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  2. Astrochemistry - Wikipedia

    en.wikipedia.org/wiki/Astrochemistry

    The sparseness of interstellar and interplanetary space results in some unusual chemistry, since symmetry-forbidden reactions cannot occur except on the longest of timescales. For this reason, molecules and molecular ions which are unstable on Earth can be highly abundant in space, for example the H 3 + ion.

  3. List of interstellar and circumstellar molecules - Wikipedia

    en.wikipedia.org/wiki/List_of_interstellar_and...

    The spectrum of a particular molecule is governed by the selection rules of quantum chemistry and by its molecular symmetry. Some molecules have simple spectra which are easy to identify, whilst others (even some small molecules) have extremely complex spectra with flux spread among many different lines, making them far harder to detect. [3]

  4. Atomic and molecular astrophysics - Wikipedia

    en.wikipedia.org/wiki/Atomic_and_molecular...

    These molecules have large numbers of observable transitions. Lines may also be observed in absorption—for example the highly redshifted lines seen against the gravitationally lensed quasar PKS1830-211. High energy radiation, such as ultraviolet light, can break the molecular bonds which hold atoms in molecules. In general then, molecules are ...

  5. Water molecules detected on the surface of asteroids for the ...

    www.aol.com/news/water-molecules-detected...

    Water molecules have been detected on the surface of asteroids for the first time, proving that these remnants from the formation of our solar system aren’t just dried-up space rocks.

  6. Molecules in stars - Wikipedia

    en.wikipedia.org/wiki/Molecules_in_stars

    Stellar molecules are molecules that exist or form in stars. Such formations can take place when the temperature is low enough for molecules to form – typically around 6,000 K (5,730 °C; 10,340 °F) or cooler. [1] Otherwise the stellar matter is restricted to atoms and ions in the forms of gas or – at very high temperatures – plasma.

  7. Water - Wikipedia

    en.wikipedia.org/wiki/Water

    Water is an inorganic compound with the chemical formula H 2 O.It is a transparent, tasteless, odorless, [c] and nearly colorless chemical substance.It is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent [20]).

  8. Why scientists are counting tiny marine creatures from Space

    www.aol.com/news/why-scientists-counting-tiny...

    Scientists say subtle differences in the colour of seawater will enable them to count tiny - but critically important - Antarctic marine creatures from Space. The target of the new research effort ...

  9. Space-filling model - Wikipedia

    en.wikipedia.org/wiki/Space-filling_model

    A space-filling model of n-octane, the straight chain (normal) hydrocarbon composed of 8 carbons and 18 hydrogens, formulae: CH 3 CH 2 (CH 2) 4 CH 2 CH 3 or C 8 H 18.Note, the representative shown is of a single conformational "pose" of a population of molecules, which, because of low Gibbs energy barriers to rotation about its carbon-carbon bonds (giving the carbon "chain" great flexibility ...