What astronomical object has gravity so intense that nothing can escape, often formed from the death of massive stars?

What astronomical object has gravity so intense that nothing can escape, often formed from the death of massive stars?

• A. Nebula
• B. Protostar
• C. Black Hole
• D. White Dwarf

Answer: (C)

Gravity so extreme that light cannot escape defines a black hole. It forms when a very massive star dies and its core collapses under its own gravity, compressing matter beyond a boundary called the event horizon, from which nothing can escape, not even photons. This invisible region is what makes a black hole’s interior inaccessible to direct observation, even though its presence is inferred from effects like energetic radiation from matter heated as it falls in. A nebula is just a cloud of gas and dust, sometimes a birthplace for new stars, not a collapsed remnant with trapped light. A protostar is an early stage of star formation, still gathering mass before fusion begins. A white dwarf is a dense stellar remnant supported by electron degeneracy pressure; it has strong gravity, but light can still escape, so it does not trap radiation entirely.

Gravity so extreme that light cannot escape defines a black hole. It forms when a very massive star dies and its core collapses under its own gravity, compressing matter beyond a boundary called the event horizon, from which nothing can escape, not even photons. This invisible region is what makes a black hole’s interior inaccessible to direct observation, even though its presence is inferred from effects like energetic radiation from matter heated as it falls in. A nebula is just a cloud of gas and dust, sometimes a birthplace for new stars, not a collapsed remnant with trapped light. A protostar is an early stage of star formation, still gathering mass before fusion begins. A white dwarf is a dense stellar remnant supported by electron degeneracy pressure; it has strong gravity, but light can still escape, so it does not trap radiation entirely.