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  2. Atomic and molecular astrophysics - Wikipedia

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

    Atomic astrophysics is concerned with performing atomic physics calculations that will be useful to astronomers and using atomic data to interpret astronomical observations. Atomic physics plays a key role in astrophysics as astronomers' only information about a particular object comes through the light that it emits, and this light arises ...

  3. Astrochemistry - Wikipedia

    en.wikipedia.org/wiki/Astrochemistry

    List of interstellar and circumstellar molecules; Molecular astrophysics – Field of study on atomic and molecular particles in space; Nucleocosmochronology – Technique to determine timescales for astrophysical objects and events; Recombination – Epoch c. 370,000 years after the Big Bang

  4. Molecules in stars - Wikipedia

    en.wikipedia.org/wiki/Molecules_in_stars

    The molecules in stars can be used to determine some characteristics of the star. The isotopic composition can be determined if the lines in the molecular spectrum are observed. The different masses of different isotopes cause vibration and rotation frequencies to significantly vary.

  5. Lists of songs - Wikipedia

    en.wikipedia.org/wiki/Lists_of_songs

    These are lists of songs.In music, a song is a musical composition for a voice or voices, performed by singing or alongside musical instruments. A choral or vocal song may be accompanied by musical instruments, or it may be unaccompanied, as in the case of a cappella songs.

  6. Category:Astrophysics - Wikipedia

    en.wikipedia.org/wiki/Category:Astrophysics

    Astrophysics is the branch of astronomy that deals with the physics of the universe, including the physical properties (luminosity, density, temperature, chemical composition) of astronomical objects such as stars, galaxies, and the interstellar medium, as well as their interactions.

  7. Free Music Archive - Wikipedia

    en.wikipedia.org/wiki/Free_Music_Archive

    The Free Music Archive (FMA) is an online repository of royalty-free music, currently based in the Netherlands. [1] Established in 2009 by the East Orange, New Jersey community radio station WFMU and in cooperation with fellow stations KBOO and KEXP , it aims to provide music under Creative Commons licenses that can be freely downloaded and ...

  8. Intergalactic dust - Wikipedia

    en.wikipedia.org/wiki/Intergalactic_dust

    Atomic and molecular astrophysics – Field of study on atomic and molecular particles in space; Cosmochemistry – Study of the chemical composition of matter in the universe; Extragalactic astronomy – Study of astronomical objects outside the Milky Way Galaxy; Extraterrestrial materials – Natural objects that originated in outer space

  9. Elephant trunk (astronomy) - Wikipedia

    en.wikipedia.org/wiki/Elephant_trunk_(astronomy)

    Elephant trunks (more formally, cold molecular pillars [1]) are a type of interstellar matter formations found in molecular clouds. They are located in the neighborhood of massive O type and B type stars , which, through their intense radiation, can create expanding regions of ionized gas known as H II regions .