? The answer might be found on Mercury

I don't know if you've noticed by now, but the Earth is a little bit wet. How Earth got all its water is one of the major mysteries in the formation of the solar system, and a team of Japanese researchers have just uncovered ...

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