Like other comets of its type, PANSTARRS is thought to have originated in the Oort Cloud, a vast region containing millions of comets located more than two light years from the Sun.
Not exact matches
Just think about the size of the
comet that would have to create something
like that, not to mention all the
other consequences that would arise from a massive impact of that nature (namely destruction of almost all life on earth except for deep, deep sea creatures).
That interpretation left many details unclear, though, including how
comets like ISON got tossed all the way out to the Oort Cloud while
others were sent crashing into Earth.
Evidence for such an origin might be bolstered if scientists find signs of
other materials known to be present in
comets,
like carbon - based compounds called organics.
With the help of the NASA / ESA Hubble Space Telescope, a German - led group of astronomers have observed the intriguing characteristics of an unusual type of object in the asteroid belt between Mars and Jupiter: two asteroids orbiting each
other and exhibiting
comet -
like features, including a bright coma and a long tail.
The orbit calculations revealed beyond any doubt that this body did not originate from inside the Solar System,
like all
other asteroids or
comets ever observed, but instead had come from interstellar space.
Others orbit their stars backwards, have strange and unexpected compositions, are puffed up
like marshmallows, or shed tails
like comets.
You've done these vulcanoid surveys and studies of
other asteroids, meteors, and
comets from the backseat of a high - performance aircraft,
like a WB - 57 or a F / A -18 Hornet fighter jet.
Comets,
like meteorites, are known to carry water and
other volatiles, but most
comets formed in the far reaches of the solar system in a formation called the Oort Cloud.
Hal Weaver of the Johns Hopkins University Applied Physics Laboratory, who collaborates with Stern on New Horizons, goes the
other way and speaks of Pluto being «in some respects
like a giant
comet.»
The collection was compiled by renowned French astronomer Charles Messier to help colleagues differentiate wandering
comets from
other objects,
like nebulae.
Soon
other substances, including water vapor, will begin pouring out, revealing their presence in the spectrum of light from the
comet to instruments on the ground and those,
like Spitzer, in space.
Tim Spahr directs the Minor Planet Center, the global clearinghouse for all information about asteroids,
comets and
other relatively small bodies
like moons.
American - born, Paris - based Cruces takes up the Belgian gallery's project room for Sift, his eleventh solo show, and gives little away as to its nature
other than a press release that comes in the form of ten random T / F statements, presenting maybe - facts
like «All water on Earth originated purely from
comets.