Source articles
Where does the light of a star come from?
The light reaching us from the distant cosmos, the very illumination that defines the night sky, originates from an asto...
What is the source of light in the emission nebula?
The radiant glow observed in an emission nebula stems from a fascinating, three-step cosmic process involving intense st...
Where does NASA get its hydrogen?
The sheer scale of space exploration demands resources that few other industries can match, and perhaps none is as funda...
What is the source of energy as a star evolves from an interstellar cloud to the protostar stage?
The process by which a star is born begins in the cold, dark reaches of space, originating from vast reservoirs of mater...
What is one of the primary sources of space debris?
The accumulation of defunct human-made objects orbiting our planet represents an escalating hazard to every active satel...