The findings challenge the conventional view, in which collisions between smaller building blocks cause them to stick together and, over time, repeated collisions accrete new material to the growing baby planet.
Instead, the authors propose and demonstrate evidence for a novel "hit-and-run-return" scenario, in which pre-planetary bodies spent a good part of their journey through the inner solar system crashing into and ricocheting off of each other, before running into each other again at a later time.
Hail-like "Mushballs" May Fall on All Our Giant Planets - Sky &
“Mushballs,” first inferred to exist on Jupiter, may fall within the atmospheres of all the solar system’s giant planets.
Icy, ammonia-rich " mushballs " may plunge deep below the cloud bank in Jupiter's atmosphere. Now, a planetary scientist suggests this scenario might explain the surprisingly low levels of ammonia detected on Uranus and Neptune, too.
Myth Debunked: The planets' appearance through a telescope
Observing the planets through a telescope might seem like a repetitive task to undertake.
However, observing planets on different nights throughout the year reveals a changing view of our planetary neighbours.
Mars also experiences global dust storms over extended periods of time, clouding most of our views of its surface features.
NASA's Webb to Explore Forming Planetary Systems | NASA
New cereal box-sized satellite to explore alien planets
But it has mighty goals: Over the course of about 7 months, the mission will track the volatile physics around a class of extremely hot planets orbiting stars far away from Earth.
"It's an experiment that NASA is conducting to see how much science can be done with a small satellite," said France, professor in the Department of Astrophysical and Planetary Sciences. "That's exciting but also a little daunting."
Goss: The most isolated planet is not so lonely | Local News | roanoke.com
We often recite the names of the planets with confidence as if they were neatly lined in a row, one placed directly next to its neighbor. Outward from the fiery sun first comes little Mercury, then brilliant Venus, then Earth and red Mars.
Venus shines conspicuously low in the west shortly after sunset. It won't rise much higher before it drops quickly towards the set sun as late December approaches.
Planets in our solar system orbit on the same plane, but why? | TweakTown
An astronomer has explained why all of the planets in our solar system are roughly sitting on the same orbital plane.
Haghighipour said, " a disk around the star [that] becomes flatter and flatter and expands and expands with the sun at the center. "
As millions and millions of years went by, the disc became flat, which is known as a protoplanetary disc. And all of the particles in this disc orbiting the young star continued to smash into each other, eventually forming the first grains of dust, then pebbles, then rocks, and eventually planets.
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