Comets, those icy and
rocky bodies with the spectacular long tails of gas and dust, are common in our Solar System, with several thousand having been discovered so far.
Not exact matches
Some of my clients innocently entered into the world of dieting, only to find themselves years and years later,
with a continually confusing and
rocky relationship
with both food and their
bodies.
These
bodies, along
with Pluto, are members of the Kuiper Belt, a population of
rocky potential comets orbiting beyond Neptune.
Until recently, that rule led scientists to think only in terms of places just like home: temperate,
rocky planets
with bodies of liquid water on their surfaces.
With a diameter of about 1,215 km, the France - sized moon is one of largest known objects in the Kuiper Belt, the region of icy,
rocky bodies beyond Neptune.
The presence of this rock at a site indicates either that material has pushed up through Earth's crust from the mantle (a silicate
rocky shell between the crust and the core
with an average thickness of 2,886 km and depths ranging from 30 km to almost 3,000 km below the crust) or that a celestial
body (a comet, meteor or meteorite) fell there.
The
rocky body — the largest yet to get a close flyby — seems to have been just large enough to avoid being reduced to a flying pile of rubble by eons of collisions
with other asteroids.
They modelled more complex
bodies than have been tried before: rather than just a homogeneous ball, they included more realistic objects
with a hard,
rocky core surrounded by an icy mantle.
Researchers haven't yet confirmed the idea, but further studies should produce new clues about the composition and behavior of these tiny
rocky bodies — information that someday could help prevent a catastrophic collision
with Earth.
This is the first time a white dwarf
with nitrogen has been discovered, and one of only a few known examples of white dwarfs that have been impacted by a
rocky body that was rich in water ice.
In 2006,
with the discovery of several other
rocky bodies similar in size or larger than Pluto, the IAU decided to re-classify Pluto as a dwarf planet.
tectonic Surface activity on a large
rocky body (such as a planet or moon) as liquid rock flows up to the surface where it solidifies, then slowly drifts atop molten rock, carrying surface features
with it.
Ceres is a partially differentiated
body,
with a
rocky core overlaid by a volatile - rich shell.»
In addition to
rocky asteroids and icier
bodies further out from the Sun, many agglomerated into larger planetesimals that eventually collided to form planets like the Earth, and more than 250 minerals, including olivine and zircon, developed within the planetesimals
with the help of melting, collisional shocks, and reactions
with water.
In between, we get a mopey subplot about Ben Grimm dealing
with his new
rocky body.
All things considered I'd rather deal
with the small
rocky bodies heading towards earth.
Fairy basslets,
with purple heads and bright orange
bodies, dangle from beneath overhangs and
rocky outcroppings.
In each montage the artist's photograph of a
rocky and savage coastal landscape is partially overlaid and merged
with enlarged images of cells from her own
body.