nebula articles
How does a star go from a red giant to a planetary nebula?
The journey of a Sun-like star from its expansive, aging phase as a red giant to the ephemeral beauty of a planetary neb...
What was John Herschel known for?
Sir John Herschel was a figure whose breadth of scientific inquiry spanned the heavens and the nascent world of chemical...
When did Immanuel Kant propose the nebular hypothesis?
The proposition of how our solar system actually came to be has occupied thinkers for centuries, often sitting at the in...
Who first discovered the nebula?
The moment a fuzzy patch of light in the night sky was recognized as something *other* than a comet, a star cluster, or ...
What do stars start out as?
The light we see from distant suns is the product of an incredible, slow-motion demolition and construction project orch...
What causes the bright colors in an emission nebula?
The vibrant, cloud-like structures of an emission nebula present some of the most breathtaking sights in the night sky, ...
How does a nebula form a main sequence star?
The story of a star is one of an epic, slow-motion transformation, beginning in the cold, dark reaches of space within m...
What do you need to form a star?
The genesis of a star begins not with a flash, but with an immense, cold accumulation of material scattered across the i...
Who first discovered the nebulae?
The initial observation of the faint, hazy patches in the night sky that we now call nebulae is not attributable to a si...