Are Some or All Comets Pieces of an Exploded Planet?

The Pebble comet

Is nomenclature important in astronomy and cosmology?

Not to some scientists and science writers.

Sometimes it seems like it never has been important (Modern Evolutionary Synthesis).

The word "pebble" was recently used to describe what a comet was made of.

Regular readers know that Dredd Blog follows science stories as a continuing study of the Exploded Planet Hypothesis (EPH) or Exploded Planet Theory (see Weekend Rebel Science Excursion - 40, Exploded Planet Hypothesis, Weekend Rebel Science Excursion, Weekend Rebel Science Excursion - 11).

So, the use of the word "pebble" to describe what a comet was made of caught my eye:

During its brief mission, Philae collected some key data, including images that show the entire comet may be made of pebbles, scientists said at the Lunar and Planetary Science Conference in Houston this week.

If confirmed, scientists will have to rethink how pebbles as big as some seen on 67P could form so far from the sun.

(Comet Made of Pebbles, emphasis added). My recollection of the meaning of "pebble" created images of the banks of beautiful streams and even some beaches.

So, I took another look at the definition of the word:

Definition of pebble in English:

noun

A small stone made smooth and round by the action of water or sand.

Example sentences:

We had sediments, river mud, pebbles rounded by water action, even the remains of aquatic plants on the site.

It's a lovely place and we walked across stepping stones and skimmed pebbles in the river.

They consist of particulate rocks that vary in size from sand to pebbles and cobbles.

(Oxford Dictionary, emphasis added, cf. pebble). This is the type of situation found repeatedly by our spacecraft.

Regular readers know that the Dredd Blog hypothesis, which is an extension of the EPH, is that one or more planets were destroyed and or damaged when the attempt to establish a Dyson Grid or Sphere failed:

Is the act of contemplating life on other planets in the universe a "scientific" thing to do?

At least in the sense of wondering how they might approach the issue of clean sources of energy compared with the other side of that coin, the many pollution generating sources of energy?

Or is such contemplation an activity properly left to mystics, UFO folk, and others of that "unscientific" ilk?

In prior posts we have mentioned the contemplations of scientist Freeman Dyson, who wondered how civilizations on other planets, if they exist, would deal with the energy crisis our existing civilization faces.

If scientists like Freeman Dyson professionally contemplate, and even go so far as to predict forms of alien energy systems, such as the "bubble" shown in the photo above, then the contemplation of extraterrestrial potential is by definition scientific ...

(Exploded Planet Hypothesis). We are constantly discovering new evidence of "bombardment" from asteroids and meteorites that have damaged all planets that we observe in our solar system.

And, that our solar system seems to be missing some planets (World's largest asteroid impacts (~300-600 mya) found in central Australia, Is Jupiter a Planet Destroyer?).

Further, some of the planets (including Earth) may now be missing life forms which they once had (Nitrogen / Nitrates on Mars) before one or more planets were destroyed by explosions that sent damaging debris throughout the entire solar system (e.g. craters, asteroids, moons in retrograde orbits, reverse rotation of Venus, strata on asteroids, etc.).

Thus, we can remain scientific as we speculate about whether the comet with pebbles and sand all over it is a chunk of the remains of a river bed, or part of a pebble strewn beach.

Once part of an ancient planet that was somehow destroyed in an accident of monumental proportions.