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Share New Delhi: A scientist has estimated the three-dimensional distribution of molecular and atomic hydrogen in a nearby galaxy which can help lead to clues to the star formation processes and the evolution of the galaxy. Galaxies like the one we reside in, the Milky Way, consist of discs containing stars, molecular and atomic hydrogen, and helium. The molecular hydrogen gas collapses on itself in distinct pockets, forming stars, its temperature was found to be low –close to 10 kelvin, or -263 ºC and thickness is about 60 to 240 light-years. The atomic hydrogen extends both above and below the discs. However, more sensitive observations in the past two decades have surprised astronomers. They have estimated that molecular hydrogen extends farther from the disc in both directions, up to about 3000 light-years. This gaseous component is warmer than the one straddling the disc and has comparatively lesser densities, thus escaping earlier observations. They called it the ‘diffu

New delhiNarendra nath patraMonthly notices of the royal astronomical societyDepartment of scienceRaman research instituteMilky wayMonthly noticesRoyal astronomicalபுதியது டெல்ஹிமாதாந்திர அறிவிப்புகள் ஆஃப் தி அரச வானியல் சமூகம்துறை ஆஃப் அறிவியல்ராமன் ஆராய்ச்சி நிறுவனம்பால் வழிமாதாந்திர அறிவிப்புகள்அரச வானியல்